EP1472027B1 - Vorrichtung und verfahren zur herstellung von gegenständen aus aluminiumlegierungen oder leichtmetalllegierungen - Google Patents

Vorrichtung und verfahren zur herstellung von gegenständen aus aluminiumlegierungen oder leichtmetalllegierungen Download PDF

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Publication number
EP1472027B1
EP1472027B1 EP03737299A EP03737299A EP1472027B1 EP 1472027 B1 EP1472027 B1 EP 1472027B1 EP 03737299 A EP03737299 A EP 03737299A EP 03737299 A EP03737299 A EP 03737299A EP 1472027 B1 EP1472027 B1 EP 1472027B1
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EP
European Patent Office
Prior art keywords
liquid metal
input duct
concave portion
lower die
die
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.)
Expired - Lifetime
Application number
EP03737299A
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English (en)
French (fr)
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EP1472027A1 (de
Inventor
Claudio Frulla
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.)
Esjotech Srl
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Esjotech Srl
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Publication date
Application filed by Esjotech Srl filed Critical Esjotech Srl
Publication of EP1472027A1 publication Critical patent/EP1472027A1/de
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Publication of EP1472027B1 publication Critical patent/EP1472027B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/08—Controlling, supervising, e.g. for safety reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B22D2/003—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the level of the molten metal

Definitions

  • the present invention relates to an apparatus for manufacturing items made of aluminum, aluminum alloys, light alloys and the like.
  • a casting technique which is known as low-pressure casting, wherein the liquid metal is made to rise from the furnace through a duct for introducing the liquid metal that exits upward in a die formed by two or more parts.
  • the liquid metal must solidify, and this occurs normally over a relatively long time, furthermore forming a relatively large sprue at the liquid metal input channel.
  • This type of casting has the drawback of having long casting times in addition to a waste of material determined by the sprue and to the fact that the cast item has a structure that is relatively scarcely compacted, since casting occurs at low pressure.
  • the aim of the invention is indeed to solve the above problems, providing an apparatus and a method for manufacturing items made of aluminum, aluminum alloys, light alloys and the like, which allows to cast items that have a very compact structure without however having to use a dosage device to introduce the liquid metal, which is instead in practice dosed automatically by the apparatus.
  • an object of the invention is to provide an apparatus and a method that allows to produce items without sprue and with considerably shorter times for obtaining the solidification step.
  • Another object of the present invention is to provide an apparatus and a method that allows to provide, with a single casting operation, a plurality of parts that may optionally be different one another, obtaining correct dosage for each cast part.
  • Another object of the present invention is to provide an apparatus and a method that by virtue of its particular constructive characteristics is capable of giving the greatest assurances of reliability and safety in use.
  • Another object of the present invention is to provide an apparatus and a method that can be obtained easily starting from commonly commercially available elements and materials and is also competitive from a merely economical standpoint.
  • the apparatus for manufacturing items made of aluminum, aluminum alloys, light alloys and the like comprises a platen, generally designated by the reference numeral 1, on which there is a lower die 2 with which an upper die 3 cooperates; said upper die can perform a translational motion toward and away from the lower die.
  • duct 10 for introducing liquid metal which arrives from below from a furnace 11 of the liquid metal which is preferably of the pressurized type; the duct 10 runs through the platen, where there are usual heating means 12, until it exits at the impressions 20 provided in the lower die.
  • the lower impression 20 has at least one concave portion 23 that allows to introduce therein a quantity of liquid metal that is a direct function of the geometry of the concave portion; therefore, by introducing the liquid metal and making it rise through the duct, by virtue of a pressing action applied by the furnace, it is possible to fill the concave regions or portions 23 with a quantity of liquid metal that in practice is dosed.
  • level sensors 30 it is possible to provide level sensors 30 to stop the rise of the liquid metal or it is optionally possible to preset the time and the pressure applied to the liquid metal so as to achieve dosed overflow of said liquid metal.
  • the level of the liquid metal is lowered again ( Figure 3), so as to provide precise dosage of the metal according to the position of the overflow ports 22 that form the region for the overflow of the liquid metal into the concave regions 23.
  • At least one male plug 8 is connected to the upper die 3, can move with respect to the upper die 3, and forms an upper impression 25, which in cooperation with the corresponding lower impression 20 forms the shape of the item being cast.
  • the specific example illustrates a toe cap 21 for safety shoes.
  • An important particularity of the invention consist in that after closing the upper die 3 onto the lower die 2 and after dosing the liquid metal, the piston 8, which moves with respect to the upper die 3, closes the port 24 for connection to the liquid metal input duct 10, thus achieving clear separation with respect to the column of liquid metal, which moreover, to perform dosage, had been made to descend in the channel 10, so as to place the free surface of the liquid preferably at the heated region.
  • the movement of the male plug 8 with respect to the upper die 3 applies pressure to the liquid metal, producing a particular compaction of said metal and thus obtaining parts that have considerable structural uniformity and improved mechanical strength.
  • the dosage of the metal is substantially produced by the shape of the lower impression and more particularly by the concave portion of the lower portion, allows to arrange around the same input channel impressions that are different one another and in which the liquid metal is always dosed correctly, said dosage being possibly different in each impression.
  • the male plug in practice forms a flow control element that closes the port for connection to the liquid metal input duct, avoiding the formation of sprue and also generating pressure on the liquid metal undergoing solidification, which helps to obtain a product with high-level structural and mechanical characteristics.
  • the materials used, as well as the contingent shapes and dimensions may be any according to requirements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Conductive Materials (AREA)
  • Medicinal Preparation (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (9)

  1. Vorrichtung zur Herstellung von Gegenständen aus Aluminium, Aluminiumlegierungen, Leichtmetalllegierungen oder dergleichen, umfassend einen Pressentisch (1), ein Untergesenk (2) und wengistens ein Obergesenk (3), einen Kanal (10) für die Zuführung des flüssigen Metalls, der mit einem Schmelzofen (11) verbunden ist und der von unten durch den Pressentisch (1) hindurchläuft und zu dem Untergesenk (2) führt, welches wenigstens einen unteren Formraum (20) bildet, der wenigstens einen konkaven Teil (23) für die Aufnahme einer Menge des flüssigen Metalls aufweist, wobei wenigstens ein Stempel (8) dem Obergesenk (3) zugeordnet und relativ zu diesem beweglich ist und einen oberen Formraum (25) bildet, der mit dem wenigstens einen unteren Formraum (20) in Verbindung gebracht werden kann, um die Form des zu gießenden Gegenstandes (21) vorzugeben, wobei das wenigstens eine Obergesenk (3) mit dem Untergesenk (2) verriegelbar ist und der wenigstens eine Stempel (8) so ausgebildet ist, daß er die Form abschließt und als ein Mengenregelelement für die Öffnung (24) wirkt, die eine Verbindung zu dem Zuführkanal (10) herstellt, dadurch gekennzeichnet, daß wenigstens eine Überströmöffnung (22) vorgesehen ist, die den Zuführkanal (10) mit dem wenigstens einen konkaven Teil (23) verbindet, so daß in diesen eine bestimmte Menge des flüssigen Metalls übergeleitet werden kann, welche durch den Überlauf dosiert wird und eine direkte Funktion der Geometrie des konkaven Teils (23) ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß in dem Untergesenk (2) mehrere untere Formräume (20) ausgebildet sind, die jeweils einzeln mit dem Zuführkanal (10) für die Zufuhr des flüssigen Metalls verbunden sind.
  3. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Pegelsensoren (30) zur Steuerung des in dem Zuführkanal (10) aufsteigenden, flüssigen Metalls bis zu einem Pegel vorgesehen sind, der über dem Pegel der Verbindungsöffnung (24) liegt, wodurch die Überströmmenge des flüssigen Metalls gesteuert wird.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß diese zur Dosierung des flüssigen Metalls durch den Überlauf an der Verbindungsöffnung (24) ausgebildet ist.
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Pegel des flüssigen Metalls in dem Zuführkanal (10) steuerbar ist durch Einstellung der Zeit und des Druckes innerhalb des Schmelzofens.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß durch den Abschluß des jeweiligen unteren Formraumes (20) im Untergesenk (2) durch den Stempel (8) Druck auf das in den konkaven Teil (23) eingebrachte, flüssige Metall ausgeübt wird.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß durch die unteren Formräume (20) in dem Untergesenk (2) voneinander unabhängige Dosierungen des flüssigen Metalls bewirkt werden.
  8. Verfahren zur Herstellung von Gegenständen aus Aluminium, Aluminiumlegierungen, Leichtmetalllegierungen oder dergleichen mit einer Vorrichtung nach Anspruch 1, bei dem die folgenden Schritte vorgesehen sind:
    Verschluß des wenigstens einen Obergesenks (3) relativ zum Untergesenk (2),
    Dosierung einer Flüssigmetallmenge durch Zuführen des flüssigen Metalls in den wenigstens einen konkaven Teil (23) durch Überlauf des flüssigen Metalls über wenigstens eine Überströmöffnung (22), welche den konkaven Teil (23) mit dem Zuführkanal (10) verbindet, wobei die Überströmmenge eine direkte Funktion der Geometrie des konkaven Teils (23) ist,
    Verschieben des wenigstens einen Stempels (8) zum Abschließen der Form, wobei der Stempel als ein Mengenregelelement für die Öffnung (24) dient, welche eine Verbindung zu dem Zuführkanal (10) herstellt.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß für die Dosierung die folgenden Schritte vorgesehen sind:
    Steuerung des Anstiegs und des Pegels des unter Druck stehenden Flüssigmetalls innerhalb des Zuführkanals (10),
    nach dem Füllen des wenigstens einen konkaven Teils (23) mit der dosierten Überströmmenge des Flüssigmetalls Absenken des Pegels des flüssigen Metalls im Zuführkanal (10).
EP03737299A 2002-02-07 2003-01-31 Vorrichtung und verfahren zur herstellung von gegenständen aus aluminiumlegierungen oder leichtmetalllegierungen Expired - Lifetime EP1472027B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI20020223 2002-02-07
IT2002MI000223A ITMI20020223A1 (it) 2002-02-07 2002-02-07 Apparecchiatura per la realizzazione di oggetti in alluminio leghe dialluminio leghe leggere e simili
PCT/EP2003/001016 WO2003066254A1 (de) 2002-02-07 2003-01-31 Apparatus for manufacturing items made of aluminum, aluminum alloys, light alloys and the like

Publications (2)

Publication Number Publication Date
EP1472027A1 EP1472027A1 (de) 2004-11-03
EP1472027B1 true EP1472027B1 (de) 2005-12-28

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EP03737299A Expired - Lifetime EP1472027B1 (de) 2002-02-07 2003-01-31 Vorrichtung und verfahren zur herstellung von gegenständen aus aluminiumlegierungen oder leichtmetalllegierungen

Country Status (11)

Country Link
EP (1) EP1472027B1 (de)
CN (1) CN1298462C (de)
AT (1) ATE314170T1 (de)
AU (1) AU2003244478A1 (de)
BR (1) BR0307545A (de)
DE (1) DE60303012T2 (de)
ES (1) ES2256755T3 (de)
HK (1) HK1077248A1 (de)
IT (1) ITMI20020223A1 (de)
TN (1) TNSN04144A1 (de)
WO (1) WO2003066254A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016123491B4 (de) * 2016-12-05 2019-12-24 Schuler Pressen Gmbh Gießvorrichtung, Presse und Verfahren zum Gießen eines Bauteils

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20020167A1 (it) * 2002-06-21 2003-12-22 Bbs Riva Spa Attrezzatura per realizzare oggetti in alluminio, leghe di alluminio,leghe leggere e simili, e procedimento attuato da detta attrezzatura
US20050167074A1 (en) * 2003-10-24 2005-08-04 Matteo Mongini Process and machine for producing metal alloy components
ITMI20032186A1 (it) * 2003-11-12 2005-05-13 Claudio Frulla Apparecchiatuira per lo stampaggio di oggetti in alluminio,
ITTO20070934A1 (it) 2007-12-21 2009-06-22 Solmar S A S Di Luisa Maria Ma Apparecchiatura per la fabbricazione di articoli di metallo, in particolare di lega leggera.
ES2819773T3 (es) * 2015-05-20 2021-04-19 Alustrategy S R L Mejoras relativas a equipos para la fabricación de artículos de aleación ligera o similares
ITUB20152405A1 (it) * 2015-07-22 2017-01-22 Hydromec S R L Procedimento per la realizzazione di oggetti in alluminio, leghe di alluminio, leghe leggere, ottone, bronzo e simili
CN113523230B (zh) * 2021-07-28 2022-06-24 威黎司模具技术（上海）有限公司 一种热流道系统锌合金压铸模

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DE597704C (de) * 1932-04-08 1934-05-29 Josef Polak Verfahren und Vorrichtung zum Betrieb von Pressgussmaschinen
DE3223797C2 (de) * 1982-06-25 1984-04-12 Fen Sagidovič Uljanovsk Abdulin Gießform zur Herstellung von Gußstücken durch Verdrängungsgießen
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IT1231211B (it) * 1989-08-24 1991-11-23 Tva Holding Procedimento per la colata a pressione controllata di metalli fusi, particolarmente leghe leggere di alluminio e di magnesio, e apparecchiatura per la sua esecuzione
DE4109793A1 (de) * 1991-03-26 1992-10-01 Bachmann Giesserei & Formen Verfahren zum giessen von metallen sowie vorrichtung zur durchfuehrung eines solchen verfahrens
JPH07100614A (ja) * 1993-09-30 1995-04-18 Kiriyuu Kikai Kk 竪型加圧鋳造機における注湯方法
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CN1093447C (zh) * 2000-09-27 2002-10-30 张有明 非金属型液锻或挤铸成形工艺及模具
CN2464482Y (zh) * 2000-12-22 2001-12-12 中国科学院金属研究所 一种挤压铸造薄壁半球型铸件的模具
ITMI20010949A1 (it) * 2001-05-09 2002-11-09 Claudio Frulla Apparecchiatura per la realizzazione di puntali per scarpe di sucurezza e simili in alluminio sue leghe e leghe leggere in genere nonche' pr
CN107072957B (zh) * 2014-11-26 2021-01-29 赢创运营有限公司 具有抵抗乙醇影响的药物或保健品组合物

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016123491B4 (de) * 2016-12-05 2019-12-24 Schuler Pressen Gmbh Gießvorrichtung, Presse und Verfahren zum Gießen eines Bauteils

Also Published As

Publication number Publication date
ITMI20020223A0 (it) 2002-02-07
HK1077248A1 (en) 2006-02-10
BR0307545A (pt) 2005-01-04
ITMI20020223A1 (it) 2003-08-07
ATE314170T1 (de) 2006-01-15
DE60303012D1 (de) 2006-02-02
WO2003066254A1 (de) 2003-08-14
ES2256755T3 (es) 2006-07-16
TNSN04144A1 (en) 2007-03-12
AU2003244478A1 (en) 2003-09-02
CN1628005A (zh) 2005-06-15
CN1298462C (zh) 2007-02-07
DE60303012T2 (de) 2006-07-20
EP1472027A1 (de) 2004-11-03

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