EP2632698A1 - Procédé de fabrication de corps moulés creux en plastique renforcés par des fibres continues comprenant une matrice en plastique thermoplastique - Google Patents

Procédé de fabrication de corps moulés creux en plastique renforcés par des fibres continues comprenant une matrice en plastique thermoplastique

Info

Publication number
EP2632698A1
EP2632698A1 EP11773413.7A EP11773413A EP2632698A1 EP 2632698 A1 EP2632698 A1 EP 2632698A1 EP 11773413 A EP11773413 A EP 11773413A EP 2632698 A1 EP2632698 A1 EP 2632698A1
Authority
EP
European Patent Office
Prior art keywords
plastic
hollow
molded body
profile
fibers
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Withdrawn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
EP11773413.7A
Other languages
German (de)
English (en)
Inventor
Mustafa Yildirim
Hans-Joachim Ludwig
Peter Michel
Bettina Wendel
Andreas LÖFFLER
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
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 Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP2632698A1 publication Critical patent/EP2632698A1/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Withdrawn legal-status Critical Current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
    • B29C70/40—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
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • 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
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof

Definitions

  • the present invention relates to a process for the production of continuous-fiber-reinforced plastic hollow molded articles with a thermoplastic polymer matrix and to a plastic hollow molded article produced by the process and to a motor vehicle having a plastic hollow molded article according to the invention.
  • the publication DE 603 01 358 T2 discloses a support member for shock absorption for a vehicle, wherein the component comprises a rod-shaped profile, which has a C-shaped profile in a vertical sectional plane parallel to the direction of travel of the vehicle provided with the component, which on its rear surface is open.
  • the component can be made of composite plastic by molding, pressing or spraying. Use finds thermoplastic material, which by fibers, such as glass fibers or
  • Carbon fibers can be reinforced.
  • a disadvantage of this known prior art is that an open C-profile with respect to a closed profile with respect to the resistance torque against bending by a factor of 3 has lower values.
  • the document EP 0 937 611 A1 discloses a bending beam, which is formed by a closed profile.
  • the profile is composed here of two half-shells, which are connected to each other by means of protruding flanges to the closed profile. Due to the additional joining step, the profile is very costly to manufacture and also has an increased weight due to the formed flanges.
  • the invention is therefore based on the object to provide a method which allows a fast and cost-effective production of a mechanically highly resilient, continuous fiber reinforced plastic hollow shaped article.
  • the object is achieved according to the invention by a process for the production of continuous-fiber-reinforced hollow plastic molded articles with a thermoplastic polymer matrix comprising the following steps: provision of a dimensionally stable, endless fiber-reinforced hollow plastic profile,
  • the shaping of the plastic hollow shaped body takes place.
  • a plastic hollow body can be produced.
  • simple shaping operations eg bending
  • the internal pressure can correspond to the surrounding atmospheric pressure - and as a result a sealing element can be dispensed with.
  • the method according to the invention enables a simplified handling of the plastic hollow profile.
  • the plastic hollow profile can be closed at the end by at least one sealing element and filled with an incompressible medium via the sealing element or before the sealing element is applied.
  • incompressible media For example, oils or particulate solids such as sands or salts in question.
  • the incompressible media are preferably designed so that they can easily be removed again after the plastic hollow molded article has been formed.
  • the cross-sectional geometry of the plastic hollow profile is thereby at least substantially changed but not increased or decreased.
  • the internal pressurization may also be via a liquid medium such as an oil or also by water or a filling gas (e.g., air).
  • the shape of the plastic hollow molding within the mold can be realized in an advantageous manner an adaptation of the geometry of the plastic hollow profile or the plastic hollow molding to the space available in the vehicle space. As a result, optimal utilization of the available space is guaranteed.
  • the plastic hollow profile may have a constant cross-sectional geometry and / or a constant outer circumference in the longitudinal direction.
  • a plastic hollow profile may be formed in particular as a plastic tube with a circular or rectangular or triangular or polygonal geometry.
  • Such hollow plastic profiles can be produced in a simple manner in a continuous process.
  • the plastic hollow profile may have longitudinally varying cross-sectional geometries and / or varying outer circumferences.
  • the use of a plastic hollow profile with a longitudinally varying cross-sectional geometry and / or varying outer circumference has the advantage that a near-net wall thickness and / or outer geometry can already be predetermined in the plastic hollow profile, so that only in the mold, which defines the final contour of the plastic hollow shaped body marginal flow processes of the thermoplastic resin matrix of the plastic hollow profile occur. Thus, local fiber shifts or fiber breaks and component distortions can be minimized or eliminated.
  • At least one end-side portion of the plastic hollow shaped body can be formed as a connecting element to a further plastic hollow shaped body.
  • an end-side section of the hollow plastic molding can be shaped such that it forms a connecting element to form a further plastic hollow molding.
  • the rigidity level of the overall arrangement of the interconnected plastic hollow moldings can be flexibly adjusted and adjusted.
  • Another alternative is to form the plastic hollow molded article according to the invention on its outer wall in an injection molding process plastic ribs to further increase its rigidity.
  • the plastic material which forms the plastic ribs has a compatibility with the thermoplastic polymer matrix of the plastic hollow shaped body.
  • the sealing element can be permanently connected to the plastic hollow shaped body and act as a connecting element to a further plastic hollow shaped article.
  • the sealing element may in particular remain within the hollow plastic molding and function as a connecting element to a further plastic hollow molding.
  • the sealing elements already have
  • Screw connections or other connection elements for the supply of fluid media which in the event that the sealing element remains pers pers within the Kunststoffhohlformkör-, can also act as a connecting element to another plastic hollow shaped article or can be used.
  • the compound of the plastic hollow molded body with each other can be done by means of well-known joining elements, such as screws or bolts, or by material joining methods such as gluing, soldering or welding or by means of positive or positive joining methods.
  • the heating of the plastic hollow profile can be effected by means of convection heating and / or by means of laser radiation and / or by means of infrared light radiation and / or by means of induction heating and / or by means of a plasma source and / or by means of microwave radiation.
  • the reinforcing fibers can be obtained by mineral fibers, in particular glass fibers or basalt fibers and / or by carbon fibers and / or by aramid fibers and / or by polymeric fibers and / or by synthetic fibers and / or by fibers of renewable raw materials (eg hemp fibers) and / or Metal fibers are formed.
  • an induction source such as, for example, an induction coil can advantageously be used for heating the hollow plastic profile.
  • the thermoplastic polymer matrix may be polyamide (PA) and / or polypropylene (PP) and / or acrylonitrile-butadiene-styrene (ABS) and / or polyethylene (PE) and / or crosslinked polyethylene (PE-X) and / or thermoplastic polyurethanes (TPE ) and or
  • PBT Polybutylene terephthalate
  • PES polyphenylene sulfide
  • PET Polyethylene terephthalate
  • Crash management systems in motor vehicles be designed as a structural component of a motor vehicle body system, as a component of an opening of the vehicle closing flap or door or generally as a motor vehicle structural component or as an aircraft structural component.
  • the hollow plastic molding according to the invention is particularly suitable as a component for crash management systems in motor vehicles, as a structural component of a motor vehicle body system as a component of an opening of the vehicle closing flap or door, or generally as a motor vehicle or commercial vehicle structural component. Due to its low weight or the low density of the materials used, the hollow plastic molded body can also be designed as an aircraft structural component.
  • An endless-fiber-reinforced plastic hollow shaped article in particular produced by a method according to one of claims 1 to 9, or a hollow plastic molded article according to claim 10, can have at least one end-side section which is designed as a connecting element to a further plastic hollow molded article.
  • a connecting element on at least one end-side portion of the plastic hollow shaped body can advantageously be connected to one another or a plurality of other plastic hollow moldings with each other and are thus adapted specifically to the required level of rigidity.
  • Part of the invention is further a motor vehicle with an endless fiber reinforced plastic hollow molding, in particular according to one of claims 10 or 11, wherein at least one electrical line and / or at least one media line and / or at least one data transmission line and / or at least one control line of the motor vehicle within the plastic hollow molding is guided.
  • the space available through the hollow cross-sectional geometry within the plastic hollow molded body is advantageously utilized, for example in order to produce e.g. To store and / or carry out cable harnesses or fiber optic cables or media lines (for example for wiping liquids or fuels) in a space-saving manner and protected against environmental influences.
  • the electrical lines and / or media lines and / or data transmission lines and / or control lines can be easily replaced in the event of a defect.
  • FIGS. 1 and 2 schematically show a process according to the invention for the production of continuous-fiber-reinforced plastic hollow molded bodies 1 with a thermoplastic polymer matrix 4.
  • a dimensionally stable, continuous fiber reinforced hollow plastic profile 2 is provided.
  • the plastic hollow profile 2 in the longitudinal direction of a constant cross-sectional geometry Q and a constant outer circumference.
  • the circular geometry Q of the plastic hollow shaped body 1 is also shown as a section.
  • the reinforcing fibers 3 of the hollow plastic profile 2 are surrounded by a thermoplastic polymer matrix 4.
  • the thermoplastic resin matrix 4 is formed in this embodiment by polyamide.
  • thermoplastic matrix 4 may alternatively polypropylene and / or acrylonitrile-butadiene-styrene and / or polyethylene and / or crosslinked polyethylene and / or thermoplastic polyurethanes and / or
  • the reinforcing fibers 3 may be reinforced by mineral fibers, in particular glass fibers or basalt fibers, and / or by carbon fibers and / or by aramid fibers and / or by polymeric fibers and / or by synthetic fibers and / or by fibers of renewable raw materials (eg hemp fibers) and / or by Metallfasem be formed.
  • the plastic hoof profile 2 is heated by means of convection heating 21 up to or above the softening temperature of the thermoplastic polymer matrix 4 of the hollow plastic profile 2.
  • the heating of the hollow plastic profile by means of laser radiation and / or by means of infrared light radiation and / or by means of induction heating and / or by means of a plasma source and / or by means of microwave radiation.
  • the end-side openings 5, 6 of the plastic hollow profile 2 are closed by means of at least one sealing element 7, 8.
  • the introduction of the hollow plastic profile 2 takes place in a shape of the plastic hollow molded body 1 defining mold 9.
  • the mold is shown schematically in Figure 2.
  • an internal pressure is applied via the sealing elements 7, 8 in order to press the plastic hip profile 2 against the inner walls 10 of the closed molding tool 9.
  • a fluid 23 (eg air or an oil) is introduced under elevated pressure via passages in the sealing elements 7, 8.
  • a fluid 23 eg air or an oil
  • the method can be maintained by introducing an incompressible medium in the Kunststoffhohiprofil 2 via the sealing elements 7, 8, an internal pressure within the hollow plastic profile 2 to push the Kunststoffhohiprofil 2 against the inner walls 10 of the closing mold 9 or to squeeze.
  • the internal pressure may correspond to the surrounding atmospheric pressure - and consequently a sealing element 7, 8 may be dispensed with.
  • the shaping of the plastic hollow shaped body 1 takes place in all cases. In FIG.
  • the hollow plastic molded body 1 may in particular comprise beads, which are preferably formed only locally in the plastic hollow molding.
  • FIG. 3 shows a plurality of plastic hollow shaped bodies 1 produced in the process according to the invention.
  • the hollow plastic molded bodies 1 are at least regionally
  • FIG. 3 shows, analogously to FIG. 1, a hollow plastic profile 2 introduced into a heating furnace 20, which is closed at the end by sealing elements 7, 8.
  • the heating of the hollow plastic profile 2 up to or above the softening temperature of the thermoplastic resin matrix 4 of the hollow plastic profile 2 also takes place by means of a Konvek- tion heating 21.
  • the heating of the plastic hollow profile by means of laser radiation and / or by means of infrared light radiation and / or by means of induction heating and / or by means of a plasma source and / or by means of microwave radiation.
  • the plastic hollow profile 2 has varying cross-sectional geometries and varying outer circumferences in the longitudinal direction. In an advantageous manner, the plastic hollow profile 2 already forms or gives a rough contour of the plastic to be produced, ie, the molded body 1.
  • FIG. 7 shows an endless-fiber-reinforced plastic hollow shaped body 1, which is designed as a component of a flap 31 or door 31 closing an opening of a motor vehicle.
  • an electrical line 15 and a control line 18 is guided within the hollow plastic molded body 1.
  • the electrical line 15 and the control line 18 enter in the region of the flap suspension 32 through an opening in the Kunststoffhohlformkör- 1 and are guided within the plastic hollow molded body 1 to a region 33, which schematically illustrated an electrically actuated door lock or a license plate light or a Parking sensor or a light source or a rear view camera forms.
  • Another electrical line 5 supplies the third brake light 34 with electrical energy.
  • An electrical line 15 and a media line 16 are also of coming from the flap suspension 32, guided within the plastic hollow molding 1 and supply a windscreen cleaning system 35 with electrical energy and with a washing liquid.
  • the flap 31 has in the assembled state on the visible side a veneer 36, as well as a window opening 35.
  • FIG. 8 shows a plastic hollow shaped body 1 designed as a bending carrier, which is connected via two impact absorbers 41 to the bodywork of a motor vehicle, not shown here.
  • media lines 16 for supplying a headlight cleaning system 42, and a data transmission line 17 and a control line 18, which connects the on-board electronics with a front camera 43, out.
  • the bending beam is visible in the mounting state of a
  • FIG. 9 shows a hollow plastic molded article 1 according to the invention which has an end-side section 11, which as a connecting element 12 leads to another
  • the first hollow plastic molded body 1 has an inner diameter and inner cross-section complementary to the further hollow plastic molded body 13, which are matched to one another in such a way that the further hollow plastic molded body 13 can be inserted into the first plastic hollow molded body 1.
  • the inner diameter and the inner geometry of the first hollow plastic molded body 1 is adapted to the outer geometry and the outer circumference of a portion 51 of the second plastic hollow molded body 13. The insertion of the second plastic hollow molded body 13 into the first hollow plastic molded body 1 shown in FIGS. 9b to 9d creates a positive connection between the first plastic hollow molded body 1 and the second plastic hollow molded article 13.
  • a fixing element 52 can be provided between the two end sections 1, 51 be provided of the first plastic hollow shaped body 1 and the second plastic hollow shaped body 13.
  • the fixing element 52 is formed by an expanding plastic foam.
  • the fixing element 52 may be formed by an adhesive layer or a sealing compound or from plastic, metal or ceramic.
  • FIG. 10a shows in FIG. 10a first the closing of an end-side opening 5 of a plastic hollow profile 2 by means of at least one sealing element 7.
  • the sealing element 7 is pressed with the plastic hollow shaped body 1, so that the sealing element 7 within the plastic hollow shaped body 1 remains and as a connecting element 14 to another Plastic hollow body 13 can act.
  • the sealing element 7 is not inserted into the hollow plastic profile 2 and pressed, but is plugged and pressed from the outside on the plastic hollow section 2.
  • gluing of the sealing element 7 with the plastic hollow profile 2 can also take place instead of pressing.
  • connection of the sealing element 7 with the second plastic hollow molded body 13 can be made via a material connection, such as a bond, but also by a positive or non-positive connection, such as screws or clamps.
  • the second plastic hollow molded body 13 has a sealing element serving as a connecting element, which has a complementary Fügelement (eg a screw thread) to the sealing element 7 or connecting element 14 of the first plastic hollow shaped article 1, so by simply screwing the connecting element 14th the first plastic hollow molded body 1 in the further connecting element of the further plastic hollow molded body 13, the two plastic hollow shaped bodies 1, 13 can be connected together.
  • FIG. 11 shows a hollow plastic molded article 1 according to the invention which has an end-side section 11 which has been formed as a connecting element 12 to form a further plastic hollow molded article 13.
  • the first hollow plastic molded body 1 has an inner diameter and inner cross section complementary to the further hollow plastic molded body 13, which are matched to one another such that the further hollow plastic molded body 13 can be inserted into the first hollow plastic molded body 1.
  • the inner diameter and the inner geometry of the first hollow plastic molded body 1 is adapted to the outer geometry and the outer circumference of a portion 51 of the second plastic hollow molded body 13. Insertion of the second hollow plastic molded article 13 into the first plastic hollow molded article 1 results in a positive connection between the first plastic hollow molded article 1 and the second plastic hollow molded article 3 for further positional fixation.
  • a fixing element 52 is located between the two end sections 11 , 51 of the first hollow plastic molded body 1 and the second hollow plastic molded body 13 are provided.
  • the fixing element 52 is formed as an adhesive layer.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

La présente invention concerne un procédé de fabrication de corps moulés creux en plastique renforcés par des fibres continues à base de plastique thermoplastique, ainsi qu'un corps moulé creux en plastique fabriqué par le procédé. Le procédé selon l'invention permet de fabriquer d'une manière simple et économique un corps moulé creux en plastique renforcé par des fibres continues formé en une seule pièce, présentant un profil de section transversale fermé et une géométrie extérieure complexe.
EP11773413.7A 2010-10-26 2011-10-21 Procédé de fabrication de corps moulés creux en plastique renforcés par des fibres continues comprenant une matrice en plastique thermoplastique Withdrawn EP2632698A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010049403 2010-10-26
DE102010056240A DE102010056240A1 (de) 2010-10-26 2010-12-24 Verfahren zur Herstellung von endlosfaserverstärkten Kunststoffhohlformkörpern mit einer thermoplastischen Kunststoffmatrix, sowie ein endlosfaserverstärkter Kunststoffhohlformkörper und ein Kraftfahrzeug mit einem endlosfaserverstärkten Kunststoffhohlformkörper
PCT/EP2011/005312 WO2012055516A1 (fr) 2010-10-26 2011-10-21 Procédé de fabrication de corps moulés creux en plastique renforcés par des fibres continues comprenant une matrice en plastique thermoplastique

Publications (1)

Publication Number Publication Date
EP2632698A1 true EP2632698A1 (fr) 2013-09-04

Family

ID=45923247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11773413.7A Withdrawn EP2632698A1 (fr) 2010-10-26 2011-10-21 Procédé de fabrication de corps moulés creux en plastique renforcés par des fibres continues comprenant une matrice en plastique thermoplastique

Country Status (3)

Country Link
EP (1) EP2632698A1 (fr)
DE (1) DE102010056240A1 (fr)
WO (1) WO2012055516A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015111148A1 (de) 2015-07-09 2017-01-12 Kiekert Ag Kraftfahrzeug-Schließeinrichtung
DE102016012350B4 (de) * 2016-10-14 2020-12-10 Audi Ag Verfahren zur Herstellung einer Welle-Nabe-Verbindung zwischen einem FKV-Rohrprofilbauteil und einem mit Nabe ausgebildeten Metallbauteil und verfahrensgemäß hergestellter Stabilisator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6769733B2 (en) * 2001-10-16 2004-08-03 Alcoa Inc. Bulkhead assembly for a motor vehicle

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Publication number Priority date Publication date Assignee Title
SE509446C2 (sv) * 1997-05-12 1999-01-25 Volvo Ab Arrangemang, förfarande och hålkropp vid formning av plastdetaljer
SE9702058L (sv) * 1997-05-30 1998-11-16 Accra Teknik Ab Förfarande för framställning av härdade metalliska hålkroppar av tunnväggig stålplåt genom formblåsning
FR2775232B1 (fr) 1998-02-23 2000-05-12 Peguform France Poutre de pare-chocs de vehicule automobile
FR2793186B1 (fr) * 1999-05-04 2001-06-15 Vetrotex France Sa Produits composites creux et procede de fabrication
US6692064B1 (en) * 1999-08-13 2004-02-17 Conix Corporation Reinforced blow-molded bumpers
FR2835793B1 (fr) 2002-02-08 2004-06-18 Peguform France Piece de poutre de pare-choc pour vehicule comportant deux absorbeurs de chocs et un barreau
KR20050000046A (ko) * 2003-06-23 2005-01-03 이화선 자동차 범퍼 보강구조체
WO2005105417A1 (fr) * 2004-04-29 2005-11-10 Technische Universität Dresden Structure creuse realisee en matiere plastique renforcee avec des elements d'introduction de charge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6769733B2 (en) * 2001-10-16 2004-08-03 Alcoa Inc. Bulkhead assembly for a motor vehicle

Also Published As

Publication number Publication date
WO2012055516A1 (fr) 2012-05-03
DE102010056240A1 (de) 2012-04-26

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