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WO1999055477A1 - Procede et appareil de moulage dans des moules de sable - Google Patents

Procede et appareil de moulage dans des moules de sable Download PDF

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Publication number
WO1999055477A1
WO1999055477A1 PCT/DK1999/000222 DK9900222W WO9955477A1 WO 1999055477 A1 WO1999055477 A1 WO 1999055477A1 DK 9900222 W DK9900222 W DK 9900222W WO 9955477 A1 WO9955477 A1 WO 9955477A1
Authority
WO
WIPO (PCT)
Prior art keywords
mould
filling
closure member
moulds
duct
Prior art date
Application number
PCT/DK1999/000222
Other languages
English (en)
Inventor
Finn Kruse Jakobsen
Torben Hansen
Original Assignee
Georg Fischer Disa A/S
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 Georg Fischer Disa A/S filed Critical Georg Fischer Disa A/S
Priority to AU31388/99A priority Critical patent/AU3138899A/en
Publication of WO1999055477A1 publication Critical patent/WO1999055477A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C19/00—Components or accessories for moulding machines

Definitions

  • the present invention relates to a method of casting articles in sand moulds, said method being of the kind set forth in the preamble of claim 1.
  • the present invention also relates to an apparatus for carrying out the method of the invention.
  • This apparatus is of the kind set forth in the preambles of claims 13- 16, and, according to various aspects of the present invention, are characterized by the features set forth in the characterizing clauses of these claims 13-16, respectively.
  • Figures 5 and 6 show the relevant part of moulds having closure members according to a second and a third embodiment, respectively.
  • Figure 1 shows a part of a sand mould 1 , preferably one of a number of similar sand moulds forming a so-called mould string used in the mass production of cast metal objects, e.g. by using a combined mould-making and casting machine of the DISAMATIC® type.
  • the mould string extends and moves in a direction at right angles to the drawing.
  • the mould 1 comprises a filling duct in the form of a runner 2, the right-hand end of which is adapted to co-operate sealingly with a mouthpiece 3 on a metal pump 4 adapted to supply molten metal (not shown) under pressure to the runner 2, the latter leading into one or a number of mould cavities (not shown) formed in the mould 1.
  • the mould 1 comprises a closure member 5 extending from an outwardly open recess 6 in the side of the mould 1 facing the metal pump 4 to the runner 2, and can be pushed into the closing position shown in Figures 3 and 4 by a pusher arm 7 adapted to be reciprocated in a vertical or inclined direction by a suitable mechanism (not shown).
  • the right-hand end of the runner 2 is surrounded by a sealing element, in this exemplary embodiment in the form of a ring 8 adapted to make a liquid-tight seal of the connection between the mouthpiece 3 of the metal pump 4 and the runner 2, when the metal pump is brought into engagement as shown in Figure 2.
  • the sealing element can also have other shapes than that of a ring, provided that it can seal the connection between the mouthpiece 3 and the runner 2 outwardly.
  • the mould 1 has just arrived from the mould-making station, the latter comprising means, such as a core setter, for inserting the closure member 5, as well as the sealing ring 8, in the positions in Figure 1.
  • means such as a core setter
  • the actuating mechanism (not shown) for the pusher arm 7 is actuated to move the pusher arm into the position shown in Figure 3, thus pushing the closure member 5 into the closing position shown, thus closing the runner 2.
  • the pump may be withdrawn from the mould 1 to the position shown in Figure 4, so as to be in readiness for filling the next mould in succession.
  • the pusher arm 7 is withdrawn to its initial position shown in Figures 1 and 2, and the closure member 5 will remain in its closing position.
  • the pusher arm 7 is moved towards the right out of the recess 6 in order to allow this movement, being moved back into position as soon as the next mould is in the position shown for the mould 1.
  • the sealing ring 8 is preferably made of a material providing the best possible seal with the mouthpiece 3.
  • the sealing ring 8 not only provides a liquid-tight seal, but it also prevents direct contact between the mould 1 and the mouthpiece 3, thus avoiding contamination of the latter with particles of sand that can easily come loose from the mould. Further, because of its resilient properties, the sealing ring 8 is also capable of accommodating minor variations in the relative positions of the runner 2 and the mouthpiece 3, bearing in mind that the latter will have to co-operate with a great number of moulds passing through the filling station. Still further, because of its heat-insulating properties, the sealing ring 8 prevents molten metal from solidifying in contact with the mouthpiece 3 - otherwise, this could disturb the engagement of the latter with the sealing ring on the next mould. The movements and activities of the various parts are, of course, controlled by suitable automatic control equipment. Persons skilled in the art of automatic metal casting will know how to devise and construct such control equipment, for which reason it should not be necessary to describe it in detail in the present description.
  • Figures 5 and 6 illustrate two altered embodiments of the arrangement for closing the runner 2.
  • the plug-like closure member 5 shown in Figures 1-4 is replaced by a closure blade 9 adapted to be pushed into the closing position (not shown) by a pusher finger 10 attached to the pusher arm 7.
  • the closure blade 9 is inserted into the mould in the mould-making station, preferably by means of a core setter.
  • the mould 1 will arrive in the filling station without a closure member; this can be necessary if the mould-making station does not comprise a core setter or other equipment capable of inserting a closure member.
  • the closing function is provided by means of a closure blade 11 held temporarily by a gripper 12 secured to the pusher arm 7. With this arrangement, a new closure blade 11 will be inserted into the gripper 12, when the pusher arm 7 is in a position (not shown) away from the mould 1 , such as by a suitable control robot (also not shown).
  • closure member 5 is made from compacted core sand and the closure blades 9 and 11 are made from the same material as is used for casting, it will not be necessary to take special care for removing them from the metal having solidified in the ingate system and to be returned for re-melting surplus metal after extraction and liberation of the castings.
  • the closure member 5 is replaced by a water-cooled closure member, preferably attached to a movable member externally of the mould 1 , such as one similar to the pusher arm 7.
  • the water-cooled closure member is pulled out and away from the runner 2 as soon as the metal in the latter has solidified to an extent sufficient to prevent the metal closer to the mould cavity from flowing out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

L'invention porte sur un procédé de moulage dans des cavités (non représentées) pratiquées dans des moules de sable à l'aide d'une unité d'alimentation (4), permettant d'introduire le métal en fusion (non représenté) dans lesdites cavités par un canal (2) de coulée. L'innovation principale réside dans l'utilisation d'un joint élastique (annulaire (8) dans l'exemple représenté) fait de préférence d'un matériau thermoisolant constituant une barrière étanche aux liquides autour de la connexion reliant la gueule (3) de ladite unité (4) audit canal (2) quand ladite unité (4) est placée dans la position de remplissage (représentée). Le joint annulaire (8) empêche la contamination de la gueule par le sable du moule et la solidification du métal en fusion sur la gueule qui sinon n'assurerait pas correctement le remplissage du moule suivant de la série.
PCT/DK1999/000222 1998-04-27 1999-04-21 Procede et appareil de moulage dans des moules de sable WO1999055477A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31388/99A AU3138899A (en) 1998-04-27 1999-04-21 Method and apparatus for casting articles in sand moulds

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98107607.8 1998-04-27
EP19980107607 EP0951956B1 (fr) 1998-04-27 1998-04-27 Procédé et dispositif pour coulée dans les moules en sable

Publications (1)

Publication Number Publication Date
WO1999055477A1 true WO1999055477A1 (fr) 1999-11-04

Family

ID=8231829

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1999/000222 WO1999055477A1 (fr) 1998-04-27 1999-04-21 Procede et appareil de moulage dans des moules de sable

Country Status (6)

Country Link
EP (1) EP0951956B1 (fr)
AU (1) AU3138899A (fr)
DE (1) DE69800190T2 (fr)
DK (1) DK0951956T3 (fr)
ES (1) ES2150296T3 (fr)
WO (1) WO1999055477A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA02003746A (es) 1999-10-15 2002-08-30 Loramendi Sa Metodo de colada de metales en molde de arena verde y dispositivo de obturacion del canal de colada.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2295808A1 (fr) * 1974-12-24 1976-07-23 Pont A Mousson Procede et installation de coulee sous basse pression en moule en sable
CH595914A5 (en) * 1975-11-17 1978-02-28 Fischer Ag Georg Mould contg. a casting pipe
US4205721A (en) * 1977-03-23 1980-06-03 Georg Fischer Aktiengesellschaft Apparatus for filling a casting mold
SU1060304A1 (ru) * 1982-07-09 1983-12-15 Ордена Ленина,Ордена Трудового Красного Знамени Завод Транспортного Машиностроения Им.В.И.Ленина Металлопровод дл лить под низким давлением
WO1993011892A2 (fr) * 1991-12-07 1993-06-24 Baxi Partnership Limited Coulage d'alliages de metaux legers
JPH06234057A (ja) * 1993-02-10 1994-08-23 Aisin Takaoka Ltd 吸引鋳造装置
US5730203A (en) * 1994-05-27 1998-03-24 Georg Fischer Disa A/S Methods of closing the inlet in a mould after non-gravity casting with a non-ferrous alloy of green-sand moulds in a mould-string plant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8604386D0 (en) * 1986-02-21 1986-03-26 Cosworth Res & Dev Ltd Casting
GB9308833D0 (en) * 1993-04-29 1993-06-16 Baxi Partnership Ltd Improvements in or relating to sand moulds
DK77694A (da) * 1994-06-29 1995-12-30 Dansk Ind Syndikat Fremgangsmåde og indretning til ved udstøbning mod tyngdekraften af støbeforme, især vådsandforme, med navnlig letoxiderbare metaller eller metallegeringer af afslutte støbeprocessen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2295808A1 (fr) * 1974-12-24 1976-07-23 Pont A Mousson Procede et installation de coulee sous basse pression en moule en sable
CH595914A5 (en) * 1975-11-17 1978-02-28 Fischer Ag Georg Mould contg. a casting pipe
US4205721A (en) * 1977-03-23 1980-06-03 Georg Fischer Aktiengesellschaft Apparatus for filling a casting mold
SU1060304A1 (ru) * 1982-07-09 1983-12-15 Ордена Ленина,Ордена Трудового Красного Знамени Завод Транспортного Машиностроения Им.В.И.Ленина Металлопровод дл лить под низким давлением
WO1993011892A2 (fr) * 1991-12-07 1993-06-24 Baxi Partnership Limited Coulage d'alliages de metaux legers
JPH06234057A (ja) * 1993-02-10 1994-08-23 Aisin Takaoka Ltd 吸引鋳造装置
US5730203A (en) * 1994-05-27 1998-03-24 Georg Fischer Disa A/S Methods of closing the inlet in a mould after non-gravity casting with a non-ferrous alloy of green-sand moulds in a mould-string plant

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8432, Derwent World Patents Index; Class M22, AN 84-200586, XP002111005 *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 611 (M - 1708) 21 November 1994 (1994-11-21) *

Also Published As

Publication number Publication date
EP0951956B1 (fr) 2000-06-28
AU3138899A (en) 1999-11-16
EP0951956A1 (fr) 1999-10-27
DE69800190T2 (de) 2000-11-23
ES2150296T3 (es) 2000-11-16
DE69800190D1 (de) 2000-08-03
DK0951956T3 (da) 2000-11-06

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