EP1472027B1 - Appareil et procede servant a fabriquer des objets en aluminium, en alliages d'aluminium ou en alliages legers et autres - Google Patents

Appareil et procede servant a fabriquer des objets en aluminium, en alliages d'aluminium ou en alliages legers et autres 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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German (de)
English (en)
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EP1472027A1 (fr
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/fr
Application granted granted Critical
Publication of EP1472027B1 publication Critical patent/EP1472027B1/fr
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)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Claims (9)

  1. Appareil de fabrication d'articles constitués d'aluminium, d'alliages en aluminium, d'alliages légers et similaires, comprenant, sur un plateau (1), une filière inférieure (2) et au moins une filière supérieure (3), un conduit (10) destiné à introduire un métal liquide qui est raccordé à un fourneau (11), ledit conduit d'entrée de métal liquide (10) parvenant depuis le dessous à travers le plateau (1) et menant à l'intérieur de ladite filière inférieure (2), ladite filière inférieure (2) formant au moins un empreinte inférieure (20), qui comporte au moins une portion concave (23) destinée à introduire une quantité de métal liquide, au moins un bouchon mâle (8) étant associé à ladite filière supérieure (3), ledit au moins un bouchon mâle (8) étant adapté pour se déplacer par rapport à ladite filière supérieure (3) et formant une empreinte supérieure (25) qui peut être couplée à ladite au moins une impression inférieure (20) afin de déterminer la forme de l'article (21) qui est coulé, ladite au moins une filière supérieure (3) pouvant être fermée sur ladite filière inférieure (2) et ledit au moins un bouchon mâle (8) étant adapté pour fermer ladite forme et pour agir comme élément de régulation d'écoulement pour l'orifice (24) qui forme un raccord avec ledit conduit d'entrée (10), caractérisé en ce qu'il comprend en outre au moins un orifice de débordement (22) qui raccorde ledit conduit d'entrée (10) à ladite au moins une portion concave (23) pour y introduire une quantité de métal liquide qui est dosée par débordement et est une fonction directe de la géométrie de ladite portion concave (23).
  2. Appareil selon la revendication 1, caractérisé en ce qu'il comprend, sur ladite filière inférieure (2), de multiples empreintes inférieures (20) qui sont individuellement raccordées audit conduit d'entrée de métal liquide (10).
  3. Appareil selon les revendications précédentes, caractérisé en ce qu'il comprend des capteurs de niveau (30) destinés à réguler une élévation de métal liquide dans ledit conduit d'entrée (10) à un niveau qui est supérieur au niveau dudit orifice de raccord (24) pour réguler le débordement de métal liquide.
  4. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est adapté pour le dosage dudit métal liquide par débordement par rapport audit orifice de raccord (24).
  5. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que le niveau du métal liquide dans ledit conduit d'entrée du métal liquide (10) peut être régulé en fixant des valeurs de temps et de pression à l'intérieur dudit fourneau.
  6. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que la fermeture dudit bouchon mâle (8) sur l'empreinte inférieure (20) correspondante de ladite filière inférieure (2) est appropriée pour appliquer une pression au métal liquide introduit dans ladite portion concave.
  7. Appareil selon une ou plusieurs des revendications précédentes, caractérisé en ce que lesdites empreintes inférieures (20) formées dans ladite filière inférieure (2) sont adaptées pour fournir des dosages de métal liquide indépendamment les unes des autres.
  8. Procédé de fabrication d'articles constitués d'aluminium, d'alliages d'aluminium, d'alliages légers et similaires avec un appareil selon la revendication 1, le procédé comprenant les étapes consistant à :
    fermer ladite au moins une filière supérieure (3) sur ladite filière inférieure (2) ;
    doser une quantité de métal liquide à son introduction dans ladite au moins une portion concave (23) à l'aide d'un débordement du métal liquide par rapport à au moins un orifice de débordement (22) qui raccorde la portion concave (23) audit conduit d'entrée (10), la quantité de débordement dosée étant une fonction directe de la géométrie de ladite portion concave (23) ; et
    déplacer ledit au moins un bouchon mâle (8) pour fermer ladite forme et pour agir comme élément de régulation d'écoulement pour l'orifice (24) qui forme un raccord avec ledit conduit d'entrée (10).
  9. Procédé selon la revendication 8, dans lequel le dosage comprend les étapes consistant à : réguler l'élévation et le niveau de métal liquide sous pression dans le conduit d'entrée (10) ; et, lors du remplissage de la au moins une portion concave (23) avec la quantité de débordement dosée de métal liquide, abaisser le niveau du métal liquide dans le conduit d'entrée (10).
EP03737299A 2002-02-07 2003-01-31 Appareil et procede servant a fabriquer des objets en aluminium, en alliages d'aluminium ou en alliages legers et autres Expired - Lifetime EP1472027B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT2002MI000223A ITMI20020223A1 (it) 2002-02-07 2002-02-07 Apparecchiatura per la realizzazione di oggetti in alluminio leghe dialluminio leghe leggere e simili
ITMI20020223 2002-02-07
PCT/EP2003/001016 WO2003066254A1 (fr) 2002-02-07 2003-01-31 Appareil servant a fabriquer des objets en aluminium, en alliages d'aluminium ou en alliages legers et autres

Publications (2)

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

Family

ID=11449131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03737299A Expired - Lifetime EP1472027B1 (fr) 2002-02-07 2003-01-31 Appareil et procede servant a fabriquer des objets en aluminium, en alliages d'aluminium ou en alliages legers et autres

Country Status (11)

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

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
CA2485846A1 (fr) * 2003-10-24 2005-04-24 Alcox Sarl Procede et machine pour la production de composants en alliage metallique
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.
WO2016185424A1 (fr) * 2015-05-20 2016-11-24 Alustrategy S.R.L. Améliorations apportées à des équipements pour la fabrication d'articles en alliage léger ou similaire
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
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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
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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
ATE314170T1 (de) 2006-01-15
AU2003244478A1 (en) 2003-09-02
ITMI20020223A1 (it) 2003-08-07
ES2256755T3 (es) 2006-07-16
CN1298462C (zh) 2007-02-07
EP1472027A1 (fr) 2004-11-03
DE60303012D1 (de) 2006-02-02
TNSN04144A1 (en) 2007-03-12
HK1077248A1 (en) 2006-02-10
BR0307545A (pt) 2005-01-04
CN1628005A (zh) 2005-06-15
WO2003066254A1 (fr) 2003-08-14
DE60303012T2 (de) 2006-07-20
ITMI20020223A0 (it) 2002-02-07

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