EP1934005A2 - Procede de moulage sous pression - Google Patents

Procede de moulage sous pression

Info

Publication number
EP1934005A2
EP1934005A2 EP06775167A EP06775167A EP1934005A2 EP 1934005 A2 EP1934005 A2 EP 1934005A2 EP 06775167 A EP06775167 A EP 06775167A EP 06775167 A EP06775167 A EP 06775167A EP 1934005 A2 EP1934005 A2 EP 1934005A2
Authority
EP
European Patent Office
Prior art keywords
die casting
opening
casting
chamber
filling
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.)
Granted
Application number
EP06775167A
Other languages
German (de)
English (en)
Other versions
EP1934005B1 (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

Links

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.
  • DE-A-4326325 discloses a method for selectively discharging 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 emptying nozzle can be opened by melting the plug.
  • the discharge nozzle is associated with an induction heater.
  • 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 the mold resp. formed to the sprue by a material closure is preferably a plug, which may also be disc-shaped made 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 can be supplemented by mechanically moving or other closure elements, in particular elements acting independently of one another.
  • the invention is further based on the object to provide a die casting machine for carrying out the method.
  • the die casting machine contains i.a. following features:
  • the casting chamber has at least one channel to a mold (molding channel) and a connection channel to a melting furnace.
  • Form channels can be closed at the mold inlet and the connection channel can be closed.
  • Cyclic cooling or heating by active or passive means e.g. inductive or conductive heating elements, inserts for insulation u.a.
  • the invention thus relates to a high pressure die casting, but no Thixogiessverfah- ren.
  • FIG. 1 shows schematically in Figs. 1 and 2 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 metering from above can also be used as a counter- hole used for venting the casting chamber 1 (reduction of counter-pressure waves).
  • An end opening 7 opposite the casting piston 2 to a runner channel of the mold cavity of a mold is completely sealable.
  • 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 remains in the casting chamber 1 in front of the opening 7.
  • the stopper 4 is at least partially remelted during or before the ancestor of the casting piston 2 by means of a heater 10.
  • the heat of the molten metal can also be used, as shown, with an inserted heater 10 or by means of a dome or torpedo 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.
  • the casting chamber 1 can also consist of a fully effetnitr faced and powder metallurgy produced material. reference numeral

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)
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 true EP1934005A2 (fr) 2008-06-25
EP1934005B1 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007028265A3 *

Also Published As

Publication number Publication date
WO2007028265A3 (fr) 2007-08-02
EP1934005B1 (fr) 2009-12-09
WO2007028265A2 (fr) 2007-03-15
DE102005042867A1 (de) 2007-03-22
ATE451191T1 (de) 2009-12-15
DE502006005612D1 (de) 2010-01-21

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