EP1446249A2 - Feeder insert with protective cap - Google Patents

Feeder insert with protective cap

Info

Publication number
EP1446249A2
EP1446249A2 EP02790401A EP02790401A EP1446249A2 EP 1446249 A2 EP1446249 A2 EP 1446249A2 EP 02790401 A EP02790401 A EP 02790401A EP 02790401 A EP02790401 A EP 02790401A EP 1446249 A2 EP1446249 A2 EP 1446249A2
Authority
EP
European Patent Office
Prior art keywords
feeder
cap
feeder body
insert
insert 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.)
Granted
Application number
EP02790401A
Other languages
German (de)
French (fr)
Other versions
EP1446249B1 (en
Inventor
Jürgen-Michael SCHÄFER
Thomas-Michael SCHÄFER
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.)
GTP Schaefer Giesstechnishe Produkte GmbH
Original Assignee
GTP Schaefer Giesstechnishe Produkte GmbH
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 GTP Schaefer Giesstechnishe Produkte GmbH filed Critical GTP Schaefer Giesstechnishe Produkte GmbH
Publication of EP1446249A2 publication Critical patent/EP1446249A2/en
Application granted granted Critical
Publication of EP1446249B1 publication Critical patent/EP1446249B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C23/00—Tools; Devices not mentioned before for moulding
    • 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

Definitions

  • the invention relates to a feeder insert for inserting into a casting mold used in the casting of metals with a feeder body having a feeder volume made of an exothermic and / or insulating material, wherein the feeder body has an interior delimited by side winds and a lid area as feeder vowel and one in the bottom region of the feeder body Feed opening is formed as a connection to the mold cavity.
  • a feeder insert with the aforementioned features is described in DE 196 42 838 AI.
  • a feeder body which has a closed interior in its lid area as feed volume, can be placed on the mold surface of the casting mold when it is molded.
  • the molding pressure acting on the molding sand and thus also on the feeder body can lead to damage to the feeder body.
  • the company Chemex GmbH has proposed and used a feeder insert under the name "Teleskopspeiser", in which the feeder body consists of two parts that can be moved against each other, which together form the feeder volume.
  • the lower part of the feeder body that can be placed on the mold surface is open at the top and is overlapped from above by a second bell-shaped part of the feeder body, the parts being pushed into one another when the molding pressure occurs and for this purpose the outer diameter of the lower part and the inner diameter of the upper bell-shaped part are precisely matched to one another.
  • the disadvantage arises that the abrasion which occurs when the upper and lower part of the feeder insert are pushed into one another falls into the feeder volume and comes into contact with the liquid metal when the mold is poured off, so that contamination of the molten metal can result .
  • Another disadvantage is that the exact size of the feeder volume defined by the two parts of the feeder insert when the feeder insert is molded in is determined by the degree of sliding of the upper and lower part of the feeder insert into one another, so that no reliable statement can be made about the size of the feeder insert when the feeder insert is molded in is to be met. This simplifies the planning of the use and the selection of the size of the required feeder insert.
  • the invention is therefore based on the object of improving a feeder insert with the generic features in such a way that, despite maintaining a uniform, closed feeder volume inside the feeder insert, the feeder insert is protected against the acting mold pressure.
  • the basic idea of the invention provides that a hat-shaped feeder cap enclosing the outer wall of the feeder body while forming an insulating gap is provided on the feeder body is displaceably arranged and fixed in position against the feeder body before the feeder insert is molded in, and that at least one spacer made of a resilient material is arranged between the cover region of the feeder body and the cover of the feeder cap in such a way that when the feeder insert is molded in and the feeder body is placed on the mold surface as a result As a result of the molding pressure occurring, the feeder cap moves relative to the feeder body except for an insulating gap remaining between the lid area of the feeder cap and the feeder body.
  • the invention thus goes back to the principle of using a second feeder body in the form of a hat-shaped feeder cap as protection for the feeder body standing on the mold surface during molding.
  • the fact that appropriate measures ensure that there is or remains an insulating gap between the side walls of the feeder cap and feeder body and also between the lid areas, even when the feeder cap is pushed in, improves the overall thermal balance of the feeder insert.
  • the feeder body and feeder cap are suitably fixed against one another in a suitable manner, for example by gluing points, so that the feeder insert according to the invention is easy to handle when it is molded in.
  • the adhesive points are loosened by the molding pressure that occurs, and the feeder cap can yield to the acting molding pressure and shift relative to the feeder body standing on the mold surface.
  • the invention has the particular advantage that the known feeder body is now protected against the molding pressure that occurs during molding. Another advantage is that standardized parts can be used to manufacture the feeder insert according to the invention; the feeder caps additionally provided are also known per se and are available, and they require only a slight modification in order to be used in the manner according to the invention.
  • the spacer provided between the lid area of the feeder body and the lid of the feeder cap can be made of styrofoam, which gives way when the molding pressure occurs and settles in the gap between the feeder cap and feeder body, which decreases with increasing insertion, and thereby has an insulating effect.
  • a spring element can be arranged as a spacer, and finally the spacer can consist of an insulating material which, when the molding pressure occurs, creates the insulating gap between the lid region of the feeder body and the lid of the feeder cap.
  • a stop on the feeder cap or feeder body can be provided to limit the insertion path of the feeder cap on the feeder body.
  • These guide designs can consist of guide strips formed on the feeder body or the feeder cap, which advantageously have a triangular shape, so that the tips of the guide strips slide on the respective opposite component.
  • the side walls of the feeder body and / or feeder cap have undulating bulges as a guide design.
  • the feeder cap consists of an insulating material.
  • the feeder cap consists of an exothermic material which, despite the arrangement of the insulating gap, can be ignited by radiation, as a result of which the overall heat balance of the feeder insert can be improved.
  • Williams strips projecting into the feeder volume in the longitudinal direction of the feeder body are arranged.
  • FIG. 1 An embodiment of the invention is shown, which is described below.
  • the single figure shows a feeder insert with feeder body and feeder cap that can be slid onto it in a sectional side view.
  • the feeder insert shown in the drawing consists of a known feeder body 1 1, the side walls 12 and the Cover area 13 enclose an interior as feed volume 14.
  • a feed opening 15 is formed in the bottom region 25 of the feeder body 11 adjoining the side walls 12.
  • the feeder body 11 is placed on a mold surface 26 of an associated casting mold when the feeder insert 10 is molded in.
  • the feeder body 1 1 is overlapped by a hat-shaped feeder cap 16 with a cover 17 and side walls 18, the feeder cap 16 being kept at a distance from the feeder body 1 1 by means of at least one spacer 21 made of a resilient material such that when the molding pressure acts in the direction of the Arrow 27 the feeder cap 16 can yield to the molding pressure and can move relative to the fixed feeder body 1 1.
  • the dimensions of the feeder cap 16 are chosen with respect to the feeder body 11 such that the side walls 18 of the feeder cap 16 maintain a distance from the side walls 12 of the feeder body 11 and thus form an insulating gap 19. So that this insulating gap 19 is maintained during the insertion movement of the feeder cap 16 relative to the feeder body 11, several guide designs 22 are provided, preferably distributed over the circumference of the feeder body. These guide designs can consist, for example, of guide rails extending in the longitudinal direction of feeder body 11 or feeder cap 16 and attached to the respective side walls 12 and 18, which slide in a triangular shape with their tips on the other component. Of course, other designs are also possible, for example point elevations as guide designs. It is also possible for the side walls 12, 18 of the feeder body 11 and feeder cap 16 either individually or in cooperation with each other with corresponding wave-shaped elevations.
  • one or more stops 23 can be made on the lid 17 of the feeder cap 16 or the lid area 13 of the feeder body 12 be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Pens And Brushes (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Insulating Bodies (AREA)
  • Table Devices Or Equipment (AREA)

Abstract

A feeder insert is provided for a mold utilized for pouring metal. The insert includes a feeder body having a feed volume, in the form of an inner space, delimited by side walls and a top portion. A feed opening is provided in the base region for communicating with a hollow mold space. A domed feeder cap is displaceably disposed on a feeder body, surrounds the side walls of the feeder body to form an insulating gap, and is fixed in position relative to the feeder body prior to molding of the insert. At least one spacer of flexible material is disposed between the top portions of the feeder body and feeder cap such that during molding of the insert, and placement of the feeder body on the mold surface, due to molding pressure that occurs the feeder cap is displaceable relative to the feeder body while leaving an insulating gap between the top portions of the feeder body and feeder cap.

Description

Speisereinsatz mit Schutzkappe Feeder insert with protective cap
B e s c h r e i b u n gDescription
Die Erfindung betrifft einen Speisereinsatz zum Einsetzen in eine beim Gießen von Metallen verwendete Gießform mit einem ein Speiservolumen aufweisenden Speiserkorpus aus einem exothermen und/oder isolierenden Material, wobei der Speiserkorpus einen von Seitenwinden und einem Deckelbereieh umgrenzten Innenraum als Speiservohimett aufweist und im Bodenbereich des Speiserkorpus eine Speiseröffnung als Verbindung zum Formhohlraum ausgebildet ist.The invention relates to a feeder insert for inserting into a casting mold used in the casting of metals with a feeder body having a feeder volume made of an exothermic and / or insulating material, wherein the feeder body has an interior delimited by side winds and a lid area as feeder vowel and one in the bottom region of the feeder body Feed opening is formed as a connection to the mold cavity.
Ein Speisereinsatz mit den vorgenannten Merkmalen ist in der DE 196 42 838 AI beschrieben. T>er einen in seinem Deckelbe reich geschlossenen Innenraum als Speiservolumen aufweisende Speiserkorpus ist beim Einfαrmen auf die Formoberfläche der Gießform aufsetzbar. Beim Einformen des Speisereinsatzes besteht das Problem, dass der auf den Formsand und damit auch auf den Speiserkorpus einwirkende Formdruck zu einer Beschädigung des Speiserkorpus führen kann.A feeder insert with the aforementioned features is described in DE 196 42 838 AI. A feeder body, which has a closed interior in its lid area as feed volume, can be placed on the mold surface of the casting mold when it is molded. When molding the feeder insert, there is the problem that the molding pressure acting on the molding sand and thus also on the feeder body can lead to damage to the feeder body.
Zur Beseitigung dieses Problems hat die Firma Chemex GmbH unter der Bezeichnung "Teleskopspeiser" einen Speisereinsatz vorgeschlagen und benutzt, bei dem der Speiserkorpus aus zwei gegeneinander verschiebbaren Teilen besteht, die gemeinsam das Speiservolumen ausbilden. Dabei ist das auf die Formoberfläche aufsetzbare untere Teil des Speiserkorpus nach oben offen ausgebildet und wird von oben her von einem zweiten glockenförmigen Teil des Speiserkorpus übergriffen, wobei sich die Teile bei auftretendem Formdruck ineinander einschieben und hierzu der Außendurchmesser des unteren Teils und der Innendurchmesser des oberen glockenförmigen Teils passgenau aufeinander abgestimmt sind.To eliminate this problem, the company Chemex GmbH has proposed and used a feeder insert under the name "Teleskopspeiser", in which the feeder body consists of two parts that can be moved against each other, which together form the feeder volume. The lower part of the feeder body that can be placed on the mold surface is open at the top and is overlapped from above by a second bell-shaped part of the feeder body, the parts being pushed into one another when the molding pressure occurs and for this purpose the outer diameter of the lower part and the inner diameter of the upper bell-shaped part are precisely matched to one another.
Bei dem durch Benutzung bekanntgewordenen Speisereinsatz tritt der Nachteil auf, dass der beim Ineinanderschieben von oberem und unterem Teil des Speisereinsatzes entstehende Abrieb in das Speiservolumen hineinfällt und beim Abgießen der Form mit dem flüssigen Metall in Berührung kommt, so dass Verunreinigungen der Metallschmelze die Folge sein können. Ein weiterer Nachteil besteht darin, dass die exakte Größe des durch die beiden Teile des Speisereinsatzes definierten Speiservolumens bei eingeformten Speisereinsatz von dem Grad des Ineinanderschiebens von oberem und unterem Teil des Speisereinsatzes bestimmt ist, so dass keine sichere Aussage über die Größe des Speiservolumens bei eingeformten Speisereinsatz zu treffen ist. Damit ist die Planung des Einsatzes und die Auswahl der Größe des benötigten Speisereinsatzes erleichtert.In the case of the feeder insert which has become known through use, the disadvantage arises that the abrasion which occurs when the upper and lower part of the feeder insert are pushed into one another falls into the feeder volume and comes into contact with the liquid metal when the mold is poured off, so that contamination of the molten metal can result , Another disadvantage is that the exact size of the feeder volume defined by the two parts of the feeder insert when the feeder insert is molded in is determined by the degree of sliding of the upper and lower part of the feeder insert into one another, so that no reliable statement can be made about the size of the feeder insert when the feeder insert is molded in is to be met. This simplifies the planning of the use and the selection of the size of the required feeder insert.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Speisereinsatz mit den gattungsgemäßen Merkmalen so zu verbessern, dass trotz Beibehaltung eines einheitlichen geschlossenen Speiservolumens im Inneren des Speisereinsatzes ein Schutz des Speisereinsatzes gegen den einwirkenden Formdruck gegeben ist.The invention is therefore based on the object of improving a feeder insert with the generic features in such a way that, despite maintaining a uniform, closed feeder volume inside the feeder insert, the feeder insert is protected against the acting mold pressure.
Die Lösung dieser Aufgabe ergibt sich einschließlich vorteilhafter Ausgestaltungen und Weiterbildungen der Erfindung aus dem Inhalt der Patentansprüche, welche dieser Beschreibung nachgestellt sind.This object is achieved, including advantageous refinements and developments of the invention, from the content of the patent claims, which follow this description.
Die Erfindung sieht in ihrem Grundgedanken vor, dass auf dem Speiserkorpus eine hutförmige, die Außenwandung des Speiserkorpus unter Ausbildung eines Isolierspaltes umschließende Speiserkappe verschiebbar angeordnet und gegen den Speiserkorpus vor dem Einformen des Speisereinsatzes lagefixiert ist, und dass zwischen dem Deckelbereich des Speiserkorpus und dem Deckel der Speiserkappe wenigstens ein Abstandshalter aus einem nachgiebigen Material derart angeordnet ist, dass beim Einformen des Speisereinsatzes und Aufsetzen des Speiserkorpus auf der Formoberfläche infolge des auftretenden Formdrucks die Speiserkappe sich gegenüber dem Speiserkorpus bis auf einen zwischen Deckelbereich von Speiserkappe und Speiserkorpus verbleibenden Isolierspalt verschiebt.The basic idea of the invention provides that a hat-shaped feeder cap enclosing the outer wall of the feeder body while forming an insulating gap is provided on the feeder body is displaceably arranged and fixed in position against the feeder body before the feeder insert is molded in, and that at least one spacer made of a resilient material is arranged between the cover region of the feeder body and the cover of the feeder cap in such a way that when the feeder insert is molded in and the feeder body is placed on the mold surface as a result As a result of the molding pressure occurring, the feeder cap moves relative to the feeder body except for an insulating gap remaining between the lid area of the feeder cap and the feeder body.
Die Erfindung geht somit auf das Prinzip zurück, einen zweiten Speiserkörper in Form einer hutförmigen Speiserkappe als Schutz für den beim Einformen auf der Formoberfläche aufstehenden Speiserkorpus zu verwenden. Dadurch dass durch entsprechende Maßnahmen sichergestellt ist, dass auch bei eingeschobener Speiserkappe zwischen den Seitenwänden von Speiserkappe und Speiserkorpus wie auch zwischen den Deckelbereichen jeweils ein Isolierspalt besteht bzw. verbleibt, ist die wärmetechnische Bilanz des Speisereinsatzes insgesamt verbessert. Speiserkorpus und Speiserkappe sind vor dem Einformen in geeigneter Weise, beispielsweise durch Klebestellen, gegeneinander lagefixiert, so dass sich eine einfache Handhabung des erfindungsgemäßen Speisereinsatzes bei dessen Einformen ergibt. Durch den auftretenden Formdruck werden die Klebestellen gelöst, und die Speiserkappe kann dem einwirkenden Formdruck nachgeben und sich gegenüber dem auf der Formoberfläche aufstehenden Speiserkorpus verschieben. Da das Speiservolumen nach wie vor innerhalb des Speiserkorpus liegt und gegen die Speiserkappe abgeschlossen ist, kann eventueller Abrieb nicht in das Speiservolumen eintreten, und die Größe des Speiservolumens liegt durch die Auswahl des Speiserkorpus fest. Mit der Erfindung ist insbesondere der Vorteil verbunden, dass der an sich bekannte Speiserkorpus nun beim Einformen gegen den auftretenden Formdruck geschützt ist. Ein weiterer Vorteil besteht darin, dass zur Herstellung des erfindungsgemäßen Speisereinsatzes standardisierte Teile verwendet werden können; so sind die zusätzlich vorgesehenen Speiserkappen ebenfalls an sich bekannt und vorhanden, und sie bedürfen nur einer geringen Modifizierung, um in der erfindungsgemäßen Weise verwendet zu werden.The invention thus goes back to the principle of using a second feeder body in the form of a hat-shaped feeder cap as protection for the feeder body standing on the mold surface during molding. The fact that appropriate measures ensure that there is or remains an insulating gap between the side walls of the feeder cap and feeder body and also between the lid areas, even when the feeder cap is pushed in, improves the overall thermal balance of the feeder insert. The feeder body and feeder cap are suitably fixed against one another in a suitable manner, for example by gluing points, so that the feeder insert according to the invention is easy to handle when it is molded in. The adhesive points are loosened by the molding pressure that occurs, and the feeder cap can yield to the acting molding pressure and shift relative to the feeder body standing on the mold surface. Since the feeder volume is still inside the feeder body and is sealed against the feeder cap, any abrasion cannot enter the feeder volume, and the size of the feeder volume is determined by the choice of the feeder body. The invention has the particular advantage that the known feeder body is now protected against the molding pressure that occurs during molding. Another advantage is that standardized parts can be used to manufacture the feeder insert according to the invention; the feeder caps additionally provided are also known per se and are available, and they require only a slight modification in order to be used in the manner according to the invention.
Nach Ausführungsbeispielen der Erfindung kann der zwischen dem Deckelbereich des Speiserkorpus und dem Deckel der Speiserkappe vorgesehene Abstandshalter aus Styropor bestehen, welches Material bei auftretendem Formdruck nachgibt und sich in den sich mit zunehmendem Einschieben verringernden Spalt zwischen Speiserkappe und Speiserkorpus setzt und dabei eine isolierende Wirkung entfaltet. Alternativ kann als Abstandshalter ein Federelement angeordnet sein, und schließlich kann der Abstandshalter aus einem isolierenden Material bestehen, welches bei auftretendem Formdruck den Isolierspalt zwischen dem Deckelbereich des Speiserkorpus und dem Deckel der Speiserkappe bewirkt.According to embodiments of the invention, the spacer provided between the lid area of the feeder body and the lid of the feeder cap can be made of styrofoam, which gives way when the molding pressure occurs and settles in the gap between the feeder cap and feeder body, which decreases with increasing insertion, and thereby has an insulating effect. Alternatively, a spring element can be arranged as a spacer, and finally the spacer can consist of an insulating material which, when the molding pressure occurs, creates the insulating gap between the lid region of the feeder body and the lid of the feeder cap.
Damit der gewünschte Isolierspalt zwischen dem Deckelbereich des Speiserkorpus und dem Deckel der Speiserkappe am Ende des Einschubweges aufrechterhalten bleibt, kann zur Begrenzung des Einschubweges der Speiserkappe auf dem Speiserkorpus ein Anschlag an Speiserkappe oder Speiserkorpus vorgesehen sein.So that the desired insulating gap between the lid area of the feeder body and the lid of the feeder cap is maintained at the end of the insertion path, a stop on the feeder cap or feeder body can be provided to limit the insertion path of the feeder cap on the feeder body.
Da während des Aufschiebens der Speiserkappe auf den Speiserkorpus zwischen den Seitenwänden von Speiserkappe und Speiserkorpus der vorgesehene Isolierspalt aufrechterhalten bleiben soll, sind nach einem Ausführungsbeispiel entsprechende Führungsgestaltungen vorgesehen. Diese Führungsgestaltungen können aus an dem Speiserkorpus oder der Speiserkappe ausgebildeten Führungsleisten bestehen, die zweckmäßig eine dreieckige Gestalt aufweisen, so dass die Spitzen der Führungsleisten auf dem jeweils gegenüberliegenden Bauteil gleiten.Since the intended insulating gap is to be maintained during the sliding of the feeder cap onto the feeder body between the side walls of the feeder cap and feeder body, according to one Embodiment corresponding guide designs provided. These guide designs can consist of guide strips formed on the feeder body or the feeder cap, which advantageously have a triangular shape, so that the tips of the guide strips slide on the respective opposite component.
Alternativ kann vorgesehen sein, dass die Seitenwände von Speiserkorpus und/oder Speiserkappe wellenförmige Auswölbungen als Führungsgestaltung aufweisen.Alternatively, it can be provided that the side walls of the feeder body and / or feeder cap have undulating bulges as a guide design.
Nach einem Ausführungsbeispiel der Erfindung ist vorgesehen, dass die Speiserkappe aus einem isolierenden Material besteht.According to one embodiment of the invention, it is provided that the feeder cap consists of an insulating material.
Es kann jedoch auch vorgesehen sein, dass die Speiserkappe aus einem exothermen Material besteht, welches trotz der Anordnung des Isolierspaltes durch Strahlung entzündbar ist, wodurch der Wärmehaushalt des Speisereinsatzes insgesamt verbessert werden kann.However, it can also be provided that the feeder cap consists of an exothermic material which, despite the arrangement of the insulating gap, can be ignited by radiation, as a result of which the overall heat balance of the feeder insert can be improved.
Schließlich kann nach einem Ausführungsbeispiel der Erfindung vorgesehen sein, dass an der inneren Oberfläche der Seitenwände des Speiserkorpus in Längsrichtung des Speiserkorpus in das Speiservolumen vorkragende Williams-Leisten angeordnet sind.Finally, according to one embodiment of the invention it can be provided that on the inner surface of the side walls of the feeder body, Williams strips projecting into the feeder volume in the longitudinal direction of the feeder body are arranged.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung wiedergegeben, welches nachstehend beschrieben ist. Die einzige Figur zeigt einen Speisereinsatz mit Speiserkorpus und darauf aufschiebbarer Speiserkappe in einer geschnittenen Seitenansicht.In the drawing, an embodiment of the invention is shown, which is described below. The single figure shows a feeder insert with feeder body and feeder cap that can be slid onto it in a sectional side view.
Der aus der Zeichnung ersichtliche Speisereinsatz besteht aus einem an sich bekannten Speiserkorpus 1 1 , dessen Seitenwände 12 und dessen Deckelbereich 13 einen Innenraum als Speiservolumen 14 umschließen. In dem an die Seitenwände 12 anschließenden Bodenbereich 25 des Speiserkorpus 1 1 ist eine Speiseröffnung 15 ausgebildet. Der Speiserkorpus 1 1 wird beim Einformen des Speisereinsatzes 10 auf eine Formoberfläche 26 einer zugehörigen Gießform aufgesetzt.The feeder insert shown in the drawing consists of a known feeder body 1 1, the side walls 12 and the Cover area 13 enclose an interior as feed volume 14. A feed opening 15 is formed in the bottom region 25 of the feeder body 11 adjoining the side walls 12. The feeder body 11 is placed on a mold surface 26 of an associated casting mold when the feeder insert 10 is molded in.
Der Speiserkorpus 1 1 wird von einer hutförmigen Speiserkappe 16 mit einem Deckel 17 und Seitenwänden 18 übergriffen, wobei die Speiserkappe 16 mittels wenigstens eines Abstandshalters 21 aus einem nachgiebigen Material von dem Speiserkorpus 1 1 in Abstand gehalten ist derart, dass bei einwirkendem Formdruck in Richtung des Pfeils 27 die Speiserkappe 16 dem Formdruck nachgeben und sich gegenüber dem ortsfesten Speiserkorpus 1 1 verschieben kann.The feeder body 1 1 is overlapped by a hat-shaped feeder cap 16 with a cover 17 and side walls 18, the feeder cap 16 being kept at a distance from the feeder body 1 1 by means of at least one spacer 21 made of a resilient material such that when the molding pressure acts in the direction of the Arrow 27 the feeder cap 16 can yield to the molding pressure and can move relative to the fixed feeder body 1 1.
Die Abmessungen der Speiserkappe 16 sind dabei gegenüber dem Speiserkorpus 1 1 derart gewählt, dass die Seitenwände 18 der Speiserkappe 16 einen Abstand von den Seitenwänden 12 des Speiserkorpus 1 1 einhalten und so einen Isolierspalt 19 ausbilden. Damit dieser Isolierspalt 19 während der Einschubbewegung der Speiserkappe 16 gegenüber dem Speiserkorpus 1 1 aufrechterhalten bleibt, sind, vorzugsweise über den Umfang des Speiserkorpus verteilt, mehrere Führungsgestaltungen 22 vorgesehen. Diese Führungsgestaltungen können beispielsweise aus sich in der Längsrichtung von Speiserkorpus 1 1 bzw. Speiserkappe 16 erstreckenden und an den jeweiligen Seitenwänden 12 bzw. 18 angebrachten Führungsleisten bestehen, die bei einer dreieckigen Form mit ihren Spitzen auf dem jeweils anderen Bauteil gleiten. Selbstverständlich sind auch andere Ausführungen möglich, beispielsweise punktuell angebrachte Erhebungen als Führungsgestaltungen. Auch ist möglich, die Seitenwände 12, 18 von Speiserkorpus 1 1 und Speiserkappe 16 entweder einzeln oder im Zusammenwirken miteinander mit entsprechenden wellenförmigen Erhebungen zu versehen.The dimensions of the feeder cap 16 are chosen with respect to the feeder body 11 such that the side walls 18 of the feeder cap 16 maintain a distance from the side walls 12 of the feeder body 11 and thus form an insulating gap 19. So that this insulating gap 19 is maintained during the insertion movement of the feeder cap 16 relative to the feeder body 11, several guide designs 22 are provided, preferably distributed over the circumference of the feeder body. These guide designs can consist, for example, of guide rails extending in the longitudinal direction of feeder body 11 or feeder cap 16 and attached to the respective side walls 12 and 18, which slide in a triangular shape with their tips on the other component. Of course, other designs are also possible, for example point elevations as guide designs. It is also possible for the side walls 12, 18 of the feeder body 11 and feeder cap 16 either individually or in cooperation with each other with corresponding wave-shaped elevations.
Da auch zwischen dem Deckelbereich 13 des Speiserkorpus 1 1 und dem Deckel 17 der Speiserkappe 16 nach dem Einschieben der Speiserkappe 16 ein Isolierspalt 20 verbleiben soll, können ein oder mehrere Anschläge 23 an dem Deckel 17 der Speiserkappe 16 bzw. dem Deckelbereich 13 des Speiserkorpus 12 vorgesehen sein.Since an insulating gap 20 should also remain between the lid area 13 of the feeder body 11 and the lid 17 of the feeder cap 16 after the feeder cap 16 has been pushed in, one or more stops 23 can be made on the lid 17 of the feeder cap 16 or the lid area 13 of the feeder body 12 be provided.
Die in der vorstehenden Beschreibung, den Patentansprüchen, der Zusammenfassung und der Zeichnung offenbarten Merkmale des Gegenstandes dieser Unterlagen können sowohl einzeln als auch in beliebigen Kombinationen untereinander für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein. The features of the subject matter of these documents disclosed in the above description, the patent claims, the abstract and the drawing can be essential both individually and in any combination with one another for realizing the invention in its various embodiments.

Claims

Speisereinsatz mit SchutzkappeP at ent an sp rü ch e Feeder insert with protective cap
1. Speisereinsatz zum Einsetzen in eine beim Gießen von Metallen verwendete Gießform mit einem ein Speiservolumen aufweisenden Speiserkorpus aus einem exothermen und/oder isolierenden Material, wobei der Speiserkorpus einen von Seitenwänden und einem Deckelbereich umgrenzten Innenraum als Speiservolumen aufweist und im Bodenbereich des Speiserkorpus eine Speiseröffnung als Verbindung zum Formhohlraum ausgebildet ist, dadurch gekennzeichnet, dass auf dem Speiserkorpus (11) eine hutförmige, die Außenwandung (12) des Speiserkorpus (11) unter Ausbildung eines Isolierspaltes (19) umschließende Speiserkappe (16) verschiebbar angeordnet und gegen den Speiserkorpus (11) vor dem Einformen des Speisereinsatzes (10) lagefixiert ist, und dass zwischen dem Deckelbereich (13) des Speiserkorpus (11) und dem Deckel (17) der Speiserkappe (16) wenigstens ein Abstandshalter (21) aus einem nachgiebigen Material derart angeordnet ist, dass beim Einformen des Speisereinsatzes (10) und Aufsetzen des Speiserkorpus (11) auf der Formoberfläche (26) infolge des auftretenden Formdrucks die Speiserkappe (16) sich gegenüber dem Speiserkorpus (11) bis auf einen zwischen Deckelbereich (13, 17) von Speiserkappe (16) und Speiserkorpus (11) verbleibenden Isolierspalt (20) verschiebt. 1. Feeder insert for insertion into a casting mold used in the casting of metals with a feeder body having a feeder volume made of an exothermic and / or insulating material, the feeder body having an interior space delimited by side walls and a lid area as feeder volume and a feeder opening in the bottom area of the feeder body A connection to the mold cavity is formed, characterized in that on the feeder body (11) a hat-shaped feeder cap (16) surrounding the outer wall (12) of the feeder body (11) with the formation of an insulating gap (19) is arranged displaceably and against the feeder body (11). is fixed in position before the feeder insert (10) is molded in, and that at least one spacer (21) made of a flexible material is arranged between the lid region (13) of the feeder body (11) and the lid (17) of the feeder cap (16) in such a way that when molding the feeder insert (10) and putting the S due to the molding pressure that occurs, the feeder cap (16) is opposite the feeder body (11) except for an insulating gap (20) remaining between the lid area (13, 17) of the feeder cap (16) and feeder body (11) ) moves.
2. Speisereinsatz nach Anspruch 1 , dadurch gekennzeichnet, dass der Abstandshalter (21 ) aus Styropor besteht.2. Feeder insert according to claim 1, characterized in that the spacer (21) consists of polystyrene.
3. Speisereinsatz nach Anspruch 1 , dadurch gekennzeichnet, dass als Abstandshalter ein Federelement angeordnet ist.3. Feeder insert according to claim 1, characterized in that a spring element is arranged as a spacer.
4. Speisereinsatz nach Anspruch 1 , dadurch gekennzeichnet, dass der Abstandshalter (21 ) aus einem isolierenden Material besteht, welches bei auftretendem Formdruck den Isolierspalt (20) zwischen dem Deckelbereich (13) des Speiserkorpus ( 1 1) und dem Deckel (17) der Speiserkappe (16) bewirkt.4. feeder insert according to claim 1, characterized in that the spacer (21) consists of an insulating material which, when the molding pressure occurs, the insulating gap (20) between the lid region (13) of the feeder body (1 1) and the lid (17) Feeder cap (16) causes.
5. Speisereinsatz nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zur Begrenzung des Einschubweges der Speiserkappe (16) auf dem Speiserkorpus ( 1 1 ) ein Anschlag an Speiserkappe ( 16) oder Speiserkorpus ( 1 1) ausgebildet ist.5. feeder insert according to one of claims 1 to 4, characterized in that a stop on the feeder cap (16) or feeder body (1 1) is formed to limit the insertion path of the feeder cap (16) on the feeder body (1 1).
6. Speisereinsatz nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass zwischen den Seitenwänden (12, 18) von Speiserkorpus ( 1 1 ) und Speiserkappe ( 16) Führungsgestaltungen (22) zur Aufrechterhaltung des Isolierspaltes ( 19) während der Verschiebung der Speiserkappe ( 16) auf dem Speiserkorpus ( 1 1 ) vorgesehen sind.6. feeder insert according to one of claims 1 to 5, characterized in that between the side walls (12, 18) of feeder body (1 1) and feeder cap (16) guide designs (22) for maintaining the insulating gap (19) during the displacement of the feeder cap (16) are provided on the feeder body (1 1).
7. Speisereinsatz nach Anspruch 6, dadurch gekennzeichnet, dass die Führungsgestaltungen (22) aus an dem Speiserkorpus ( 1 1 ) oder der Speiserkappe ( 16) ausgebildeten Führungsleisten bestehen. 7. feeder insert according to claim 6, characterized in that the guide designs (22) consist of on the feeder body (1 1) or the feeder cap (16) formed guide strips.
8. Speisereinsatz nach Anspruch 7, dadurch gekennzeichnet, dass die Führungsleisten eine dreieckige Gestalt aufweisen derart, dass die Spitzen der Führungsleisten auf dem gegenüberliegenden Bauteil gleiten.8. feeder insert according to claim 7, characterized in that the guide strips have a triangular shape such that the tips of the guide strips slide on the opposite component.
9. Speisereinsatz nach Anspruch 6, dadurch gekennzeichnet, dass die Seitenwände ( 12, 18) von Speiserkorpus (1 1) und/oder Speiserkappe ( 16) wellenförmige Auswölbungen als Führungsgestaltungen aufweisen.9. feeder insert according to claim 6, characterized in that the side walls (12, 18) of feeder body (1 1) and / or feeder cap (16) have wavy bulges as guide designs.
10. Speisereinsatz nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Speiserkappe (16) aus einem isolierenden Material besteht.10. feeder insert according to one of claims 1 to 9, characterized in that the feeder cap (16) consists of an insulating material.
1 1. Speisereinsatz nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Speiserkappe ( 16) aus einem exothermen Material besteht.1 1. feeder insert according to one of claims 1 to 9, characterized in that the feeder cap (16) consists of an exothermic material.
12. Speisereinsatz nach einem der Ansprüche 1 bis 1 1 , dadurch gekennzeichnet, dass an der inneren Oberfläche der Seitenwände ( 12) des Speiserkorpus ( 1 1) in Längsrichtung des Speiserkorpus ( 1 1 ) in das Speiservolumen ( 14) vorkragende Williams-Leisten angeordnet sind. 12. feeder insert according to one of claims 1 to 1 1, characterized in that on the inner surface of the side walls (12) of the feeder body (1 1) in the longitudinal direction of the feeder body (1 1) in the feeder volume (14) projecting Williams strips are.
EP02790401A 2001-11-20 2002-11-19 Feeder insert with protective cap Expired - Lifetime EP1446249B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10156571 2001-11-20
DE10156571A DE10156571C1 (en) 2001-11-20 2001-11-20 Feeder, used for inserting into a casting mold for casting metals, comprises a hat-like cap enclosing the outer wall of a feeder body forming an insulating gap and fixed against the body
PCT/EP2002/012925 WO2003043761A2 (en) 2001-11-20 2002-11-19 Feeder insert with protective cap

Publications (2)

Publication Number Publication Date
EP1446249A2 true EP1446249A2 (en) 2004-08-18
EP1446249B1 EP1446249B1 (en) 2007-04-25

Family

ID=7706122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02790401A Expired - Lifetime EP1446249B1 (en) 2001-11-20 2002-11-19 Feeder insert with protective cap

Country Status (10)

Country Link
US (1) US7156146B2 (en)
EP (1) EP1446249B1 (en)
CN (1) CN1273239C (en)
AT (1) ATE360487T1 (en)
AU (1) AU2002366223A1 (en)
DE (2) DE10156571C1 (en)
ES (1) ES2284955T3 (en)
PL (1) PL203933B1 (en)
RU (1) RU2004118608A (en)
WO (1) WO2003043761A2 (en)

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NO318367B1 (en) * 2003-09-29 2005-03-07 Elkem Materials Feeder sleeve for use in sand forming machines for stopperier
DE102004017062A1 (en) * 2004-04-02 2005-10-20 Luengen Gmbh & Co Kg As Umbrella or dowel feeder
DE102005025701B4 (en) * 2005-06-04 2007-03-08 GTP Schäfer Gießtechnische Produkte GmbH Feeder with yielding feeder base
EP1920859A1 (en) * 2006-10-31 2008-05-14 GTP-Schäfer Giesstechnische Produkte GmbH Two part feeder insert having a compliant bottom part
DE102007012117A1 (en) * 2007-03-13 2008-09-18 AS Lüngen GmbH Feeder for producing cast metal pieces in a foundry comprises a feeder head having an insulating hollow chamber arranged around the periphery of an equalizing hollow chamber
DE202007005575U1 (en) * 2007-04-18 2007-06-14 GTP Schäfer Gießtechnische Produkte GmbH Feeder head insert for metal casting molds has tubular upper section and tapering lower section which is fitted at its tip with tapering metal ring
JP5352785B2 (en) * 2009-04-17 2013-11-27 藤原技研有限会社 Cast iron casting method, feeder, mold and mold making method
CN101549387B (en) * 2009-05-18 2011-04-20 谢锦荣 A cylindrical insulating riser base
JP5352786B2 (en) * 2009-07-17 2013-11-27 藤原技研有限会社 Cast iron casting method, feeder, mold and mold making method
DE102010051348B3 (en) * 2010-11-13 2011-11-03 Huppert Engineering Gmbh & Co. Kg Feeder cap for maintaining volume shrinkage of casting material occurring during solidification of casting through integrated transport device, comprises anchor arms plunging into feeder body, and coupling part
CN103128231B (en) * 2013-03-12 2015-10-07 洛阳古城机械有限公司 A kind of method solving head valve boss shrinkage cavity shrinkage porosity
DE102013209775B3 (en) 2013-05-27 2014-10-23 Chemex Gmbh feeder sleeve
GB201415516D0 (en) * 2014-09-02 2014-10-15 Foseco Int Feeder system
CN107774914A (en) * 2017-12-12 2018-03-09 重庆乐迪机车车辆配件有限公司 A kind of exothermic riser neck structure of casting
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USD872781S1 (en) 2018-04-13 2020-01-14 Foseco International Limited Breaker core
DE102019102449A1 (en) * 2019-01-31 2020-08-06 Chemex Foundry Solutions Gmbh One-piece feeder body for use in casting metals
EP3756788A1 (en) * 2019-06-24 2020-12-30 GTP Schäfer Gießtechnische Produkte GmbH Feeder insert with outer contour having recesses and protrusions
EP3756787B1 (en) * 2019-06-24 2022-05-04 GTP Schäfer Gießtechnische Produkte GmbH Feeder insert with sleeve
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Also Published As

Publication number Publication date
PL368685A1 (en) 2005-04-04
DE10156571C1 (en) 2003-01-16
WO2003043761A3 (en) 2003-11-06
US20040256075A1 (en) 2004-12-23
CN1589186A (en) 2005-03-02
DE50210045D1 (en) 2007-06-06
US7156146B2 (en) 2007-01-02
CN1273239C (en) 2006-09-06
ATE360487T1 (en) 2007-05-15
AU2002366223A1 (en) 2003-06-10
PL203933B1 (en) 2009-11-30
EP1446249B1 (en) 2007-04-25
ES2284955T3 (en) 2007-11-16
RU2004118608A (en) 2006-01-10
WO2003043761A2 (en) 2003-05-30
AU2002366223A8 (en) 2003-06-10

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