EP2425913A1 - Dispositif amélioré de remplissage de métal fondu dans les moules de machines à couler sous pression - Google Patents

Dispositif amélioré de remplissage de métal fondu dans les moules de machines à couler sous pression Download PDF

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Publication number
EP2425913A1
EP2425913A1 EP11006894A EP11006894A EP2425913A1 EP 2425913 A1 EP2425913 A1 EP 2425913A1 EP 11006894 A EP11006894 A EP 11006894A EP 11006894 A EP11006894 A EP 11006894A EP 2425913 A1 EP2425913 A1 EP 2425913A1
Authority
EP
European Patent Office
Prior art keywords
die
container cylinder
chamber
liquid metal
container
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Withdrawn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
EP11006894A
Other languages
German (de)
English (en)
Inventor
Claudio Marconi
Claudio Busi
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.)
Marconi Srl Forni e Macchine Industriali
Maicopresse SpA
Original Assignee
Marconi Srl Forni e Macchine Industriali
Maicopresse SpA
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 Marconi Srl Forni e Macchine Industriali, Maicopresse SpA filed Critical Marconi Srl Forni e Macchine Industriali
Publication of EP2425913A1 publication Critical patent/EP2425913A1/fr
Withdrawn legal-status Critical Current

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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
    • B22D17/30—Accessories for supplying molten metal, e.g. in rations
    • 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
    • B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
    • B22D17/10—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled with horizontal press motion
    • 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
    • B22D17/14—Machines with evacuated die cavity
    • 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
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2053—Means for forcing the molten metal into the die using two or more cooperating injection pistons

Definitions

  • the present invention relates to an improved device for filling molten metal into pressing chambers in die-casting machines.
  • the present invention relates to a filling device for pressing chambers in die-casting machines, especially of the type that uses non-ferrous alloys such as aluminium and alloys thereof.
  • die-casting is a process wherein the molten metal is introduced in a metal mould or die at high speed and solidified under pressure; such process may be of the so-called type in "hot chamber” or in “cold chamber” according to the construction type of the machine.
  • Die-casting machines are provided with a container cylinder/feeder wherein the molten metal is introduced, injected in a die or mould by means of a hydraulic piston or injector piston so as to obtain the desired shape for the part to be produced.
  • the filling of the container cylinder/feeder is carried out through a container or cup containing the molten metal and moved by mechanical means such as articulated robot arms or by means of a raceway with dispensing furnace, or other known systems; the container or cup, for example, contains a predetermined amount of molten metal collected from a smelting tank and transferred to the container cylinder.
  • the traditional techniques exhibit some important drawbacks related to the fact that the operation for transporting the molten metal, typically but not exclusively aluminium and alloys thereof, to the container/feeder by means of the container or cup or raceway with dispensing furnace or other known systems, causes a partial oxidation of the molten metal with consequent influences on the moulding process and on the quality of the finished product in output from the mould or die.
  • a further drawback is related to the fact that since the traditional filling processes use mechanical systems such as robot arms, raceways etc., they tend to be quite expensive in terms of maintenance, control and programming of the filling cycle.
  • a further drawback is related to the fact that the use of a container or cup, as well as the use of a raceway with dispensing furnace, require periodical check and maintenance works with possible and consequent production downtimes.
  • the object of the present invention is to obviate the drawbacks discussed hereinabove.
  • the object of the present invention is to provide an improved device for filling molten metal in pressing chambers in die-casting machines suitable for allowing an easy filling of the container/feeder with the molten metal.
  • a further object of the present invention is to provide a device for filling the molten metal such as to prevent and/or eliminate the drawback related to the oxidation of the liquid metal, in particular aluminium, contained in the container or cup or in the raceway with dispensing furnace and which occurs during the path from the smelting bath to the die-casting machine.
  • a further object of the present invention is to provide a filling device suitable for preventing the use of a container or cup and of the devices for moving the liquid metal, raceways with dispensing furnace, etc., thus reducing the related costs.
  • a further object of the present invention is to provide the users with an improved device for filling molten metal into pressing chambers in die-casting machines suitable for ensuring a high level of resistance and reliability over time and moreover, such as to be easily and inexpensively constructed.
  • the in improved device for filling molten metal into pressing chambers in die-casting machines of the present invention stabilised relative to a die-casting machine and to a mould formed by two dies or half moulds and comprising a container cylinder provided with a chamber for feeding with liquid metal collected from a smelting tank, an injecting piston sliding axially within the same container cylinder, means for feeding and controlling the liquid metal inside said chamber.
  • the improved device for filling molten metal into pressing chambers in die-casting machines of the present invention is stabilised relative to a die-casting machine 12 (only shown schematically and partially) and to a mould 14 defined by two dies or half moulds 16 and 18, whereof one is movable so as to allow the opening of the same mould for removing the finished product.
  • the device of the invention comprises a container cylinder 20 provided with a chamber 22 wherein the molten metal 24 coming from a tank 23 of a smelting furnace is introduced.
  • An injector piston 26 engages with the container cylinder 20 and is axially sliding in chamber 22 of the same container cylinder in order to push the liquid metal 24 in the direction of mould 14 through a casting channel 28.
  • valve or cap 30 having the function of opening and closing the container cylinder 20 and consequently, the casting channel 28 as described hereinafter.
  • the liquid metal 24 present in chamber 22 arrives from tank 23 through a conduit 32 mechanically coupled with container 20 and enters said chamber through a hole 25 made on the side surface of the container cylinder 20.
  • a sensor 38 is applied on the same container cylinder 20, preferably a laser or ultrasound sensor or other known type such as a mechanical sensor, suitable for performing the function described hereinafter.
  • the filling device of the invention described in detail hereinabove with reference to component features thereof, is described hereinafter with reference to the operating modes thereof.
  • the container cylinder 20, through union 34 and pipe 36 connecting to the vacuum generation system, is set to vacuum causing the suction of the liquid metal 24 from tank 23 within chamber 22 of the same container through conduit 32 and hole 25.
  • Said chamber 22 of container 20 is closed at the two ends through the injector piston 26 and the valve or cap 30.
  • Sensor 38 controls the filling level of chamber 22 of the container cylinder 20 and when the level of liquid metal 24 has reached the desired amount for filling mould 14, the injector piston 26 starts advancing in axial direction, compressing and pushing the liquid metal and then, once the injector piston 26 has closed hole 25, the vacuum generation system is closed; when said thrust action overcomes the opposing force exerted by the valve or cap 30, it moves allowing the liquid metal 24 to flow through the casting channel 22 and to fill mould 14.
  • valve or cap 30 is controlled and moved with mechanical means, such as for example a piston or a mechanical linkage or the like; such movement is regulated by means of a timer or other known type of sensor.
  • the improved device for filling molten metal into pressing chambers in die-casting machines of the present invention advantageously allows carrying out the filling process of the die-casting mould without the need of feeding the container with liquid metal in an indirect manner through a container or cup, a raceway with dispensing furnace or other traditional systems; in this way, the drawback related to the oxidation of the liquid metal during the path from the smelting furnace to the die-casting machine is prevented.
  • a further advantage is the fact that the filling device of the invention does not require the use of a container or cup for feeding the molten metal, the devices for moving the container or a raceway with dispensing furnace, with consequent reduction of the related costs.
  • a further advantage is given by the fact that the filling device of the invention is easily applied also on die-casting devices not originally designed for such specific type of filling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Press Drives And Press Lines (AREA)
EP11006894A 2010-09-06 2011-08-24 Dispositif amélioré de remplissage de métal fondu dans les moules de machines à couler sous pression Withdrawn EP2425913A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001606A ITMI20101606A1 (it) 2010-09-06 2010-09-06 Dispositivo perfezionato per il riempimento di metallo fuso in camere di pressatura nelle macchine di pressofusione

Publications (1)

Publication Number Publication Date
EP2425913A1 true EP2425913A1 (fr) 2012-03-07

Family

ID=43738855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11006894A Withdrawn EP2425913A1 (fr) 2010-09-06 2011-08-24 Dispositif amélioré de remplissage de métal fondu dans les moules de machines à couler sous pression

Country Status (2)

Country Link
EP (1) EP2425913A1 (fr)
IT (1) ITMI20101606A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10040117B2 (en) * 2016-12-29 2018-08-07 Vinet Micro-Technologies Inc. Contaminant-purging cold chamber die casting apparatus and method
CN111069566A (zh) * 2020-01-03 2020-04-28 上海交通大学 一种铝/镁合金半固态浆料原位制备与成型方法及装置
CN116833388A (zh) * 2023-09-04 2023-10-03 宁波吉烨汽配模具有限公司 一种用于钣金的压铸设备
WO2024049886A1 (fr) * 2022-09-01 2024-03-07 Tesla, Inc. Coulée sous pression à injection centrale à contre-piston

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU442010A1 (ru) * 1973-01-25 1974-09-05 Предприятие П/Я Р-6382 Устройство дл дозировани расплава
DE4239558A1 (de) * 1992-11-25 1994-05-26 Mueller Weingarten Maschf Verfahren zur Unterdruck-Herstellung bei einer Druckgießmaschine
JPH0924454A (ja) * 1995-07-11 1997-01-28 Toyota Motor Corp 鋳造装置
JP2000024767A (ja) * 1998-07-14 2000-01-25 Takashi Ikeda 鋳造装置の給湯システム
DE19850499C1 (de) 1998-11-02 2000-04-13 Friedrich Wieser Verfahren und Vorrichtung zum Druck- oder Spritzgießen
EP1516687A1 (fr) * 2003-08-25 2005-03-23 Fondarex S.A. Machine à coulée sous pression sous vide ou machine de moulage par injection sous vide
DE102007060418A1 (de) * 2007-12-14 2009-06-18 Martin Baumann Verfahren und Vorrichtung zum Vakuum-Druckgießen zur Herstellung von porenarmen und warmbehandelbaren Gussteilen
DE102008057440A1 (de) * 2008-11-14 2010-05-27 Jens GLÜCKLICH Druckgussanlage mit Füllung des Druckgusszylinders von unten

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU442010A1 (ru) * 1973-01-25 1974-09-05 Предприятие П/Я Р-6382 Устройство дл дозировани расплава
DE4239558A1 (de) * 1992-11-25 1994-05-26 Mueller Weingarten Maschf Verfahren zur Unterdruck-Herstellung bei einer Druckgießmaschine
JPH0924454A (ja) * 1995-07-11 1997-01-28 Toyota Motor Corp 鋳造装置
JP2000024767A (ja) * 1998-07-14 2000-01-25 Takashi Ikeda 鋳造装置の給湯システム
DE19850499C1 (de) 1998-11-02 2000-04-13 Friedrich Wieser Verfahren und Vorrichtung zum Druck- oder Spritzgießen
EP1516687A1 (fr) * 2003-08-25 2005-03-23 Fondarex S.A. Machine à coulée sous pression sous vide ou machine de moulage par injection sous vide
DE102007060418A1 (de) * 2007-12-14 2009-06-18 Martin Baumann Verfahren und Vorrichtung zum Vakuum-Druckgießen zur Herstellung von porenarmen und warmbehandelbaren Gussteilen
DE102007060418B4 (de) 2007-12-14 2010-11-11 Martin Baumann Verfahren und Vorrichtung zum Vakuum-Druckgießen zur Herstellung von porenarmen und warmbehandelbaren Gussteilen
DE102008057440A1 (de) * 2008-11-14 2010-05-27 Jens GLÜCKLICH Druckgussanlage mit Füllung des Druckgusszylinders von unten

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10040117B2 (en) * 2016-12-29 2018-08-07 Vinet Micro-Technologies Inc. Contaminant-purging cold chamber die casting apparatus and method
US10875088B2 (en) * 2016-12-29 2020-12-29 Vinet Micro-Technologies Inc. Contaminant-purging cold chamber die casting apparatus and method
CN111069566A (zh) * 2020-01-03 2020-04-28 上海交通大学 一种铝/镁合金半固态浆料原位制备与成型方法及装置
CN111069566B (zh) * 2020-01-03 2021-12-17 上海交通大学 一种铝/镁合金半固态浆料原位制备与成型方法及装置
WO2024049886A1 (fr) * 2022-09-01 2024-03-07 Tesla, Inc. Coulée sous pression à injection centrale à contre-piston
CN116833388A (zh) * 2023-09-04 2023-10-03 宁波吉烨汽配模具有限公司 一种用于钣金的压铸设备
CN116833388B (zh) * 2023-09-04 2023-12-15 宁波吉烨汽配模具有限公司 一种用于钣金的压铸设备

Also Published As

Publication number Publication date
ITMI20101606A1 (it) 2012-03-07

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