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WO2008125233A1 - Procédé de fabrication d'un élément composite - Google Patents

Procédé de fabrication d'un élément composite Download PDF

Info

Publication number
WO2008125233A1
WO2008125233A1 PCT/EP2008/002683 EP2008002683W WO2008125233A1 WO 2008125233 A1 WO2008125233 A1 WO 2008125233A1 EP 2008002683 W EP2008002683 W EP 2008002683W WO 2008125233 A1 WO2008125233 A1 WO 2008125233A1
Authority
WO
WIPO (PCT)
Prior art keywords
hollow profile
injection molding
composite component
engraving
producing
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.)
Ceased
Application number
PCT/EP2008/002683
Other languages
German (de)
English (en)
Inventor
Michael Bechtold
Kai-Uwe Dudziak
Jürgen GADE
Eckhard Reese
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.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
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 Daimler AG filed Critical Daimler AG
Publication of WO2008125233A1 publication Critical patent/WO2008125233A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C2045/14213—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure deforming by gas or fluid pressure in the mould cavity
    • 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
    • B29L2023/00—Tubular articles

Definitions

  • the invention relates to a method for producing a composite component according to the preamble of claim 1
  • a generic method is known from DE 100 14 332 C2.
  • a preformed or unshaped hollow profile is inserted into a mold cavity of a hydroforming tool, hereinafter referred to as hydroforming tool, and filled with a pressurized fluid and pressurized.
  • hydroforming tool When closing the hydroforming tool, the hollow profile is compressed at least one point from the tool, which causes the hollow profile to expand elsewhere. In this case, the hollow profile receives the desired shape and contour upon contact with the engraving of the hydroforming tool.
  • injection molding material is injected via an integrated into the hydroforming die insert an injection mold in a now open, but closed during the forming cavity injection molding material, which encloses the deformed hollow profile.
  • the injection molding element Upon solidification of the material, the injection molding element is formed, which undergoes a shrinkage process during solidification and thus presses against the hollow profile.
  • the composite component is made with it. Although the process takes place in the same tool, it requires a relatively long cycle time. Furthermore, the contour or the cross section of the composite component is subject to manufacturing tolerances due to the unevenly proceeding shrinking process.
  • the invention has the object of developing a generic method to the effect that in a simple manner a reproducible high-precision contour and cross section of the composite component while reducing the cycle time in the manufacturing process is made possible.
  • the forming process by means of hydroforming and the injection molding process do not take place successively, as is known from the prior art, but simultaneously or with an overlapping time.
  • the time required for producing the composite component is enormously reduced, which makes the method particularly economical.
  • it is dispensed with slide or movable cores, which - as usual - cover the Spritzg discernkavtician during the conversion, so that here also time-consuming equipment for the production of the composite component is saved.
  • the injected injection molding material located in the melted or doughy state is pressed against the tool engraving, whereby it very precisely reproduces the contour of the engraving.
  • the method also has an advantageous effect on thin-walled hollow profile materials and / or hollow profile materials with low ductility or low elongation at break, since the heat of fusion of the injection molding material favors the formability of the hollow profile material.
  • higher degrees of deformation during expansion of the hollow profile can be achieved in special cases.
  • it is advantageously prevented that the injection molding pressure unevenness forms the hollow profile and thus changes the contour, since the forming pressure equally forms an internal support pressure for the hollow profile against the injection molding.
  • the invention offers the advantage that in a single engraving two molding process types are applied to the hollow section without this to implement the execution of one or the other method. This also saves manufacturing time and prevents otherwise occurring manufacturing tolerances.
  • the hollow profile is only after its attachment to the engraving section, which is adjacent to the bulge region. molded. This ensures that the injection molding material does not pass between the hollow profile and the engraving in the adjoining area, otherwise a portion of the intended for the formation of the injection molding of injection molding material may be undesirable lost and therefore the injection molding element can not form properly. Furthermore, the hollow profile in the adjoining area would not be reshaped konturrois, as the lying between the engraving and the hollow profile injection molding material not allows. However, the loss of time in the entire production of the composite component caused by time-delayed encapsulation is irrelevant, since the hollow profile very quickly engages the engraving in the adjoining area due to the small distance.
  • Fig. 1 in a lateral longitudinal section, in sections, an inserted in an IHU tool hollow profile before forming, Fig. 2 in a lateral longitudinal section of the hollow profile
  • an IHU tool 1 is shown with an integrated injection molding insert 2, wherein the hydroforming die 1 and the injection molding insert 2 have a common engraving 3, which limit a mold space 4.
  • a hollow profile 5 is inserted, the pre-formed, for example, pre-bent, or may be undeformed.
  • the engraving 3 has, at the location of the injection molding insert 2, a cavity 6, into which injection molding channels 7 of the insert 2 open.
  • the injection molding channels 7 can open in a direction away from the gravure in a single feed channel, so that the insert 2 not only structurally simplified but also a uniform Spritzg screen horr can be constructed in a simple manner.
  • the engraving has a plurality of cavities which can be charged by the same supply channel via a plurality of branch channels.
  • the hollow profile 5 is inserted into the engraving 3 of the hydroforming die 1, after which it is closed.
  • the hollow profile 5 is now sealed high-pressure-tight end by means of two axial punches and filled via a connected to a fluid pressure system in at least one of the axial punch extending passage with a pressurized fluid.
  • the hollow profile 5 is spaced in this state from the engraving 3 outside the cavity 6 through a gap 8.
  • the pressure fluid is now stretched, causing the hollow profile 5 expands.
  • the hollow profile 5 bears against the engraving 3 outside the cavity 6 while bridging the gap 8 and bulges into the cavity 6.
  • the adjoining this cavity 6 section 9 of the engraving 3, which forms the abutment region mentioned above, is sealed by the pressing system of the hollow profile 5.
  • the hollow section 5 bulges into the cavity 6, injection molding material is injected into the cavity 6 via the injection molding channels 7, which is distributed around the hollow profile 5 in its bulging region 10, adjacent to the engraving section 9.
  • the hollow profile 5 according to FIG. 3 is brought into its final shape.
  • the injection molding material fills the remaining between the fully expanded hollow section 5 and the cavity 6 gap 11 completely and forms on the contour of the cavity 6 under pressing by means of the under still fluid internal high pressure standing hollow section 5 from.
  • the injection molding material cools and solidifies in the sequence, steadily in contact with the cavity contour and forms an injection molding element 12.
  • the resulting composite component which consists of the deformed and overmolded hollow profile 5 and the injection molding element 12 can then be removed after relaxing the pressure in the hollow section 5 and the discharge of the pressurized fluid out of this and after opening the hydroforming die 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un élément composite, un profil creux (5) étant étiré au moyen d'une pression élevée interne fluide en une forme finale et le profil creux (5) étant extrudé par formation d'un élément de moulage par injection (12) avec un matériau de moulage par injection. Afin de fabriquer de manière plus simple un gabarit et une section transversale hautement reproductibles pour l'élément composite en diminuant simultanément la cadence de production du procédé de fabrication, il est proposé que le profil creux (5) soit extrudé pendant son étirement, par lequel étirement une zone d'emboutissage (10) est transformée au niveau du profil creux (5), dans la zone d'emboutissage (10).
PCT/EP2008/002683 2007-04-13 2008-04-04 Procédé de fabrication d'un élément composite Ceased WO2008125233A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007017414.6 2007-04-13
DE102007017414A DE102007017414A1 (de) 2007-04-13 2007-04-13 Verfahren zur Herstellung eines Verbundbauteils

Publications (1)

Publication Number Publication Date
WO2008125233A1 true WO2008125233A1 (fr) 2008-10-23

Family

ID=39643829

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/002683 Ceased WO2008125233A1 (fr) 2007-04-13 2008-04-04 Procédé de fabrication d'un élément composite

Country Status (2)

Country Link
DE (1) DE102007017414A1 (fr)
WO (1) WO2008125233A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009039081A1 (de) 2009-08-27 2011-03-03 Daimler Ag Verfahren zum Herstellen eines Verbundbauteils
DE102019208562A1 (de) * 2019-06-12 2020-12-17 Elringklinger Ag Verfahren zum Herstellen eines Bauteils, Bauteil, Formgebungswerkzeug zum Herstellen eines Bauteils und Vorrichtung zum Herstellen eines Bauteils

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012018788B4 (de) 2012-09-22 2021-05-27 Daimler Ag Verfahren zur Herstellung eines Verbundbauteils
DE102014004158A1 (de) 2014-03-17 2015-09-17 Technische Universität Dresden Verfahren zur Herstellung von Strukturelementen aus Lasteinleitungselement und Faser-Kunststoff-Verbund-Hohlprofil und Strukturelemente
DE102014019724A1 (de) 2014-03-17 2015-09-17 Technische Universität Dresden Verfahren zur Herstellung von Strukturelementen aus Funktionselement und Faser-Kunststoff-Verbund-Hohlprofil und Strukturelemente
DE102015011893A1 (de) 2015-09-11 2017-03-16 Daimler Ag Verfahren und Werkzeug zur Herstellung eines Bauteils
DE102016224015A1 (de) 2016-12-02 2018-06-07 Zf Friedrichshafen Ag Verfahren zum Herstellen eines Bauteils

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0577026A (ja) * 1991-09-25 1993-03-30 Mazda Motor Corp 複合カムシヤフト及びその製造方法
DE10014332A1 (de) * 2000-03-24 2001-10-04 Basf Ag Verbundbauteil und Verfahren zur seiner Herstellung
WO2001087568A1 (fr) * 2000-05-17 2001-11-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procede et dispositif de fabrication d'une piece moulee a partir d'un compose plastique/metallique et utilisation dudit dispositif
DE10326768A1 (de) * 2002-06-28 2004-01-22 Basf Ag Verfahren zur Herstellung von Hybridbauteilen aus Kunststoff und hydrogeformten Profilen
WO2008067901A1 (fr) * 2006-12-06 2008-06-12 Daimler Ag Procédé de fabrication d'un composant composite

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0577026A (ja) * 1991-09-25 1993-03-30 Mazda Motor Corp 複合カムシヤフト及びその製造方法
DE10014332A1 (de) * 2000-03-24 2001-10-04 Basf Ag Verbundbauteil und Verfahren zur seiner Herstellung
WO2001072495A1 (fr) * 2000-03-24 2001-10-04 Basf Aktiengesellschaft Element de construction composite et son procede de production
WO2001087568A1 (fr) * 2000-05-17 2001-11-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procede et dispositif de fabrication d'une piece moulee a partir d'un compose plastique/metallique et utilisation dudit dispositif
DE10326768A1 (de) * 2002-06-28 2004-01-22 Basf Ag Verfahren zur Herstellung von Hybridbauteilen aus Kunststoff und hydrogeformten Profilen
WO2008067901A1 (fr) * 2006-12-06 2008-06-12 Daimler Ag Procédé de fabrication d'un composant composite

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009039081A1 (de) 2009-08-27 2011-03-03 Daimler Ag Verfahren zum Herstellen eines Verbundbauteils
WO2011023258A1 (fr) 2009-08-27 2011-03-03 Daimler Ag Procédé de production d'un composant composite
US20120181731A1 (en) * 2009-08-27 2012-07-19 Daimler Ag Method of Producing a Composite Component
US9387609B2 (en) 2009-08-27 2016-07-12 Daimler Ag Method of producing a composite component
DE102009039081B4 (de) * 2009-08-27 2020-03-05 Daimler Ag Verfahren zum Herstellen eines Verbundbauteils
DE102019208562A1 (de) * 2019-06-12 2020-12-17 Elringklinger Ag Verfahren zum Herstellen eines Bauteils, Bauteil, Formgebungswerkzeug zum Herstellen eines Bauteils und Vorrichtung zum Herstellen eines Bauteils

Also Published As

Publication number Publication date
DE102007017414A1 (de) 2008-10-23

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