EP1779944B1 - Feeder head with plug for closing its entry - Google Patents

Feeder head with plug for closing its entry Download PDF

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Publication number
EP1779944B1
EP1779944B1 EP06022265A EP06022265A EP1779944B1 EP 1779944 B1 EP1779944 B1 EP 1779944B1 EP 06022265 A EP06022265 A EP 06022265A EP 06022265 A EP06022265 A EP 06022265A EP 1779944 B1 EP1779944 B1 EP 1779944B1
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EP
European Patent Office
Prior art keywords
feeder
opening
mould
stopper
arrangement according
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.)
Not-in-force
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EP06022265A
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German (de)
French (fr)
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EP1779944A1 (en
Inventor
Jürgen-Michael SCHÄFER
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GTP-SCHAEFER GIESSTECHNISCHE PRODUKTE GmbH
GTP Schaefer Giesstechnishe Produkte GmbH
Original Assignee
GTP-SCHAEFER GIESSTECHNISCHE PRODUKTE GmbH
GTP Schaefer Giesstechnishe Produkte GmbH
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Application filed by GTP-SCHAEFER GIESSTECHNISCHE PRODUKTE GmbH, GTP Schaefer Giesstechnishe Produkte GmbH filed Critical GTP-SCHAEFER GIESSTECHNISCHE PRODUKTE GmbH
Priority to PL06022265T priority Critical patent/PL1779944T3/en
Publication of EP1779944A1 publication Critical patent/EP1779944A1/en
Application granted granted Critical
Publication of EP1779944B1 publication Critical patent/EP1779944B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/088—Feeder heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
    • B22C9/084—Breaker cores

Definitions

  • the invention relates to a feeder assembly for use in a casting mold used in the casting of metals, comprising a feeder body having a feeder body of an exothermic and / or insulating material having a feeder opening for connecting the feeder volume with the mold cavity of the mold, wherein the feeder body directly is connected via the feed opening or indirectly with the interposition of a passage opening having a refractive core or a passage opening having molding with the mold cavity of the mold and the respective passage opening of the refractive core or molding with the feeder opening is aligned, wherein in the connection between the mold cavity of the mold and the feeder volume a component consisting of a material dissolving under the action of heat is arranged.
  • a feeder arrangement with the aforementioned features is known from DE 29817471 U1 known; the feeder body described therein may be molded as such into a mold or including a breaker core to form a breaker edge for the removal of the so-called feeder remainder between the feeder body and the mold surface.
  • the same purpose is served by a DE 200 12 425 U1 known hat-shaped molding made of metal with a correspondingly arranged passage opening.
  • a feeder arrangement is according to the DE 298 17 471 U1 a disc of a material which can be destroyed by the action of heat from the metal flowing out of the casting mold to the feed volume of the feeder insert, which material is in each case firmly connected to the feeder body and / or the associated break core. If such a feeder is to be used with the use of an impression mandrel as a centering device, in particular in the case of mechanically operating molding machines, a corresponding passage opening for the centering means is formed in the disk.
  • the known feeder arrangement has the disadvantage that the closed disc permanently connected to the feeder body and / or the break core already prevents the ingress of casting gases into the feeder volume, but the feeder equipped therewith is not used in many application cases when forming the feeder can come. As far as the disc has a passage opening for a centering, the access of the casting gases is no longer hindered.
  • the invention is therefore based on the object, a feeder arrangement with the from DE 298 17 471 U1 known generic features while avoiding the aforementioned disadvantages to be further improved.
  • the invention provides that the component is designed as a separate plug which is included in the scope of supply of the feeder arrangement and which can be inserted into the mold opening or the passage opening of the breaker core or molded part subsequent to molding of the feeder body into the casting mold.
  • the component is designed as belonging to the delivery of the feeder arrangement separate stopper, which can be placed on the mold body forming the mold prior to molding of the feeder body and by placing the feeder body in its the feeder opening or the passage opening of the refractive core or molded part occlusive Position is available.
  • the plug initially prevents the entry of the casting gases into the feeder volume, so that the way into the feeder volume is only released when the liquid metal has come into contact with the stopper and has dissolved this.
  • the harmful effects of premature entry of casting gases are avoided in the feeder volume.
  • the invention is applicable to both feeder arrangements in which by means of so-called hand molding of the feeder body is inserted by hand directly into the mold, in which case the stopper placed on the model body and the feeder body is placed such that the plug closes the feeder opening ,
  • the feeder body is formed by machine, including a breaker core or a corresponding shaped body, the stopper is inserted in the connection to the forming process in the exposed after removal of the model body from the mold openings.
  • the plug is held in a form-fitting manner in the opening receiving it.
  • the plug is provided on its outside with the edge of the opening engaging behind form-fitting designs.
  • the plug is held in the receiving opening it frictionally.
  • the plug has a conical shape, so that the plug is inserted with appropriate force into the associated opening and defines itself in it due to its conical shape. It goes without saying that plugs which can be fixed in a form-fitting manner via separate designs can also have a conical shape.
  • the plug consists of a material which can be gasified by the action of heat, for example a suitable plastic, in particular polystyrene.
  • the plug may also consist of a material which melts under the action of heat, preferably of a suitable metal.
  • This metal can be in his Composition matched to the processed in the mold alloy. It can be provided that the metal stopper is formed thin-walled to ensure a correspondingly rapid melting.
  • FIGURE shows a feeder arrangement with a plug for closing the inlet opening in a schematic representation.
  • the feeder insert designated by 10 has a feeder body 11 which comprises a wall region 13 enclosing a feeder volume 14 and a cover 12.
  • the feeder body 11 has an outer surface 16 and an inner surface 15 of the wall region 13 enclosing the feeder volume 14 and a bottom surface 17 in which a feeder opening 18 is formed.
  • a metallic molding 20 which has a hat-shaped shape.
  • the hat-shaped part 20 is preferably glued with a circumferential collar 21 with the bottom surface 17 of the feeder body 11 and projects outwardly with a ring 22, wherein in the hat-shaped part 20 closing lid surface 23, a passage opening 24 is formed.
  • Such a feeder arrangement is formed into a casting mold by placing the feeder arrangement with feeder body 11 and molded part 20, for example, on a spring mandrel attached to a model body, the spring mandrel passes through the passage opening 24 and extends to in the feeder volume 14 of the feeder body 11; Thus, during the shaping of the feeder arrangement, the feeder body 11 is centered with the molded part 20 on the model body.
  • Part of the feeder arrangement is further a plug 25, which belongs to the scope of supply of the feeder arrangement and is matched in its dimensions to the respective opening to be closed.
  • the dimension of the plug 25 is matched to the passage opening 24 of the molding 20;
  • the plug 25 is formed with a slightly conical shape, so that after pressing the plug 25 into the passage opening 24 until the bearing of a support ring 26 on the cover surface 23 of the molding 20, the plug 25 is frictionally fixed in the passage opening 24.
  • the stopper 25 must be matched to the dimension of the feeder opening 18 so that the stopper 25 can be inserted into the feeder opening 18 either after the feeder has been formed or else in the case of hand-forming installations can be fixed to the placement of the feeder on the model body, so that the plug 25 closes the feeder opening 18 during placement of the feeder body 11.
  • the feeder arrangement comprises, as an alternative to the molded part 20 shown in the drawing, a breaker core, as it is known from US Pat DE 42 19 632 A is known.

Abstract

Feeder comprises a stopper (25) made from a material which dissolves on heating and inserted into the casting mold in a feeder opening (18) or through-opening (24) on the feeder body (11).

Description

Die Erfindung betrifft eine Speiseranordnung zum Einsatz in einer beim Gießen von Metallen verwendeten Gießform, bestehend aus einem ein Speiservolumen aufweisenden Speiserkorpus aus einem exothermen und/oder isolierenden Material, der eine Speiseröffnung zum Verbinden des Speiservolumens mit dem Formhohlraum der Gießform aufweist, wobei der Speiserkorpus unmittelbar über die Speiseröffnung oder mittelbar unter Zwischenschaltung eines eine Durchtrittsöffnung aufweisenden Brechkerns oder eines eine Durchtrittsöffnung aufweisenden Formteils mit dem Formhohlraum der Gießform verbunden ist und die jeweilige Durchtrittsöffnung von Brechkern oder Formteil mit der Speiseröffnung fluchtet, wobei in der Verbindung zwischen dem Formhohlraum der Gießform und dem Speiservolumen ein aus einem sich unter Hitzeeinwirkung auflösenden Werkstoff bestehendes Bauteil angeordnet ist.The invention relates to a feeder assembly for use in a casting mold used in the casting of metals, comprising a feeder body having a feeder body of an exothermic and / or insulating material having a feeder opening for connecting the feeder volume with the mold cavity of the mold, wherein the feeder body directly is connected via the feed opening or indirectly with the interposition of a passage opening having a refractive core or a passage opening having molding with the mold cavity of the mold and the respective passage opening of the refractive core or molding with the feeder opening is aligned, wherein in the connection between the mold cavity of the mold and the feeder volume a component consisting of a material dissolving under the action of heat is arranged.

Eine Speiseranordnung mit den vorgenannten Merkmalen ist aus der DE 29817471 U1 bekannt; der darin beschriebene Speiserkorpus kann als solcher in eine Gießform eingeformt werden oder unter Einschluss eines Brechkerns, um eine Brechkante für die Entfernung des sogenannten Speiserrestes zwischen dem Speiserkorpus und der Formoberfläche auszubilden. Dem gleichen Zweck dient auch ein aus der DE 200 12 425 U1 bekanntes hutförmiges Formteil aus Metall mit einer entsprechend angeordneten Durchtrittsöffnung. Bei einer derartigen Speiseranordnung ist gemäß der DE 298 17 471 U1 eine Scheibe aus einem durch die Wärmeeinwirkung des aus der Gießform zum Speiservolumen des Speisereinsatzes strömenden Metalls zerstörbaren Material vorgesehen, die jeweils fest mit dem Speiserkorpus und/oder dem zugehörigen Brechkern verbunden ist. Soweit ein derartiger Speiser unter Einsatz eines Abformdorns als Zentriermittel insbesondere bei maschinell arbeitenden Formanlagen zum Einsatz kommen soll, ist in der Scheibe eine entsprechende Durchtrittsöffnung für das Zentriermittel ausgebildet.A feeder arrangement with the aforementioned features is known from DE 29817471 U1 known; the feeder body described therein may be molded as such into a mold or including a breaker core to form a breaker edge for the removal of the so-called feeder remainder between the feeder body and the mold surface. The same purpose is served by a DE 200 12 425 U1 known hat-shaped molding made of metal with a correspondingly arranged passage opening. In such a feeder arrangement is according to the DE 298 17 471 U1 a disc of a material which can be destroyed by the action of heat from the metal flowing out of the casting mold to the feed volume of the feeder insert, which material is in each case firmly connected to the feeder body and / or the associated break core. If such a feeder is to be used with the use of an impression mandrel as a centering device, in particular in the case of mechanically operating molding machines, a corresponding passage opening for the centering means is formed in the disk.

Es hat sich herausgestellt, dass beim Eingießen des flüssigen Metalls in die Gießform sich heiße Gießgase bilden können, die von dem flüssigen Metall in dem Formhohlraum verdrängt werden und dadurch in das Speiservolumen eintreten und in diesem unter Druck anstehen. Je nach der Materialzusammensetzung des Speiserkorpus ist nicht auszuschließen, dass es zu einer frühzeitigen, unter Umständen explosionsartigen Zündung des Speisers kommt, so dass der Speiser zumindest teilweise zerstört wird und anschließend nicht mehr in dem erforderlichen Umfang funktionstüchtig ist. Insoweit ist mit der bekannten Speiseranordnung der Nachteil verbunden, dass die fest mit dem Speiserkorpus und/oder dem Brechkern verbundene geschlossene Scheibe zwar bereits den Zutritt von Gießgasen in das Speiservolumen verhindert, jedoch die damit ausgerüsteten Speiser beim Aufformen des Speisers in vielen Anwendungsfällen nicht zum Einsatz kommen können. Soweit die Scheibe eine Durchtrittsöffnung für ein Zentriermittel aufweist, ist der Zutritt der Gießgase nicht mehr gehindert.It has been found that when the liquid metal is poured into the casting mold, hot casting gases can form which are displaced by the liquid metal in the molding cavity and thereby enter and are pressurized in the feeder volume. Depending on the material composition of the feeder body is not excluded that it comes to an early, possibly explosive ignition of the feeder, so that the feeder is at least partially destroyed and is then no longer functional to the extent required. In that regard, the known feeder arrangement has the disadvantage that the closed disc permanently connected to the feeder body and / or the break core already prevents the ingress of casting gases into the feeder volume, but the feeder equipped therewith is not used in many application cases when forming the feeder can come. As far as the disc has a passage opening for a centering, the access of the casting gases is no longer hindered.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Speiseranordnung mit den aus der DE 298 17 471 U1 bekannten gattungsgemäßen Merkmalen unter Vermeidung der vorgenannten Nachteile weiter zu verbessern.The invention is therefore based on the object, a feeder arrangement with the from DE 298 17 471 U1 known generic features while avoiding the aforementioned disadvantages to be further improved.

Die Lösung dieser Aufgabe ergibt sich einschließlich vorteilhafter Ausgestaltungen und Weiterbildungen der Erfindung aus dem Inhalt der Patentansprüche, welche dieser Beschreibung nachgestellt sind.The solution to this problem arises, including advantageous refinements and developments of the invention from the content of the claims, which are adjusted to this description.

Die Erfindung sieht in einer ersten Alternative vor, dass das Bauteil als zum Lieferumfang der Speiseranordnung gehörender separater und im Anschluss an das Einformen des Speiserkorpus in die Gießform in die Speiseröffnung oder die Durchtrittsöffnung von Brechkern oder Formteil einsetzbarer Stopfen ausgebildet ist. Alternativ kann vorgesehen sein, dass das Bauteil als zum Lieferumfang der Speiseranordnung gehörender separater Stopfen ausgebildet ist, der vor dem Einformen des Speiserkorpus auf dem die Gießform ausbildenden Modellkörper aufsetzbar und durch das Aufsetzen des Speiserkorpus in seine die Speiseröffnung oder die Durchtrittsöffnung von Brechkern oder Formteil verschließende Stellung verbringbar ist.In a first alternative, the invention provides that the component is designed as a separate plug which is included in the scope of supply of the feeder arrangement and which can be inserted into the mold opening or the passage opening of the breaker core or molded part subsequent to molding of the feeder body into the casting mold. Alternatively it can be provided that the component is designed as belonging to the delivery of the feeder arrangement separate stopper, which can be placed on the mold body forming the mold prior to molding of the feeder body and by placing the feeder body in its the feeder opening or the passage opening of the refractive core or molded part occlusive Position is available.

Mit der Erfindung ist der Vorteil verbunden, dass der Stopfen zunächst den Eintritt der Gießgase in das Speiservolumen verhindert, so dass der Weg in das Speiservolumen erst freigegeben wird, wenn das flüssige Metall mit dem Stopfen in Kontakt gekommen ist und diesen aufgelöst hat. Damit sind die schädlichen Auswirkungen eines vorzeitigen Eintritts von Gießgasen in das Speiservolumen vermieden.With the invention has the advantage that the plug initially prevents the entry of the casting gases into the feeder volume, so that the way into the feeder volume is only released when the liquid metal has come into contact with the stopper and has dissolved this. Thus, the harmful effects of premature entry of casting gases are avoided in the feeder volume.

Die Erfindung ist dabei sowohl für Speiseranordnungen anwendbar, bei denen im Wege des sogenannten Handformens der Speiserkorpus von Hand unmittelbar in die Gießform eingesetzt wird, wobei in diesem Fall der Stopfen auf dem Modellkörper aufgesetzt und der Speiserkorpus derart aufgesetzt wird, dass der Stopfen dessen Speiseröffnung verschließt. Soweit bei Formanlagen der Speiserkorpus unter Einschluß eines Brechkerns bzw. eines entsprechenden Formkörpers maschinell eingeformt wird, wird der Stopfen im Anschluß an den Formvorgang in die nach Entnahme des Modellkörpers aus der Gießform freiliegenden Durchtrittsöffnungen eingesteckt.The invention is applicable to both feeder arrangements in which by means of so-called hand molding of the feeder body is inserted by hand directly into the mold, in which case the stopper placed on the model body and the feeder body is placed such that the plug closes the feeder opening , Insofar as in mold systems the feeder body is formed by machine, including a breaker core or a corresponding shaped body, the stopper is inserted in the connection to the forming process in the exposed after removal of the model body from the mold openings.

Nach einem Ausführungsbeispiel der Erfindung ist vorgesehen, dass der Stopfen in der ihn aufnehmenden Öffnung formschlüssig gehalten ist. Hierzu kann beispielsweise vorgesehen sein, dass der Stopfen auf seiner Außenseite mit den Rand der Öffnung hintergreifenden Formschlußgestaltungen versehen ist.According to one embodiment of the invention, it is provided that the plug is held in a form-fitting manner in the opening receiving it. For this purpose, for example, be provided that the plug is provided on its outside with the edge of the opening engaging behind form-fitting designs.

Alternativ kann vorgesehen sein, dass der Stopfen in der ihn aufnehmenden Öffnung kraftschlüssig gehalten ist. Hierzu kann vorgesehen sein, dass der Stopfen eine konische Form aufweist, so dass der Stopfen mit entsprechender Kraft in die zugeordnete Öffnung eingesteckt wird und sich aufgrund seiner konischen Form darin festlegt. Selbstverständlich können auch über gesonderte Gestaltungen formschlüssig festzulegende Stopfen eine konische Form aufweisen.Alternatively it can be provided that the plug is held in the receiving opening it frictionally. For this purpose, it may be provided that the plug has a conical shape, so that the plug is inserted with appropriate force into the associated opening and defines itself in it due to its conical shape. It goes without saying that plugs which can be fixed in a form-fitting manner via separate designs can also have a conical shape.

Nach einem Ausführungsbeispiel besteht der Stopfen aus einem unter Hitzeeinwirkung vergasbaren Material, beispielsweise einem geeigneten Kunststoff, insbesondere Styropor.According to one embodiment, the plug consists of a material which can be gasified by the action of heat, for example a suitable plastic, in particular polystyrene.

Gemäß einem alternativen Ausführungsbeispiel kann der Stopfen auch aus einem unter Hitzeeinwirkung aufschmelzenden Material bestehen, vorzugsweise aus einem geeigneten Metall. Dieses Metall kann in seiner Zusammensetzung auf die in der Gießform verarbeitete Legierung abgestimmt sein. Dabei kann vorgesehen sein, dass der aus Metall bestehende Stopfen dünnwandig ausgebildet ist, um ein entsprechend schnelles Aufschmelzen sicherzustellen.According to an alternative embodiment, the plug may also consist of a material which melts under the action of heat, preferably of a suitable metal. This metal can be in his Composition matched to the processed in the mold alloy. It can be provided that the metal stopper is formed thin-walled to ensure a correspondingly rapid melting.

In der Zeichnung ist ein Ausführungsbeispiel wiedergegeben, welches nachstehend beschrieben ist. Die einzige Figur zeigt eine Speiseranordnung mit einem Stopfen zum Verschließen der Eintrittsöffnung in einer schematischen Darstellung.In the drawing, an embodiment is shown, which is described below. The single FIGURE shows a feeder arrangement with a plug for closing the inlet opening in a schematic representation.

Die Zeichnung baut auf dem in der eingangs genannten DE 201 12 425 U1 dargestellten Speisereinsatz auf, der mittelbar unter Zwischenschaltung eines Formteiles mit dem Formhohlraum der Gießform zu verbinden ist. Im Einzelnen weist dabei der mit 10 bezeichnete Speisereinsatz einen Speiserkorpus 11 auf, der einen ein Speiservolumen 14 umschließenden Wandbereich 13 und einen Deckel 12 umfasst. Der Speiserkorpus 11 hat eine Außenfläche 16 und eine das Speiservolumen 14 umschließende Innenfläche 15 des Wandbereichs 13 sowie eine Bodenfläche 17, in der eine Speiseröffnung 18 ausgebildet ist.The drawing is based on the one mentioned in the beginning DE 201 12 425 U1 illustrated feeder insert, which is to be indirectly connected with the interposition of a molded part with the mold cavity of the mold. In detail, the feeder insert designated by 10 has a feeder body 11 which comprises a wall region 13 enclosing a feeder volume 14 and a cover 12. The feeder body 11 has an outer surface 16 and an inner surface 15 of the wall region 13 enclosing the feeder volume 14 and a bottom surface 17 in which a feeder opening 18 is formed.

An der Unterseite des Speisereinsatzes und mit der Bodenfläche 17 vorzugsweise durch Klebung verbunden ist ein metallisches Formteil 20, welches eine hutförmige Gestalt aufweist. Das hutförmige Formteil 20 ist mit einem umlaufenden Kragen 21 mit der Bodenfläche 17 des Speiserkorpus 11 vorzugsweise verklebt und springt mit einem Kranz 22 nach außen vor, wobei in der das hutförmige Formteil 20 schließenden Deckelfläche 23 eine Durchtrittsöffnung 24 ausgebildet ist.At the bottom of the feeder insert and with the bottom surface 17 is preferably connected by gluing a metallic molding 20, which has a hat-shaped shape. The hat-shaped part 20 is preferably glued with a circumferential collar 21 with the bottom surface 17 of the feeder body 11 and projects outwardly with a ring 22, wherein in the hat-shaped part 20 closing lid surface 23, a passage opening 24 is formed.

Wird eine derartige Speiseranordnung in eine Gießform eingeformt, indem die Speiseranordnung mit Speiserkorpus 11 und Formteil 20 beispielsweise auf einen an einem Modellkörper angebrachten Federdorn aufgesetzt wird, tritt der Federdorn durch die Durchtrittsöffnung 24 hindurch und reicht bis in das Speiservolumen 14 des Speiserkorpus 11; damit ist während des Einformens der Speiseranordnung der Speiserkorpus 11 mit Formteil 20 an dem Modellkörper zentriert.If such a feeder arrangement is formed into a casting mold by placing the feeder arrangement with feeder body 11 and molded part 20, for example, on a spring mandrel attached to a model body, the spring mandrel passes through the passage opening 24 and extends to in the feeder volume 14 of the feeder body 11; Thus, during the shaping of the feeder arrangement, the feeder body 11 is centered with the molded part 20 on the model body.

Bestandteil der Speiseranordnung ist weiterhin ein Stopfen 25, der zum Lieferumfang der Speiseranordnung gehört und in seinen Abmessungen auf die jeweils zu verschließende Öffnung abgestimmt ist. Bei dem dargestellten Ausführungsbeispiel ist die Abmessung des Stopfens 25 auf die Durchtrittsöffnung 24 des Formteils 20 abgestimmt; hierzu ist der Stopfen 25 mit einer leicht konischen Form ausgebildet, so dass nach dem Eindrücken des Stopfens 25 in die Durchtrittsöffnung 24 bis zur Anlage eines Auflagerkranzes 26 an der Deckelfläche 23 des Formteils 20 der Stopfen 25 kraftschlüssig in der Durchtrittsöffnung 24 festgelegt ist.Part of the feeder arrangement is further a plug 25, which belongs to the scope of supply of the feeder arrangement and is matched in its dimensions to the respective opening to be closed. In the illustrated embodiment, the dimension of the plug 25 is matched to the passage opening 24 of the molding 20; For this purpose, the plug 25 is formed with a slightly conical shape, so that after pressing the plug 25 into the passage opening 24 until the bearing of a support ring 26 on the cover surface 23 of the molding 20, the plug 25 is frictionally fixed in the passage opening 24.

Kommt der Speiserkorpus 11 beispielsweise ohne das Formteil 20 zum Einsatz, so muß der Stopfen 25 entsprechend auf die Abmessung der Speiseröffnung 18 abgestimmt sein, so dass der Stopfen 25 entweder nach dem Einformen des Speisers in die Speiseröffnung 18 einsetzbar ist oder aber auch bei Handformanlagen vor dem Aufsetzen des Speisers auf dem Modellkörper fixierbar ist, so dass der Stopfen 25 bei dem Aufsetzen des Speiserkorpus 11 die Speiseröffnung 18 verschließt.If the feeder body 11 is used, for example, without the molded part 20, then the stopper 25 must be matched to the dimension of the feeder opening 18 so that the stopper 25 can be inserted into the feeder opening 18 either after the feeder has been formed or else in the case of hand-forming installations can be fixed to the placement of the feeder on the model body, so that the plug 25 closes the feeder opening 18 during placement of the feeder body 11.

Entsprechendes gilt, wenn die Speiseranordnung alternativ zu dem in der Zeichnung dargestellten Formteil 20 einen Brechkern umfasst, wie er aus der DE 42 19 632 A bekannt ist.The same applies if the feeder arrangement comprises, as an alternative to the molded part 20 shown in the drawing, a breaker core, as it is known from US Pat DE 42 19 632 A is known.

Claims (11)

  1. Feeder arrangement for use in a mould used to cast metals, consisting of a feeder body (11) formed from an exothermic and/or insulating material and having a feeder volume (14) and a feeder opening (18) for connecting the feeder volume (14) to the cavity of the mould, the feeder body (11) being connected to the cavity of the mould directly via the feeder opening (18) or indirectly via a breaker core positioned in between having a through-opening or via a mould part (20) positioned in between having a through-opening, and the respective through-opening (24) of the breaker core or the mould part (20) being aligned with the feeder opening (18), a component (25) consisting of a material which breaks down under the effect of heat being arranged in the connection between the cavity of the mould and the feeder volume (14), characterised in that the component is formed as a separate stopper (25) which belongs to the supply circumference of the feeder arrangement and can be inserted into the mould and into the feeder opening (18) or the through-opening (24) of the breaker core or the mould part (20) after the feeder body (11) has been moulded.
  2. Feeder arrangement for use in a mould used to cast metals, consisting of a feeder body (11) formed from an exothermic and/or insulating material and having a feeder volume (14) and a feeder opening (18) for connecting the feeder volume (14) to the cavity of the mould, the feeder body (11) being connected to the cavity of the mould directly via the feeder opening (18) or indirectly via a breaker core positioned in between having a through-opening or via a mould part (20) positioned in between having a through-opening, and the respective through-opening (24) of the breaker core or the mould part (20) being aligned with the feeder opening (18), a component (25) consisting of a material which breaks down under the effect of heat being arranged in the connection between the cavity of the mould and the feeder volume (14), characterised in that the component is formed as a separate stopper (25) which belongs to the supply circumference of the feeder arrangement, can be positioned on the pattern member forming the mould before the feeder body (11) is moulded and can be brought into the position in which it closes the feeder opening (18) or the through-opening (24) of the breaker core or the mould part (20) by positioning the feeder body (11).
  3. Feeder arrangement according to either claim 1 or claim 2, characterised in that the stopper (25) is retained with an interlocking fit in the opening (18, 24) in which it is received.
  4. Feeder arrangement according to claim 3, characterised in that the outer side of the stopper (25) is provided with interlocking configurations which engage the edge of the opening (18, 24) from behind.
  5. Feeder arrangement according to either claim 1 or claim 2, characterised in that the stopper (25) is retained with a non-positive fit in the opening (18, 24) in which it is received.
  6. Feeder arrangement according to any one of claims 1 to 5, characterised in that the stopper (25) has a conical shape.
  7. Feeder arrangement according to any one of claims 1 to 6, characterised in that the stopper (25) consists of a material which can turn to gas under the effect of heat.
  8. Feeder arrangement according to claim 7, characterised in that the stopper (25) consists of expandable polystyrene.
  9. Feeder arrangement according to any one of claims 1 to 6, characterised in that the stopper (25) consists of a material which melts under the effect of heat.
  10. Feeder arrangement according to claim 9, characterised in that the stopper (25) consists of a metal.
  11. Feeder arrangement according to claim 10, characterised in that the stopper (25) consisting of metal is formed so as to be thin-walled.
EP06022265A 2005-10-28 2006-10-25 Feeder head with plug for closing its entry Not-in-force EP1779944B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL06022265T PL1779944T3 (en) 2005-10-28 2006-10-25 Feeder head with plug for closing its entry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005017074U DE202005017074U1 (en) 2005-10-28 2005-10-28 Feeder for inserting into a casting mold during casting of metals comprises a stopper made from a material which dissolves on heating and inserted into the casting mold in a feeder opening or through-opening on the feeder body

Publications (2)

Publication Number Publication Date
EP1779944A1 EP1779944A1 (en) 2007-05-02
EP1779944B1 true EP1779944B1 (en) 2010-02-03

Family

ID=35530698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06022265A Not-in-force EP1779944B1 (en) 2005-10-28 2006-10-25 Feeder head with plug for closing its entry

Country Status (4)

Country Link
EP (1) EP1779944B1 (en)
AT (1) ATE456986T1 (en)
DE (2) DE202005017074U1 (en)
PL (1) PL1779944T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012105886B3 (en) * 2012-07-03 2013-12-19 GTP Schäfer Gießtechnische Produkte GmbH Introducing-mold feeder powder into feeder cavity of feeder assembly to casting mold for casting metals, comprises inserting feeder cavity into casting mold using opening, and positioning passage opening of breaker core into cavity
EP2792432A1 (en) * 2013-04-16 2014-10-22 Foseco International Limited Feeder element
WO2017007433A1 (en) * 2015-07-08 2017-01-12 Gündoğdu Muhittin Metal breaker conical core

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH571372A5 (en) * 1974-03-28 1976-01-15 Feichtinger Heinrich Sen Degassing melts during solidification in a mould - using gas bubbles and baffle-plate to circulate melt in feeder head
AU601315B2 (en) * 1988-01-30 1990-09-06 Foseco International Limited Moulds for metal casting and sleeves containing filters for use therein
DE29817471U1 (en) 1998-09-30 2000-05-11 Gtp Schaefer Giestechnische Pr Feeder insert with delay insert
DE20012425U1 (en) 2000-07-18 2001-02-15 Stetter Thomas Extension for scissors, tweezers or similar tools

Also Published As

Publication number Publication date
PL1779944T3 (en) 2010-10-29
DE202005017074U1 (en) 2005-12-29
EP1779944A1 (en) 2007-05-02
ATE456986T1 (en) 2010-02-15
DE502006006074D1 (en) 2010-03-25

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