EP1519821A1 - Procede et dispositif de moulage par injection de corps moules a plusieurs constituants renforces par fibres - Google Patents

Procede et dispositif de moulage par injection de corps moules a plusieurs constituants renforces par fibres

Info

Publication number
EP1519821A1
EP1519821A1 EP03735577A EP03735577A EP1519821A1 EP 1519821 A1 EP1519821 A1 EP 1519821A1 EP 03735577 A EP03735577 A EP 03735577A EP 03735577 A EP03735577 A EP 03735577A EP 1519821 A1 EP1519821 A1 EP 1519821A1
Authority
EP
European Patent Office
Prior art keywords
preform
injection molding
component
plastic
work area
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Withdrawn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
EP03735577A
Other languages
German (de)
English (en)
Inventor
Erwin BÜRKLE
Christoph Lange
Heinz-Wolfgang Rasinger
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.)
KraussMaffei Technologies GmbH
Original Assignee
Krauss Maffei Kunststofftechnik 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 Krauss Maffei Kunststofftechnik GmbH filed Critical Krauss Maffei Kunststofftechnik GmbH
Publication of EP1519821A1 publication Critical patent/EP1519821A1/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Withdrawn legal-status Critical Current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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B29C45/04—Injection moulding apparatus using movable moulds or mould halves
    • B29C45/0441—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement
    • B29C45/045—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement mounted on the circumference of a rotating support having a rotating axis perpendicular to the mould opening, closing or clamping direction
    • 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
    • B29C45/0013—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles
    • 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
    • B29C45/14778—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 article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14786—Fibrous material or fibre containing material, e.g. fibre mats or fibre reinforced material
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
    • B29C45/54—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C2045/1692—Making multilayered or multicoloured articles one layer comprising fibres
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C2045/466—Means for plasticising or homogenising the moulding material or forcing it into the mould supplying the injection unit directly by a compounder
    • 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
    • B29C45/14008—Inserting articles into the mould
    • B29C45/14016—Intermittently feeding endless articles, e.g. transfer films, to the mould
    • 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
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1615—The materials being injected at different moulding stations
    • B29C45/1628—The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations

Definitions

  • the invention relates to a method and a device for producing multi-component molded plastic parts.
  • Multi-component molded plastic parts are, for example, oil pans with a circumferential seal for automobiles, housing covers with circumferential seals, structural components with damping elements, melamine-colored components, etc. or structural components with a core or a layer made of fiber material such as glass fibers or synthetic fibers and a molded or overmolded plastic body.
  • thermoplastic part with an injected elastomer seal
  • a two-stroke injection molding process In a first cycle, a thermoplastic base body is produced in a mold with retractable cores. In a second cycle, the cores are withdrawn and elastomer material is injected into the resulting cavity.
  • indexable insert machines are known in which an indexable insert is rotatably arranged on a turntable between a movable and a fixed platen.
  • the indexable insert carries a tool half on each side, which interact with a tool half on the fixed platen or on the movable platen.
  • an injection unit is assigned to each of the fixed platen or movable platen.
  • In-mold compounders are known per se (DE-PS-114 22 29). They include an extruder, in which plastic material is plasticized, and an injection cylinder, in which the plasticized plastic material is fed, possibly with the interposition of a pressure accumulator, and then injected from the injection cylinder into a mold.
  • a multi-phase plastic mass is produced in the extruder, for example by adding glass fiber material, carbon fiber material, mixing systems or fillers for the production of highly filled molding materials.
  • This material is used as a component in the injection molding process for the production of multi-component plastic parts.
  • Other materials can also be prepared and injected using an in-mold compounder or another known injection molding unit.
  • Elastomers in the form of crosslinking plastics, rubber or LSR or thermoplastic elastomers are suitable as a further component.
  • a preliminary product made of fiber material is formed into a preform in the first work area, and at the same time a preform is subjected to an injection molding process in the second work area, ie plastic material is injection molded onto the preform or the preform is overmolded with plastic material.
  • the finished plastic molded part is then removed from the second work area, and the preform produced in the first work area is transported to the second work area via the indexable insert.
  • woven or nonwoven materials made of glass, natural, carbon or synthetic fibers, preferably in the form of an endless belt; the plastic material is preferably a thermoplastic.
  • indexable insert machines are particularly suitable for use with two injection units.
  • Such a structure can also be used according to the invention in order to inject an additive into the second working area when the preform is formed.
  • This additive can be, for example, a hardener to harden synthetic fibers, a binder to prevent the preform from expanding when the mold is opened, a plastic material or an additive that improves the adhesion of the fiber material to the plastic to be injected later.
  • the figure shows an injection molding machine with a fixed platen 2, a movable platen 4 and a turning plate 6.
  • the mold platen carry Molding tools 3, 5, which together with the insert 6 form cavities for the production of plastic molded parts.
  • the indexable insert 6 and the movable platen 4 are axially displaceable, the movable platen 4 being moved toward or away from the fixed platen 2 via spars 8 which are guided through the fixed platen.
  • a drive 10 and (schematically) a first injection unit I and a second injection unit II.
  • the entire structure comprising the drive and the platen is mounted on a module frame 20, which in turn is attached to a machine bed 35 of the injection molding machine.
  • a first work area A is formed between the movable platen 4 and the insert 6 and a second work area B is formed between the insert 6 and the fixed platen 2.
  • a fiber material is introduced into the mold cavity of the first working area A, preferably in the form of an endless belt, as indicated by the arrow P.
  • the molds are then closed by moving the movable platen 4 and the turning plate 6 towards the fixed platen, and a preform is formed in the first work area, while at the same time a preform with plastic that has already been produced is made in the cavity of the second work area B by means of the second injection unit II is encapsulated.
  • the injection unit I shown in the figure is optional and, if necessary, can be used to inject an additive into the cavity of the first working area A when the preform is formed.
  • injection screw devices are shown as injection units; instead or in combination with it, in-mold compounders can also be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication de corps moulés en plastique à plusieurs constituants, par moulage par injection, au moins un constituant étant fabriqué à l'aide d'un formulateur dans le moule. L'invention vise à fabriquer des éléments à plusieurs constituants contenant des noyaux ou des couches de tissus et non-tissés de fibres. A cet effet, on fait intervenir une machine à plaque modèle à double face présentant deux zones de travail (A, B). Selon l'invention, le matériau de fibres est modelé sous forme d'ébauche dans la zone de travail (A), dans une cavité outil, et une ébauche modelée au préalable est simultanément enrobée de plastique par injection dans la zone de travail (B) ou du plastique est pulvérisé sur ladite ébauche. Ensuite, la plaque modèle à double face est tournée autour d'un axe axial de manière que l'ébauche est transportée de la zone de travail (A) vers la zone de travail (B), le corps moulé fini est prélevé, et le cycle de fabrication recommence à zéro. Le dispositif selon l'invention peut éventuellement comporter une deuxième unité de moulage par injection (I) servant à injecter un additif tel qu'un durcisseur, liant ou similaire dans la cavité, lors du modelage de l'ébauche.
EP03735577A 2002-06-21 2003-06-07 Procede et dispositif de moulage par injection de corps moules a plusieurs constituants renforces par fibres Withdrawn EP1519821A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10227636 2002-06-21
DE2002127636 DE10227636A1 (de) 2002-06-21 2002-06-21 Verfahren und Vorrichtung zum Herstellen mehrkomponentiger Kunststoff-Formteile
PCT/EP2003/006004 WO2004000525A1 (fr) 2002-06-21 2003-06-07 Procede et dispositif de moulage par injection de corps moules a plusieurs constituants renforces par fibres

Publications (1)

Publication Number Publication Date
EP1519821A1 true EP1519821A1 (fr) 2005-04-06

Family

ID=29723332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03735577A Withdrawn EP1519821A1 (fr) 2002-06-21 2003-06-07 Procede et dispositif de moulage par injection de corps moules a plusieurs constituants renforces par fibres

Country Status (5)

Country Link
EP (1) EP1519821A1 (fr)
CN (1) CN1662356A (fr)
AU (1) AU2003236718A1 (fr)
DE (1) DE10227636A1 (fr)
WO (1) WO2004000525A1 (fr)

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DE102005016240A1 (de) * 2005-04-08 2006-10-12 Krauss-Maffei Kunststofftechnik Gmbh Horizontalspritzgießmaschine mit einer verfahrbaren Dreheinrichtung für Formen von Spritzgießwerkzeugen
DE102005016239A1 (de) * 2005-04-08 2006-10-12 Krauss-Maffei Kunststofftechnik Gmbh Horizontalspritzgießmaschine mit Dreheinrichtung
DE102005039124B4 (de) * 2005-08-15 2009-11-26 Faurecia Innenraum Systeme Gmbh Verfahren zur Herstellung eines zweischichtigen Verbundteils
US7313459B2 (en) * 2006-03-13 2007-12-25 Husky Injection Molding Systems Ltd. System for overmolding insert
DE102006026063B4 (de) * 2006-06-03 2020-02-27 Kraussmaffei Technologies Gmbh Verfahren zur Herstellung von beschichteten Verbund-Kunststoffformteilen und Spritzgießmaschine hierfür
DE102006029208B4 (de) 2006-06-26 2010-06-10 Franz Josef Summerer Spritzgießmaschine und Spritzgießverfahren zum Spritzgießen von Kunststoff-Formteilen mit mehreren Entformrichtungen
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DE102010019625B4 (de) * 2009-05-27 2017-08-24 Engel Austria Gmbh Verfahren zur Herstellung einer Verbund- oder Hybridkonstruktion
CN102609052B (zh) * 2011-01-20 2014-12-31 群达塑胶电子（深圳）有限公司 一种碳纤维笔记本电脑外壳及其制造方法及其制造工具
CN102609051B (zh) * 2011-01-20 2015-03-11 群达塑胶电子（深圳）有限公司 一种碳纤维笔记本电脑外壳及其制造方法
US9010839B2 (en) 2012-10-24 2015-04-21 Sabic Global Technologies B.V. Vehicle side door structure and method of making and using the same
DE102012220979A1 (de) * 2012-11-16 2014-05-22 Lisa Dräxlmaier GmbH Flexibilisierung, Stabilisierung und Fixierung von Kohlenstofffasermatten
CN106217897B (zh) * 2016-09-19 2018-09-28 福州福耀模具科技有限公司 通过压注复合工艺来成型纤维板产品的装置和方法
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DE112018007671T5 (de) * 2018-05-30 2021-07-22 HELLA GmbH & Co. KGaA Verfahren und Werkzeugsystem zur Herstellung eines Mehrkomponentenkunststoffformteils

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Also Published As

Publication number Publication date
AU2003236718A1 (en) 2004-01-06
WO2004000525A1 (fr) 2003-12-31
CN1662356A (zh) 2005-08-31
DE10227636A1 (de) 2004-01-15

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