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EP1934005B1 - Procede de moulage sous pression - Google Patents

Procede de moulage sous pression Download PDF

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Publication number
EP1934005B1
EP1934005B1 EP06775167A EP06775167A EP1934005B1 EP 1934005 B1 EP1934005 B1 EP 1934005B1 EP 06775167 A EP06775167 A EP 06775167A EP 06775167 A EP06775167 A EP 06775167A EP 1934005 B1 EP1934005 B1 EP 1934005B1
Authority
EP
European Patent Office
Prior art keywords
casting
opening
die
plug
molten metal
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.)
Not-in-force
Application number
EP06775167A
Other languages
German (de)
English (en)
Other versions
EP1934005A2 (fr
Inventor
Bernhard Fritsche
Bernd Watzinger
Gilbert Moret
Roger Koller
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.)
Buehler Druckguss AG
Original Assignee
Buehler Druckguss 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 Buehler Druckguss AG filed Critical Buehler Druckguss AG
Publication of EP1934005A2 publication Critical patent/EP1934005A2/fr
Application granted granted Critical
Publication of EP1934005B1 publication Critical patent/EP1934005B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2272—Sprue channels
    • B22D17/2281—Sprue channels closure devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2023—Nozzles or shot sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2272—Sprue channels

Definitions

  • the invention relates to a die casting method using metal melts, particularly preferably of aluminum, magnesium or zinc materials for the production of die-cast parts.
  • the DE-A-4326325 discloses a method for selectively draining a metallurgical vessel.
  • the vessel has a drain port in the bottom area, in which a part of the vessel contents is solidified, so that a plug is formed.
  • the thus closed drainage nozzle can be opened by causing the plug to melt.
  • the discharge nozzle is associated with an induction heater.
  • EP-A-1201335 discloses a hot-chamber casting machine including a casting piston 5 with an opening to the mold and having a hot runner system.
  • a plug closes an additional mouthpiece between nozzle and sprue and is only intended to prevent backflow from the mold, which requires a separate receiving space.
  • a plug is formed far from the casting chamber in an additional mouthpiece between the gate and a heated nozzle.
  • the DE-A-10359692 relates to an injection molding device for plastics, wherein a needle is additionally arranged behind a plug which is to remove the plug.
  • the DE-A-10039589 includes a separate from the injection unit, mechanical closure element with which a nozzle after injection from the melt is closed.
  • a device for the production of metal castings in the low pressure range according to EP-B-1458905 The purpose of the invention is to prevent the backflow of melt from the casting chamber by means of controlled valves, similar to a casting device US-A-3800986 ,
  • the invention has for its object to develop a die casting in which a mold-side opening of a casting chamber is closed, this also by the material to be cast itself, an aluminum, magnesium or zinc material so that no mechanically moving closures are required.
  • the mold-side opening of the casting chamber to form resp. to the sprue is formed by a material closure.
  • This material closure is a plug, which may also be disc-shaped and consists of at least teilerstarrtem material (casting material).
  • this plug Before the next shot, this plug is to be at least partially melted, for which purpose the energy of the melt replenished in the casting chamber and / or a heating device is used.
  • the grafting can be done in single as well as in multiple cuts.
  • the formation of plugs is possible on the entire way to the gate as well as in the gate itself. Multiple grafting or grafting in multiple runners are also possible.
  • the casting piston must stop at the current shot in front of the stopper to be formed.
  • closure elements there are no mechanically moving closure elements needed and there is no resp. no substantial loss of material, but the closure can be supplemented by mechanically moving or other closure elements, in particular independently acting elements.
  • the invention thus relates to a high pressure die casting, but no Thixogiess vide.
  • the invention will be described in more detail in exemplary embodiments with reference to a drawing.
  • the drawing shows in the Fig. 1 and 2 schematized parts of a die casting machine.
  • a die casting machine not fully shown, has a casting chamber 1 with a casting piston 2.
  • the casting chamber 1 has a nozzle 3 for docking a dosing tube 5 for dosing from below or alternatively an opening for dosing from above.
  • the opening for dosing from above can also be used as a counter hole be used for venting the casting chamber 1 (reduction of counter-pressure waves).
  • a casting piston 2 opposite the frontal opening 7 to a sprue of the mold cavity of a mold is completely sealed.
  • This seal of the opening 7 is achieved by a plug 4 of the material to be poured.
  • This plug is formed by "excess" molten metal by the casting piston 2 is moved so far in the direction of the opening 7 after a filling of the casting chamber 1 that the mold cavity is completely filled with molten metal and a Schmelzerest in the casting chamber 1 in front of the opening 7 remains.
  • the plug 4 is at least partially remelted during or before the ancestor of the casting piston 2 by means of a heater 10. If necessary, the heat of the molten metal can also be used. The heating of the melt takes place as shown with an inserted heater 10 or by means of a dome resp. Torpedoes 11, which is arranged as a separate element in the melt channel 13.
  • melt supply via a metering valve 12 may be regulated, wherein the melt also passes at the end face of the casting chamber 1 through an inlet opening 9 in this and is pressed by an outlet opening 8 (corresponding to the aforementioned opening 7) of this in the mold and is heated by the torpedo 11.
  • a feed line (metering tube 5) of the melt from an oven after filling the casting chamber 1 and before filling the mold cavity by a second plug 4 ' is closed.
  • the casting chamber 1 can also consist of a fully effetnitr convinced and powder metallurgy produced material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Claims (3)

  1. Procédé de coulée sous pression, en particulier de pièces coulées en matériaux métalliques et notamment en matériaux à base d'aluminium, de magnésium ou de zinc, dans lequel un bain de fusion, notamment d'un matériau à base d'aluminium, est dosé dans une chambre de coulée (1) d'une machine de coulée sous pression, la portion de bain de fusion étant ensuite comprimée dans un cavité de moulage au moyen d'un piston de coulée (2), une ouverture (7) de la chambre de coulée (1) débouchant dans un canal de remplissage de la cavité de moulage étant ensuite refermée après chaque injection de telle sorte qu'il reste entre le piston de coulée (2) et l'ouverture (7) un résidu de bain de fusion qui se solidifie au moins en partie pendant ou après une injection et ferme l'ouverture (7) comme un bouchon (4), un conduit d'amenée de bain de fusion depuis un four étant fermé par un deuxième bouchon (4) après le remplissage de la chambre de coulée (1) et le remplissage de la cavité de moulage.
  2. Procédé de coulée sous pression selon la revendication 1, caractérisé en ce que le piston de coulée (2) avance vers l'ouverture (7) pour former le bouchon.
  3. Procédé de coulée sous pression selon les revendications 1 ou 2, caractérisé en ce qu'après un nouveau remplissage de la chambre de coulée (1), 1 le bouchon (4) est fondu au moins partiellement.
EP06775167A 2005-09-08 2006-09-01 Procede de moulage sous pression Not-in-force EP1934005B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005042867A DE102005042867A1 (de) 2005-09-08 2005-09-08 Druckgiessverfahren
PCT/CH2006/000474 WO2007028265A2 (fr) 2005-09-08 2006-09-01 Procede de moulage sous pression

Publications (2)

Publication Number Publication Date
EP1934005A2 EP1934005A2 (fr) 2008-06-25
EP1934005B1 true EP1934005B1 (fr) 2009-12-09

Family

ID=37232579

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06775167A Not-in-force EP1934005B1 (fr) 2005-09-08 2006-09-01 Procede de moulage sous pression

Country Status (4)

Country Link
EP (1) EP1934005B1 (fr)
AT (1) ATE451191T1 (fr)
DE (2) DE102005042867A1 (fr)
WO (1) WO2007028265A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070131375A1 (en) * 2005-12-09 2007-06-14 Husky Injection Molding Systems Ltd. Thixo-molding shot located downstream of blockage
GB0801887D0 (en) * 2008-02-01 2008-03-12 Smartcast Solutions Ltd Improvements in and relating to metal casting
DE102009039595B4 (de) * 2009-09-01 2020-10-15 Daimler Ag Niederdruckgießvorrichtung
AT512229B1 (de) 2011-11-10 2014-10-15 Mold Thix Consulting Bueltermann Gmbh Vorrichtung, anlage und verfahren zum druckgiessen von metallischem material im thixotropen zustand
DE102012102549A1 (de) 2011-11-15 2013-05-16 Ferrofacta Gmbh Druckgussdüse und Verfahren zum Betrieb der Druckgussdüse
AT515970B1 (de) * 2014-07-03 2018-11-15 Ltc Gmbh Verfahren und Vorrichtung zum Gießen zumindest eines Bauteils
DE102015100861B4 (de) 2015-01-21 2018-07-19 TransMIT Gesellschaft für Technologietransfer mbH Heißkanal für eine Druckgussvorrichtung und Betriebsverfahren dafür
DE102015210403A1 (de) 2015-06-05 2016-12-08 Oskar Frech Gmbh + Co. Kg Angusssystem für eine Druckgießform
DE102015224414A1 (de) * 2015-12-07 2017-06-08 Volkswagen Aktiengesellschaft Gusseinrichtung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3831938A1 (de) * 1987-09-21 1989-04-06 Ube Industries Giessvorrichtung
DE4326325C2 (de) * 1993-08-05 1996-07-11 Inductotherm Coating Equipment Metallurgisches Gefäß
SE506043C2 (sv) * 1996-02-01 1997-11-03 Aga Ab Förfarande vid formsprutning
DE10039589A1 (de) * 2000-08-12 2002-02-21 Krauss Maffei Kunststofftech Vorrichtung zum Druckgiessen von metallischen Formkörpern
EP1201335B1 (fr) * 2000-10-31 2006-05-31 Oskar Frech GmbH + Co. KG Procédé pour la fabrication de pièces coulées sous pression , en particulier à partir de metaux non-ferreux
DE10064300C1 (de) * 2000-12-22 2002-04-25 Bosch Gmbh Robert Gießform mit verbessertem Gießlauf
CA2453170C (fr) * 2002-12-20 2012-02-21 Mold-Masters Limited Appareil de moulage par injection a entree laterale

Also Published As

Publication number Publication date
ATE451191T1 (de) 2009-12-15
EP1934005A2 (fr) 2008-06-25
WO2007028265A3 (fr) 2007-08-02
WO2007028265A2 (fr) 2007-03-15
DE102005042867A1 (de) 2007-03-22
DE502006005612D1 (de) 2010-01-21

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