EP3285941A1 - Core box for producing casting cores - Google Patents

Core box for producing casting cores

Info

Publication number
EP3285941A1
EP3285941A1 EP16717696.5A EP16717696A EP3285941A1 EP 3285941 A1 EP3285941 A1 EP 3285941A1 EP 16717696 A EP16717696 A EP 16717696A EP 3285941 A1 EP3285941 A1 EP 3285941A1
Authority
EP
European Patent Office
Prior art keywords
core box
plate
heating
oil
contour
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
EP16717696.5A
Other languages
German (de)
French (fr)
Other versions
EP3285941B8 (en
EP3285941B1 (en
Inventor
Guenther PLOEDERL
Markus GRESSENBAUER
Guenter MONDL
Ingo Prass
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.)
Nemak SAB de CV
Original Assignee
Nemak SAB de CV
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 Nemak SAB de CV filed Critical Nemak SAB de CV
Priority to PL16717696T priority Critical patent/PL3285941T3/en
Publication of EP3285941A1 publication Critical patent/EP3285941A1/en
Application granted granted Critical
Publication of EP3285941B1 publication Critical patent/EP3285941B1/en
Publication of EP3285941B8 publication Critical patent/EP3285941B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06—Core boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores

Definitions

  • the invention relates to a core box for producing cores from a heat supply
  • solidifying molding material comprising at least two core box parts, which together form the shape of
  • Heating means for heating the core box parts wherein the heating means comprises at least one oil line, which is in thermal contact with at least one of the core box parts and to an oil supply
  • Core boxes of the type in question are used in core shooting machines, with which casting cores are produced for the production of castings.
  • the core boxes define with their core box parts a mold cavity, the boundary surfaces of which mold the contour of the casting core to be produced.
  • the respective molding material is pressurized in the mold cavity of
  • Kernkastens ge.unteren so that a compact core is formed.
  • Shaped materials for the processing of which a core box according to the invention is particularly suitable are from a Foundry sand and an inorganic binder and optional additives mixed.
  • the cores in the mold cavity of the core box are solidified by dehydration.
  • the molding material in the core box heat is supplied and the escaping moisture in the
  • This process can be accelerated by gassing the molding material mass shot into the mold cavity with hot air, which passes through injection openings in the mold cavity
  • Mold cavity of the core box is blown and discharged through the slot-like openings.
  • the heat is supplied via the core box parts, which are usually made of a sufficiently wear-resistant and good thermal conductivity tool steel, for example, the steel with the material number 1.2343.
  • the core box parts which are usually made of a sufficiently wear-resistant and good thermal conductivity tool steel, for example, the steel with the material number 1.2343.
  • running oil lines in the respective core box part is not only manufacturing technically complex, but due to the fact that the individual sections of the oil line must necessarily be rectilinear, the possibilities of designing and arranging the required in each core box part
  • the invention proposes a core box with the features specified in claim 1.
  • an inventive device also comprises
  • the heating device has at least one oil line which is in thermal contact with at least one of the core box parts and to an oil supply is connected, which feeds the oil line with a tempered oil to heat the core box part.
  • Kernkastener divided into a shape of the casting cores to be produced mapping contour plate and a heating plate in which the oil line is provided, wherein the heating plate extends over the contour plate surface and is coupled to the contour plate.
  • Kernkastenteils in a contour plate and a heating plate it is possible to design both the contour plate and the heating plate optimized in terms of their intended use and design. Compared to conventional oil-heated core boxes, where the hot oil through into the respective core box part
  • the contour part for wear repairs can be easily dismantled, subjected to a repair, for example by machining or welding and re-assembled. The danger that this will lead to damage of oil-carrying lines or There is no residual oil ignited during welding work.
  • the invention thus makes it possible with simple means the practical use of an oil heater for the
  • Alternative heating devices such as an electric heater, characterized in that it is based on a heated oil heating the
  • Kernkastens by increased process reliability due to low failure risk and long life.
  • Ultrasonic bath which, for example, due to the risk of ingress of water in an electrically operated heating is out of the question.
  • Hot plate then acts in the first place as a holder and protection for the oil line to the Kontjud.
  • the oil line optimally arranged so that a
  • thermoelectric material in particular a for
  • Heating plate also from a thermally well conductive
  • Light metal material in particular an Al material
  • Light metal materials also has a favorable effect on the weight of a core box according to the invention.
  • oil line should be molded into the material of the heating plate and should be used for molding conventional einformende, especially machining processes, so it turns out in manufacturing technology point of view
  • the oil conduit is formed in the manner of a channel in one of the sides of the heating plate, which extends parallel to the associated contour plate.
  • the in the concerned plate side molded in the manner of a groove
  • Oil channel is openly accessible with disassembled hot plate and can therefore not only mold easily into the material of the hot plate, but also just as easy
  • oil duct is formed in the contour plate of the associated side of the heating plate, so when done covers
  • this is suitably made of a thermally highly conductive material.
  • Contour plate can thereby be ensured that the contour plate, the heating plate or the sealing plate made of a material having a thermal conductivity ⁇ of at least 40 W / (m * K), of course, at least one plate of such a highly conductive material should come into direct contact with the warm oil and the contour plate at the same time and in each case.
  • sufficient thermal conductivities have all iron and light metal based alloys.
  • a core box according to the invention is particularly suitable for core production processes requiring hot air aeration. Therefore, a core box according to the invention is particularly for core manufacturing processes
  • FIG. 1 shows a core box in a longitudinal section
  • FIG. 2 shows a contour plate of the core box according to FIG. 1
  • Fig. 3 is a heating plate of the core box of FIG. 1 in
  • the core box 1 includes an upper core box part 2 and a lower core box part 3.
  • the upper core box part 2 is composed of a contour plate 4, which carries contour-forming form elements 5, 6 on its side assigned to the lower core box part 3, a sealing plate 7 lying on the contour plate 4, a heating plate 8 seated on the sealing plate 7 and a weft plate 9 supported thereon ,
  • the weft plate 9 is coupled via coupling elements in a conventional manner by means of tenon joints 10,11 with the contour plate 4 and aligned so that the discharge funnel 12 of the weft plate 9 fit fit into the associated shot openings 13, which are aligned in the vertical direction to each other in the
  • Contour plate 4 the sealing plate 7 and the heating plate 8 are formed.
  • correspondingly shaped depressions engage, which are formed in the edge region of the upper core box part 2 associated upper side of the lower core box part 3.
  • the lower core box part 3 comprises a
  • Core box part 2 associated side carries a contour plate 16 of the lower box part 3.
  • the contour plate 16 carries at its the upper core box part 2 associated free side contouring form elements 17,18.
  • Formholraum in which several cores, for example, the cores for the inlet channel, the outlet channel, the
  • Cylinder head for an internal combustion engine can be fired simultaneously.
  • the shapes of the cores are determined by the form elements 5, 6, 17, 18, of which only two form elements 5, 6 are shown in FIG. 2 for the sake of clarity in the contour plate 4 of the upper core box part 2.
  • Core box 1 different core programs can be generated.
  • the contour plate 16 is seated on a sealing plate 22 on a heating plate 23 of the lower core box part 3.
  • the contour plate 16, sealing plate 22 and Heating plate 23 formed package sits in a receptacle of the lower frame 15th
  • an ejector plate 24 is arranged, which carries in the direction of the contour plate 16 facing ejector 25.
  • the ejectors 25 engage through through holes formed in the lower contour plate 16. After curing, the molded in the core box 1
  • the ejector plate 24 is raised with the core box 1 open in the direction of the contour plate 16, so that the ejector 25 lift the finished cores from the moldings 17,18.
  • the finished casting cores can then be removed freely from the core box 1.
  • worn mold elements 5,6,17,18 each consist of a high-quality, wear and temperature-resistant tool steel
  • the heating plates 8,23 each consist of an aluminum material.
  • they may also consist of a conventional unalloyed structural steel, such as the steel with the material number 1.0050.
  • Oil line 27 is guided over the side 26 in a plurality of turns, that on the one hand all of the temperature critical in Kernschman plante beautiful areas of the contour plate 4 are covered, on the other hand, but also the areas are bypassed by the Slot nozzles 20,21 are performed.
  • the inflow 28 and the outflow 29 are connected to a not shown here
  • Oil supply connected, which promotes in the circuit to the required temperature heated oil through the oil line 27.
  • an oil line 30 has been formed in a corresponding manner.
  • the sealing plates 7,22 are also made of a high temperature conductive material, such as an Al material or a suitable steel, so that the entrained by the flowing through the oil line 27,30, heated oil heat almost lossless on the
  • Powder additive mixed.
  • the sand is first presented with the powder additive and then under running mixer, the liquid binder component
  • contour plates 4, 16 and the mold elements 5, 6, 17, 18 carried by them are replaced by the heating plates 8, 23 preheated to a temperature of 130 ° C. Then the molding material mixture is acted upon by 5 bar
  • Core box 1 shot and remains there for 32 s.
  • the core box 1 is opened and the ejector 25 are actuated.
  • the completely hardened cores can now be removed.
  • core box 1 at any position slot nozzles can be introduced to optimize the vent.
  • the invention makes it possible to design its contour plates 4, 16 and the molded elements 5, 6, 17, 18 carried by them as freely as it is used to core boxes, which are used for the so-called “core boxes”.
  • Cold box method are used in which no
  • Curing takes place by a chemical reaction as a result of gassing with a reaction gas.

Abstract

The invention relates to a core box (1) for producing casting cores from a moulding material which solidifies by supplying heat, comprising at least two core box parts (2, 3), which model the shape of the casting cores to be produced, and a heating device for heating the core box parts (2, 3), wherein the heating device has at least one oil line (27, 30) which is in thermal contact with at least one of the core box parts (2, 3) and is connected to an oil supply which supplies the oil line (27, 30) with a temperature-controlled oil to heat the core box part (2, 3). In order to be able to produce such an oil-heatable core box with reduced complexity and maximum freedom in the design, the invention proposes dividing at least one of the core box parts (2, 3) into a contour plate (4, 16) modelled the shape of the casting cores to be produced and a heating plate (8, 23) coupled to the contour plate (4, 16), which heating plate extends flat over the contour plate (4, 16) and in which the oil line (27, 30) is provided.

Description

Kernkasten zum Herstellen von Gießkernen  Core box for the production of casting cores
Die Erfindung betrifft einen Kernkasten zum Herstellen von Gießkernen aus einem durch Wärmezufuhr The invention relates to a core box for producing cores from a heat supply
verfestigenden Formstoff, umfassend mindestens zwei Kernkastenteile, die gemeinsam die Form der solidifying molding material comprising at least two core box parts, which together form the shape of
herzustellenden Gießkerne abbilden, und eine Imagine casting cores to be produced, and one
Heizeinrichtung zum Beheizen der Kernkastenteile, wobei die Heizeinrichtung mindestens eine Ölleitung aufweist, die in thermischem Kontakt mit mindestens einem der Kernkastenteile steht und an eine Ölversorgung Heating means for heating the core box parts, wherein the heating means comprises at least one oil line, which is in thermal contact with at least one of the core box parts and to an oil supply
angeschlossen ist, die zum Beheizen des Kernkastenteils die Ölleitung mit einem temperierten Öl speist. is connected, which feeds the oil line with a tempered oil to heat the core box part.
Kernkästen der hier in Rede stehenden Art werden in Kernschießmaschinen eingesetzt, mit denen Gießkerne für die Herstellung von Gussteilen hergestellt werden. Die Kernkästen umgrenzen dabei mit ihren Kernkastenteilen einen Formhohlraum, dessen Begrenzungsflächen die Kontur des herzustellenden Gießkerns abformen. Der jeweilige Formstoff wird unter Druck in den Formhohlraum des Core boxes of the type in question are used in core shooting machines, with which casting cores are produced for the production of castings. The core boxes define with their core box parts a mold cavity, the boundary surfaces of which mold the contour of the casting core to be produced. The respective molding material is pressurized in the mold cavity of
Kernkastens ge.schossen, so dass ein kompakter Kern entsteht . Kernkastens ge.schossen, so that a compact core is formed.
Formstoffe, für deren Verarbeitung ein erfindungsgemäßer Kernkasten insbesondere geeignet ist, sind aus einem Formsand und einem anorganischen Binder sowie optionalen Additiven gemischt. Shaped materials for the processing of which a core box according to the invention is particularly suitable are from a Foundry sand and an inorganic binder and optional additives mixed.
Bei der beispielsweise in der DE 196 32 293 AI In the example in DE 196 32 293 AI
beschriebenen Herstellung von Gießkernen unter described production of casting cores under
Verwendung von so genannten anorganischen Warmbox- Kernsandbindersystemen werden die Kerne im Formhohlraum des Kernkastens durch Wasserentzug verfestigt. Hierzu wird der Formstoffmasse im Kernkasten Wärme zugeführt und die austretende Feuchtigkeit über in die Using so-called inorganic hot box core sand binder systems, the cores in the mold cavity of the core box are solidified by dehydration. For this purpose, the molding material in the core box heat is supplied and the escaping moisture in the
Kernkastenteile eingeformte, in der Regel schlitzartige Öffnungen, in der Fachsprache auch "Schlitzdüsen" genannt, abgezogen. Kernkastenteile molded, usually slot-like openings, in technical language also called "slot nozzles" withdrawn.
Beschleunigt werden kann dieser Prozess durch Begasung der in den Formhohlraum geschossenen Formstoffmasse mit heißer Luft, die über Einblasöffnungen in den This process can be accelerated by gassing the molding material mass shot into the mold cavity with hot air, which passes through injection openings in the mold cavity
Formhohlraum des Kernkastens geblasen und über die schlitzartigen Öffnungen abgeleitet wird. Mold cavity of the core box is blown and discharged through the slot-like openings.
Bei in der Praxis eingesetzten Kernschießmaschinen erfolgt die Wärmezufuhr über die Kernkastenteile, die üblicherweise aus einem ausreichend verschleißfesten und gut wärmeleit fähigen Werkzeugstahl, beispielsweise dem Stahl mit der Werkstoffnummer 1.2343, hergestellt sind. Für die Wärmezufuhr sind in die Kernkastenteile In core shooting machines used in practice, the heat is supplied via the core box parts, which are usually made of a sufficiently wear-resistant and good thermal conductivity tool steel, for example, the steel with the material number 1.2343. For the heat supply are in the core box parts
Bohrungen eingebracht, durch die ein ausreichend heißes Öl geleitet wird. Holes introduced through which a sufficiently hot oil is passed.
Ein solches Einbohren der jeweils geradlinig Such a boring of each straight
verlaufenden Ölleitungen in das jeweilige Kernkastenteil ist nicht nur herstellungstechnisch aufwändig, sondern schränkt aufgrund des Umstandes, dass die einzelnen Abschnitte der Ölleitung notwendig geradlinig verlaufen müssen, die Möglichkeiten der Gestaltung und Anordnung der im jeweiligen Kernkastenteil benötigten running oil lines in the respective core box part is not only manufacturing technically complex, but due to the fact that the individual sections of the oil line must necessarily be rectilinear, the possibilities of designing and arranging the required in each core box part
Entlüftungsschlitze ein. Ventilation slots on.
Vor diesem Hintergrund hat sich die Aufgabe ergeben, einen ölbeheizbaren Kernkasten zu schaffen, der sich mit vermindertem Aufwand herstellen lässt und dabei maximale Freiheiten bei der Gestaltung gewährt. Against this background, the task has emerged to create a ölbeheizbaren core box, which can be produced with reduced effort and thereby granted maximum freedom in the design.
Zur Lösung dieser Aufgabe schlägt die Erfindung einen Kernkasten mit den in Anspruch 1 angegebenen Merkmalen vor . To solve this problem, the invention proposes a core box with the features specified in claim 1.
Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen angegeben und werden nachfolgend wie der allgemeine Erfindungsgedanke im Einzelnen erläutert. Advantageous embodiments of the invention are specified in the dependent claims and are explained below as the general inventive concept in detail.
In Übereinstimmung mit dem eingangs erläuterten Stand der Technik umfasst auch ein erfindungsgemäßer In accordance with the prior art explained at the outset, an inventive device also comprises
Kernkasten zum Herstellen von Gießkernen aus einem Core box for producing cores from a
Formstoff, der aus einem Formsand und einem Binder sowie optionalen Additiven gemischt ist, mindestens zwei Molded material blended from a foundry sand and a binder and optional additives, at least two
Kernkastenteile, die gemeinsam die Form der Core box parts, which together form the shape of
herzustellenden Gießkerne abbilden, und eine Imagine casting cores to be produced, and one
Heizeinrichtung zum Beheizen der Kernkastenteile. Dabei weist die Heizeinrichtung mindestens eine Ölleitung auf, die in thermischem Kontakt mit mindestens einem der Kernkastenteile steht und an eine Ölversorgung angeschlossen ist, die zum Beheizen des Kernkastenteils die Ölleitung mit einem temperierten Öl speist. Heating device for heating the core box parts. In this case, the heating device has at least one oil line which is in thermal contact with at least one of the core box parts and to an oil supply is connected, which feeds the oil line with a tempered oil to heat the core box part.
Erfindungsgemäß ist nun mindestens eines der According to the invention, at least one of the
Kernkastenteile in eine die Form der herzustellenden Gießkerne abbildende Konturplatte und eine Heizplatte unterteilt, in der die Ölleitung vorgesehen ist, wobei sich die Heizplatte flächig über die Konturplatte erstreckt und an die Konturplatte angekoppelt ist. Kernkastenteile divided into a shape of the casting cores to be produced mapping contour plate and a heating plate in which the oil line is provided, wherein the heating plate extends over the contour plate surface and is coupled to the contour plate.
Durch die erfindungsgemäße Aufteilung des By the division of the invention
Kernkastenteils in eine Konturplatte und eine Heizplatte ist es möglich, sowohl die Konturplatte als auch die Heizplatte jeweils hinsichtlich ihres Verwendungszweck optimiert auszulegen und zu gestalten. Im Vergleich zu konventionellen ölbeheizten Kernkästen, bei denen das heiße Öl durch in das jeweilige Kernkastenteil Kernkastenteils in a contour plate and a heating plate, it is possible to design both the contour plate and the heating plate optimized in terms of their intended use and design. Compared to conventional oil-heated core boxes, where the hot oil through into the respective core box part
eingeformte Ölbohrungen geleitet wird, bietet sich bei einem erfindungsgemäßen Kernkasten eine unbegrenzte Gestaltungsfreiheit insbesondere hinsichtlich der molded oil holes is passed, offers in a core box according to the invention an unlimited freedom of design, especially in terms of
Positionierung von Schlitzdüsen bei der Konturplatte. So ist es bei einem erfindungsgemäßen Kernkasten problemlos möglich, beliebig viele Schlitzdüsen so zu Positioning of slot nozzles at the contour plate. So it is easily possible with a core box according to the invention, any number of slot nozzles so
positionieren, dass eine schnelle Abfuhr von position that a quick drain off
Feuchtigkeit aus den Gießkernen und damit einhergehend ein beschleunigter Aushärtungsprozess gewährleistet ist. Zudem kann das Konturteil für Verschleißreparaturen leicht demontiert, einer Reparatur beispielsweise durch spanabhebende Bearbeitung oder Schweißen unterzogen und wieder montiert werden. Die Gefahr, dass es dabei zu einer Beschädigung von ölführenden Leitungen kommt oder dass sich bei Schweißarbeiten Restöl entzündet, besteht dabei nicht. Moisture from the casting cores and, consequently, an accelerated curing process is ensured. In addition, the contour part for wear repairs can be easily dismantled, subjected to a repair, for example by machining or welding and re-assembled. The danger that this will lead to damage of oil-carrying lines or There is no residual oil ignited during welding work.
Die Erfindung ermöglicht so mit einfachen Mitteln die praxisgerechte Nutzung einer Ölheizung für die The invention thus makes it possible with simple means the practical use of an oil heater for the
Temperierung eines Kernkastens. Anders als bei Temperature control of a core box. Unlike
alternativen Erwärmungseinrichtungen, wie beispielsweise einer elektrischen Beheizung, zeichnet sich dabei eine auf einem erwärmten Öl basierende Beheizung der Alternative heating devices, such as an electric heater, characterized in that it is based on a heated oil heating the
konturgebenden Platten eines erfindungsgemäßen Contouring plates of an inventive
Kernkastens durch eine erhöhte Prozesssicherheit durch geringes Ausfallrisiko und lange Lebensdauer aus. Kernkastens by increased process reliability due to low failure risk and long life.
Gleichzeitig sind erfindungsgemäße Kernkästen durch Trennung von Konturplatten und Heizplatten leicht zu reinigen. Insbesondere eignet sich hierzu ein At the same core boxes according to the invention are easily cleaned by separation of contour plates and heating plates. In particular, this is a suitable
Ultraschallbad, was beispielsweise wegen der Gefahr des Eindringens von Wasser bei einer elektrisch betriebenen Heizung nicht in Frage kommt. Ultrasonic bath, which, for example, due to the risk of ingress of water in an electrically operated heating is out of the question.
Grundsätzlich ist es denkbar, die in der Heizplatte vorgesehene Ölleitung als separat vorgefertigte Leitung in ein geeignetes Trägermaterial einzubetten. Die In principle, it is conceivable to embed the oil line provided in the heating plate as a separately prefabricated line into a suitable carrier material. The
Heizplatte fungiert dann an erster Stelle als Halter und Schutz für die Ölleitung an dem Konturteil. Hot plate then acts in the first place as a holder and protection for the oil line to the Kontjud.
Selbstverständlich wird bei dieser Ausgestaltung die Ölleitung optimalerweise so angeordnet, dass ein Of course, in this embodiment, the oil line optimally arranged so that a
unmittelbarer thermischer Kontakt zwischen ihr und der Konturplatte besteht. there is direct thermal contact between it and the contour plate.
Ebenso ist es denkbar, die Ölleitung in eine Heizplatte einzuformen, die aus einem leicht bearbeitbaren, jedoch ausreichend temperaturbeständigen Material besteht. Hier bieten sich alle modernen Verfahren an, die es erlauben, Leitungen und Hohlräume in einer Materialplatte zu Likewise, it is conceivable to mold the oil line in a heating plate, which consists of an easily editable, but sufficiently temperature-resistant material. Here All modern methods are available, which allow cables and cavities in a material plate to
formen. Zum Einsatz kommen könnten hierzu beispielsweise geeignete dreidimensionale Druckverfahren oder to shape. For example, suitable three-dimensional printing processes or
desgleichen, die es erlauben, auch komplexe likewise, which allow it, even complex ones
Leitungsverläufe exakt in einem nach Abschluss des Line runs exactly in one after completion of the
Druckvorgangs kompakten Plattenkörper abzubilden. Imprint printing compact disk body.
Bei einem erfindungsgemäßen Kernkasten bestehen die In a core box according to the invention, the
Konturplatten selbstredend aus einem hoch Of course, contour plates from a high
temperaturleitenden Material, insbesondere einem für temperature-conductive material, in particular a for
diese Zwecke geeigneten und bewährten Werkzeugstahl der oben bereits erwähnten Art. Eine im Hinblick auf die These purposes suitable and proven tool steel of the kind already mentioned above. One with regard to
Effizienz der Wärmeübertragung und -Verteilung der Wärme auf die Konturplatte ergibt sich dabei dann, wenn die Efficiency of the heat transfer and distribution of heat on the contour plate is obtained when the
Heizplatte ebenfalls aus einem thermisch gut leitenden Heating plate also from a thermally well conductive
Material besteht. Da die Heizplatte jedoch weder hohen mechanischen noch extremen oder wechselnden thermischen Material exists. However, since the heating plate neither high mechanical nor extreme or changing thermal
Belastungen ausgesetzt ist, reichen hierzu preisgünstige Werkstoffe, wie ein niedrig legierter Stahl oder ein For this purpose, low-cost materials, such as a low-alloyed steel, are sufficient
Leichtmetallwerkstoff, insbesondere ein Al-Werkstoff , Light metal material, in particular an Al material,
aus. Insbesondere die Verwendung von out. In particular, the use of
Leichtmetallwerkstoffen wirkt sich zudem günstig auf das Gewicht eines erfindungsgemäßen Kernkastens aus.  Light metal materials also has a favorable effect on the weight of a core box according to the invention.
Soll die Ölleitung in das Material der Heizplatte eingeformt sein und sollen für das Einformen konventionell einformende, insbesondere spanabhebende Verfahren eingesetzt werden, so erweist es sich in herstellungstechnischer Sicht als If the oil line should be molded into the material of the heating plate and should be used for molding conventional einformende, especially machining processes, so it turns out in manufacturing technology point of view
vorteilhaft, wenn die Ölleitung nach Art eines Kanals in eine der Seiten der Heizplatte eingeformt ist, die sich parallel zur zugeordneten Konturplatte erstreckt. Der in die betreffende Plattenseite nach Art einer Nut eingeformte advantageous if the oil conduit is formed in the manner of a channel in one of the sides of the heating plate, which extends parallel to the associated contour plate. The in the concerned plate side molded in the manner of a groove
Ölkanal ist bei demontierter Heizplatte offen zugänglich und lässt sich daher nicht nur auf einfache Weise in das Material der Heizplatte einformen, sondern auch ebenso einfach Oil channel is openly accessible with disassembled hot plate and can therefore not only mold easily into the material of the hot plate, but also just as easy
reinigen . clean .
Ist der Ölleitungskanal in die der Konturplatte zugeordnete Seite der Heizplatte eingeformt, so deckt bei fertig If the oil duct is formed in the contour plate of the associated side of the heating plate, so when done covers
montiertem Kernkasten die Konturplatte den Ölleitungskanal an seiner offenen Seite ab. Dabei kann bei geeigneter Abdichtung der Fügefuge zwischen Heizplatte und Konturplatte ein mounted core box, the contour plate from the oil duct on its open side. In this case, with a suitable sealing of the joint between the heating plate and contour plate
direkter Kontakt zwischen dem warmen Öl und der Konturplatte bestehen . direct contact between the warm oil and the contour plate exist.
Denkbar ist es aber auch, eine gesonderte Dichtungsplatte zwischen der Heizplatte und der Konturplatte anzuordnen, um auf einfache Weise eine sichere Abdichtung zu gewährleisten. Eine solche Abdichtungsplatte kommt zweckmäßigerweise It is also conceivable, however, to arrange a separate sealing plate between the heating plate and the contour plate in order to ensure a secure seal in a simple manner. Such a sealing plate comes expediently
ebenfalls zum Einsatz, wenn die Ölleitung in eine von der Konturplatte abgewandte Seite der Heizplatte eingeformt ist. also used when the oil line is formed in a side facing away from the contour plate side of the heating plate.
Im Fall, dass eine Dichtungsplatte zwischen Heizplatte und Konturplatte angeordnet wird, besteht diese zweckmäßigerweise aus einem thermisch gut leitenden Material. In the event that a sealing plate between the heating plate and contour plate is arranged, this is suitably made of a thermally highly conductive material.
Eine gute Wärmeübertragung von der Heizplatte auf die Good heat transfer from the heating plate to the
Konturplatte kann dabei dadurch gewährleistet werden, dass die Konturplatte, die Heizplatte oder die Dichtungsplatte aus einem Material mit einer Wärmeleitfähigkeit λ von mindestens 40 W/(m*K) bestehen, wobei selbstverständlich mindestens diejenige Platte aus einem derart gut leitenden Material bestehen sollte, die gleichzeitig und jeweils direkt mit dem warmen Öl und der Konturplatte in Berührung kommt. Für die erfindungsgemäßen Zwecke ausreichende Wärmeleitfähigkeiten weisen alle eisen- und leichtmetallbasierten Legierungen auf. Contour plate can thereby be ensured that the contour plate, the heating plate or the sealing plate made of a material having a thermal conductivity λ of at least 40 W / (m * K), of course, at least one plate of such a highly conductive material should come into direct contact with the warm oil and the contour plate at the same time and in each case. For the purposes of the invention sufficient thermal conductivities have all iron and light metal based alloys.
Aufgrund seiner besonderen Gestaltungsmerkmale und der dadurch erzielten Vorteile eignet sich ein erfindungsgemäßer Kernkasten vor allem für Kernherstellungsverfahren, die eine Heißluftbegasung erfordern. Deshalb ist ein erfindungsgemäßer Kernkasten insbesondere für Kernherstellungsverfahren Due to its special design features and the advantages achieved thereby, a core box according to the invention is particularly suitable for core production processes requiring hot air aeration. Therefore, a core box according to the invention is particularly for core manufacturing processes
einsetzbar, bei denen anorganische Bindersysteme zum Einsatz kommen . can be used in which inorganic binder systems are used.
Nachfolgend wird die Erfindung anhand einer ein Hereinafter, the invention with reference to a
Ausführungsbeispiel zeigenden Zeichnung näher erläutert. Embodiment showing drawing explained in more detail.
Deren Figuren zeigen jeweils schematisch: Their figures show each schematically:
Fig. 1 einen Kernkasten in einem Längsschnitt; 1 shows a core box in a longitudinal section;
Fig. 2 eine Konturplatte des Kernkastens gemäß Fig. 1 2 shows a contour plate of the core box according to FIG. 1
in Draufsicht;  in plan view;
Fig. 3 eine Heizplatte des Kernkastens gemäß Fig. 1 in Fig. 3 is a heating plate of the core box of FIG. 1 in
Draufsicht ;  Top view ;
Fig. 4 ein Kernkastenteil des Kernkastens gemäß Fig. 1 4 a core box part of the core box according to FIG. 1
in einer seitlichen Ansicht.  in a side view.
Der Kernkasten 1 umfasst einen oberen Kernkastenteil 2 und einen unteren Kernkastenteil 3. Der obere Kernkastenteil 2 ist aus einer Konturplatte 4, die auf ihrer dem unteren Kernkastenteil 3 zugeordneten Seite konturgebende Formelemente 5,6 trägt, eine auf der Konturplatte 4 liegende Dichtungsplatte 7, eine auf der Dichtungsplatte 7 sitzende Heizplatte 8 und eine darauf abgestützte Schussplatte 9 zusammengesetzt. The core box 1 includes an upper core box part 2 and a lower core box part 3. The upper core box part 2 is composed of a contour plate 4, which carries contour-forming form elements 5, 6 on its side assigned to the lower core box part 3, a sealing plate 7 lying on the contour plate 4, a heating plate 8 seated on the sealing plate 7 and a weft plate 9 supported thereon ,
Die Schussplatte 9 ist über Koppelelemente in an sich bekannter Weise mittels Zapfenverbindungen 10,11 mit der Konturplatte 4 verkoppelt und dabei so ausgerichtet, dass die Schusstrichter 12 der Schussplatte 9 passgenau in den zugeordneten Schussöffnungen 13 sitzen, die in vertikaler Richtung fluchtend zueinander in die The weft plate 9 is coupled via coupling elements in a conventional manner by means of tenon joints 10,11 with the contour plate 4 and aligned so that the discharge funnel 12 of the weft plate 9 fit fit into the associated shot openings 13, which are aligned in the vertical direction to each other in the
Konturplatte 4, die Dichtungsplatte 7 und die Heizplatte 8 eingeformt sind. Contour plate 4, the sealing plate 7 and the heating plate 8 are formed.
Um ein lagerichtiges Ankoppeln an das untere To a correct position coupling to the lower
Kernkastenteil 3 zu gewährleisten, sind im Randbereich der Konturplatte 4 in Richtung des unteren To ensure core box part 3 are in the edge region of the contour plate 4 in the direction of the lower
Kernkastenteils 3 weisende Zapfen 14 befestigt, die beim Absenken des oberen Kernkastenteils 2 in Kernkastenteils 3 facing pin 14 attached to the lowering of the upper core box part 2 in
korrespondierend geformte Einsenkungen greifen, die im Randbereich der dem oberen Kernkastenteil 2 zugeordneten Oberseite des unteren Kernkastenteils 3 eingeformt sind. correspondingly shaped depressions engage, which are formed in the edge region of the upper core box part 2 associated upper side of the lower core box part 3.
Der untere Kernkastenteil 3 umfasst einen The lower core box part 3 comprises a
Unterteilrahmen 15, der an seiner dem oberen Lower frame 15, which at its upper
Kernkastenteils 2 zugeordneten Seite eine Konturplatte 16 des unteren Kastenteils 3 trägt. Die Konturplatte 16 trägt an ihrer dem oberen Kernkastenteil 2 zugeordneten freien Seite konturgebende Formelemente 17,18. Bei geschlossenem Kernkasten 1, d.h. in dem Stadium, in dem der obere Kernkasten 2 auf dem unteren Kernkasten 3 sitzt, umgrenzen die Konturplatten 4,16 einen Core box part 2 associated side carries a contour plate 16 of the lower box part 3. The contour plate 16 carries at its the upper core box part 2 associated free side contouring form elements 17,18. When the core box 1 is closed, that is to say in the stage in which the upper core box 2 is seated on the lower core box 3, the contour plates 4, 16 border one another
Formholraum, in dem mehrere Kerne, beispielsweise die Kerne für den Einlasskanal, den Auslasskanal, den Formholraum, in which several cores, for example, the cores for the inlet channel, the outlet channel, the
Wassermantel, den Deckel und den Ölraum eines Water jacket, the lid and the oil room one
Zylinderkopfs für einen Verbrennungsmotor gleichzeitig geschossen werden können. Die Formen der Kerne werden dabei durch die Formelemente 5,6,17,18 bestimmt, von denen in Fig. 2 der Übersichtlichkeit halber bei der Konturplatte 4 des oberen Kernkastenteils 2 nur zwei Formelemente 5,6 gezeigt sind. An den Konturplatten 4,16 vorgesehene Montageöffnungen 19 erlauben die Befestigung unterschiedlichster Formelemente, so dass mit dem Cylinder head for an internal combustion engine can be fired simultaneously. The shapes of the cores are determined by the form elements 5, 6, 17, 18, of which only two form elements 5, 6 are shown in FIG. 2 for the sake of clarity in the contour plate 4 of the upper core box part 2. On the contour plates 4,16 provided mounting holes 19 allow the attachment of different shape elements, so that with the
Kernkasten 1 unterschiedliche Gießkernprogramme erzeugt werden können. Core box 1 different core programs can be generated.
Im oberen und unteren Kernkastenteil 2,3 sind jeweils konventionell ausgebildete Schlitzdüsen 20,21 In the upper and lower core box part 2,3 are conventionally formed slot nozzles 20,21 respectively
angeordnet, die beim oberen Kernkastenteil 2 von dessen Oberseite bis zur dem unteren Kernkastenteil 3 arranged at the upper core box part 2 from the top to the lower core box part. 3
zugeordneten Seite der Konturplatte 4 und beim unteren Kernkastenteil 3 von dessen Unterseite bis zur dem oberen Kastenteil 2 zugeordneten Seite der Konturplatte 16 reichen. Auf diese Weise können bei geschlossenem Kernkasten 1 im von den Konturplatten 4,16 dann associated side of the contour plate 4 and the lower core box part 3 of the underside to the upper box part 2 associated side of the contour plate 16 rich. In this way, with closed core box 1 in the contour plates 4.16 then
umschlossenen Formhohlraum vorhandene oder sich bildende Gase über die Schlitzdüsen entweichen. enclosed mold cavity existing or forming gases escape through the slot nozzles.
Die Konturplatte 16 sitzt über eine Dichtungsplatte 22 auf einer Heizplatte 23 des unteren Kernkastenteils 3. Das aus Konturplatte 16, Dichtungsplatte 22 und Heizplatte 23 gebildete Paket sitzt in einer Aufnahme des Unterteilrahmens 15. The contour plate 16 is seated on a sealing plate 22 on a heating plate 23 of the lower core box part 3. The contour plate 16, sealing plate 22 and Heating plate 23 formed package sits in a receptacle of the lower frame 15th
Darunter ist eine Auswerferplatte 24 angeordnet, die in Richtung der Konturplatte 16 weisende Ausstoßer 25 trägt. Die Ausstoßer 25 greifen durch in die untere Konturplatte 16 eingeformte Durchgangsöffnungen. Nach dem Aushärten der in dem Kernkasten 1 geformten Below this, an ejector plate 24 is arranged, which carries in the direction of the contour plate 16 facing ejector 25. The ejectors 25 engage through through holes formed in the lower contour plate 16. After curing, the molded in the core box 1
Gießkerne wird die Auswerferplatte 24 bei geöffnetem Kernkasten 1 in Richtung der Konturplatte 16 angehoben, so dass die Ausstoßer 25 die fertigen Gießkerne von den Formteilen 17,18 abheben. Die fertigen Gießkerne können dann frei aus dem Kernkasten 1 entnommen werden. Casting cores, the ejector plate 24 is raised with the core box 1 open in the direction of the contour plate 16, so that the ejector 25 lift the finished cores from the moldings 17,18. The finished casting cores can then be removed freely from the core box 1.
Während die Konturplatten 4,16 mit den von ihnen While the contour plates 4,16 with those of them
getragenen Formelementen 5,6,17,18 jeweils aus einem hochwertigen, verschleiß- und temperaturbeständigen Werkzeugstahl bestehen, bestehen die Heizplatten 8,23 jeweils aus einem Aluminiumwerkstoff. Alternativ können sie auch aus einem konventionellen unlegierten Baustahl, wie beispielsweise dem Stahl mit der Werkstoffnummer 1.0050, bestehen. worn mold elements 5,6,17,18 each consist of a high-quality, wear and temperature-resistant tool steel, the heating plates 8,23 each consist of an aluminum material. Alternatively, they may also consist of a conventional unalloyed structural steel, such as the steel with the material number 1.0050.
In die der Konturplatte 4 zugeordnete Seite 26 der in Fig. 3 dargestellten Heizplatte 8 des oberen Kernkastens 2 ist eine Ölleitung 27 in Form eines zu der In the contour plate 4 associated side 26 of the heating plate 8 shown in Fig. 3 8 of the upper core box 2 is an oil line 27 in the form of a to the
betreffenden Seite offenen Kanals eingefräst. Die milled in the relevant side of the open channel. The
Ölleitung 27 ist dabei in einer Vielzahl von Windungen über die Seite 26 so geführt, dass einerseits sämtliche der im Kernschießbetrieb temperaturkritischen Bereiche der Konturplatte 4 abgedeckt werden, andererseits aber auch die Bereiche umgangen werden, durch die die Schlitzdüsen 20,21 geführt sind. Der Zufluss 28 und der Abfluss 29 sind an eine hier nicht dargestellte Oil line 27 is guided over the side 26 in a plurality of turns, that on the one hand all of the temperature critical in Kernschießbetrieb areas of the contour plate 4 are covered, on the other hand, but also the areas are bypassed by the Slot nozzles 20,21 are performed. The inflow 28 and the outflow 29 are connected to a not shown here
Ölversorgung angeschlossen, die im Kreislauf auf die geforderte Temperatur erwärmtes Öl durch die Ölleitung 27 fördert. Oil supply connected, which promotes in the circuit to the required temperature heated oil through the oil line 27.
In die Heizplatte 23 ist in entsprechender Weise eine Ölleitung 30 eingeformt worden. In the heating plate 23, an oil line 30 has been formed in a corresponding manner.
Die Dichtungsplatten 7,22 bestehen ebenfalls aus einem hoch temperaturleitenden Material, wie einem Al- Werkstoff oder einem geeigneten Stahl, , so dass die vom durch die Ölleitung 27,30 strömenden, erwärmten Öl mitgeführte Wärme annähernd verlustfrei auf die The sealing plates 7,22 are also made of a high temperature conductive material, such as an Al material or a suitable steel, so that the entrained by the flowing through the oil line 27,30, heated oil heat almost lossless on the
jeweilige Konturplatte 4,16 übertragen wird. respective contour plate 4,16 is transmitted.
Für die Herstellung der schon erwähnten Kerne in dem Kernkasten 1 werden 24 kg Quarzsand in einem Mischer mit 2,2 % eines anorganischen Binders und 0,9 % eines zur Verbesserung der Fließeigenschaften zugegebenen For the production of the already mentioned cores in the core box 1, 24 kg of quartz sand are mixed in a mixer with 2.2% of an inorganic binder and 0.9% of one to improve the flow properties
Pulveradditivs gemischt. Dazu wird zunächst der Sand mit dem Pulveradditiv vorgelegt und anschließend unter laufendem Mischer die flüssige Binderkomponente Powder additive mixed. For this purpose, the sand is first presented with the powder additive and then under running mixer, the liquid binder component
zugesetzt . added.
Nach einer Mischzeit von ca. 30 s wird die so erhaltene Formstoffmischung in einen Vorratsbunker einer After a mixing time of about 30 s, the molding material mixture thus obtained in a storage bin a
konventionell aufgebauten, jedoch mit dem Kernkasten 1 ausgestatteten Kernschießmaschine überführt. conventionally constructed, but equipped with the core box 1 core shooter transferred.
Die Konturplatten 4,16 und die von ihnen getragenen Formelemente 5,6,17,18 werden durch die Heizplatten 8,23 auf eine Temperatur von 130 °C vorgeheizt. Dann wird die Formstoffmischung mittels mit 5 bar beaufschlagter The contour plates 4, 16 and the mold elements 5, 6, 17, 18 carried by them are replaced by the heating plates 8, 23 preheated to a temperature of 130 ° C. Then the molding material mixture is acted upon by 5 bar
Druckluft in den Formhohlraum des geschlossenen Compressed air in the mold cavity of the closed
Kernkastens 1 geschossen und verbleibt dort für 32 s. Core box 1 shot and remains there for 32 s.
Zur Beschleunigung der Aushärtung wird 2 s nach demTo accelerate the curing is 2 s after the
Einschuss Heißluft mit einem Druck von 3,5 bar und einerShot hot air at a pressure of 3.5 bar and a
Temperatur von 160 °C beim Eintritt in das Werkzeug für 30 s durch den Kernkasten 1 geleitet. Temperature of 160 ° C when entering the tool for 30 s passed through the core box 1.
Nach abgeschlossener Härtezeit wird der Kernkasten 1 geöffnet und die Ausstoßer 25 werden betätigt. Die fertig ausgehärteten Kerne können nun entnommen werden. After completion of the curing time, the core box 1 is opened and the ejector 25 are actuated. The completely hardened cores can now be removed.
In der voranstehend beschriebenen Weise durchgeführte praktische Versuche haben gezeigt, dass bei dem Practical experiments carried out in the manner described above have shown that in the
erfindungsgemäßen Kernkasten 1 an beliebigen Positionen Schlitzdüsen zur Optimierung der Entlüftung eingebracht werden können. Die Erfindung erlaubt es somit, auch bei Verwendung einer Ölheizung zum Beheizen des Kernkastens 1 dessen Konturplatten 4,16 und die von ihnen getragenen Formelemente 5,6,17,18 genauso frei auszulegen, wie es Kernkästen gewohnt ist, die für das so genannte "Cold- Box-Verfahren" eingesetzt werden, bei dem keine core box 1 according to the invention at any position slot nozzles can be introduced to optimize the vent. Thus, even with the use of an oil heater for heating the core box 1, the invention makes it possible to design its contour plates 4, 16 and the molded elements 5, 6, 17, 18 carried by them as freely as it is used to core boxes, which are used for the so-called "core boxes". Cold box method "are used in which no
Beheizung erforderlich ist, sondern bei dem die Heating is required, but in which the
Aushärtung durch eine chemische Reaktion in Folge einer Begasung mit einem Reaktionsgas erfolgt. Curing takes place by a chemical reaction as a result of gassing with a reaction gas.
Die durch die Erfindung eröffnete Freiheit der The freedom of the invention opened by the invention
Formgebung eröffnet hier die Möglichkeit, in den durch die Experimente ermittelten, für die Abfuhr der Shaping here opens the possibility, in the determined by the experiments, for the removal of the
Feuchtigkeit kritischen Kondensationszonen der im Kernkasten 1 erzeugten Kerne zusätzliche Schlitzdüsen einzubringen. Durch diese Optimierung der Kernkasten Be-/Entlüftung konnte schon nach der ersten Moisture critical condensation zones of the Core box 1 cores generated to introduce additional slot nozzles. Through this optimization of the core box ventilation could already after the first
Optimierungsschleife die Heißluftspülzeit und damit die Taktzeit um 5 s verkürzt werden. Optimization loop the Heißluftspülzeit and thus the cycle time by 5 s be shortened.
Kernkasten core box
oberer Kernkastenteil upper core box part
unterer Kernkastenteil lower core box part
Konturplatte des oberen Kernkastenteils 2  Contour plate of the upper core box part 2
konturgebende Formelemente des oberen Kernkastenteils 2Contouring form elements of the upper core box part. 2
Dichtungsplatte des oberen Kernkastenteils 2 Sealing plate of the upper core box part 2
Heizplatte des oberen Kernkastenteils 2  Heating plate of the upper core box part 2
Schussplatte des oberen Kernkastenteils 2  Shooting plate of the upper core box part 2
Zapfenverbindungen  tenon joints
Schusstrichter der Schussplatte 9  Shotgun of the shooting plate 9
Schussöffnungen  shot holes
Zapfen  spigot
Unterteilrahmen des unteren Kernkastenteils 3  Lower frame of the lower core box part 3
Konturplatte des unteren Kernkastenteils 3  Contour plate of the lower core box part 3
konturgebende Formelemente des unteren KernkastenteilsContouring features of the lower core box part
Montageöffnungen mounting holes
Schlitzdüsen  slot dies
Schlitzdüsen  slot dies
Dichtungsplatte des unteren Kernkastenteils 3  Sealing plate of the lower core box part 3
Heizplatte des unteren Kernkastenteils 3 Heating plate of the lower core box part 3
Auswerferplatte ejector
Ausstoßer ejector
der Konturplatte 4 zugeordnete Seite der Heizplatte 8 Ölleitung der Heizplatte 8 the contour plate 4 associated side of the heating plate 8 oil line of the heating plate. 8
Zufluss der Ölleitung 27 Inflow of the oil line 27
Abfluss der Ölleitung 27 Outflow of the oil line 27
Ölleitung der Heizplatte 23 Oil pipe of the heating plate 23

Claims

P AT E N T AN S P R Ü C H E  P AT E N T AT S P R O C H E
1. Kernkasten zum Herstellen von Gießkernen aus einem durch Wärmezufuhr verfestigenden Formstoff, umfassend A core box for producing cores from a thermosetting molding material, comprising
mindestens zwei Kernkastenteile (2,3), die gemeinsam die Form der herzustellenden Gießkerne abbilden, und eine Heizeinrichtung zum Beheizen der Kernkastenteile (2,3), wobei die Heizeinrichtung mindestens eine Ölleitung (27,30) aufweist, die in thermischem Kontakt mit  at least two core box parts (2, 3), which together form the shape of the casting cores to be produced, and a heating device for heating the core box parts (2, 3), the heating device having at least one oil line (27, 30) in thermal contact with
mindestens einem der Kernkastenteile (2,3) steht und an eine Ölversorgung angeschlossen ist, die zum Beheizen des Kernkastenteils (2,3) die Ölleitung (27,30) mit einem temperierten Öl speist, d a d u r c h  at least one of the core box parts (2,3) and is connected to an oil supply, which feeds the oil line (27,30) with a tempered oil for heating the core box part (2,3), d a d u r c h
g e k e n n z e i c h n e t, d a s s mindestens eines der Kernkastenteile (2,3) in eine die Form der  at least one of the core box parts (2, 3) is in one of the form of
herzustellenden Gießkerne abbildende Konturplatte (4,16) und eine an die Konturplatte (4,16) angekoppelte  to be produced casting cores imaging contour plate (4,16) and one to the contour plate (4,16) coupled
Heizplatte (8,23) aufgeteilt ist, die sich flächig über die Konturplatte (4,16) erstreckt und in der die  Hot plate (8,23) is divided, which extends over the contour plate (4,16) and in which the
Ölleitung (27,30) vorgesehen ist.  Oil line (27,30) is provided.
2. Kernkasten nach Anspruch 1, d a d u r c h 2. core box according to claim 1, d a d u r c h
g e k e n n z e i c h n e t, d a s s die Heizplatte (8,23) aus einem thermisch leitenden Material besteht. Kernkasten nach einem der voranstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, d a s s die Ölleitung (27,30) in das Material der Heizplatte (8,23) eingeformt ist. characterized in that the heating plate (8,23) consists of a thermally conductive material. Core box according to one of the preceding claims, characterized in that the oil line (27,30) is formed in the material of the heating plate (8,23).
Kernkasten nach Anspruch 3, d a d u r c h Core box according to claim 3, d a d u r c h
g e k e n n z e i c h n e t, d a s s die Ölleitung (27,30) nach Art eines Kanals in eine der Seiten (26) der Heizplatte (8,23) eingeformt ist, die sich parallel zur zugeordneten Konturplatte (4,16) erstreckt. The oil line (27, 30) is shaped in the manner of a channel into one of the sides (26) of the heating plate (8, 23), which extends parallel to the associated contour plate (4, 16).
Kernkasten nach Anspruch 4, d a d u r c h Core box according to claim 4, d a d u r c h
g e k e n n z e i c h n e t, d a s s die Ölleitung (27,30) in diejenige Seite (26) der Heizplatte (8,23) eingeformt ist, die der Konturplatte (4,16) zugeordnet ist . The oil line (27, 30) is formed in the side (26) of the heating plate (8, 23) that is associated with the contour plate (4, 16).
Kernkasten nach Anspruch 4 oder 5, d a d u r c h g e k e n n z e i c h n e t, d a s s auf der Seite (26) der Heizplatte (8,23), in die der Ölkanal (27,30) eingeformt ist, eine Dichtungsplatte (7,22) liegt. Core box according to claim 4 or 5, wherein a sealing plate (7, 22) is located on the side (26) of the heating plate (8, 23) into which the oil channel (27, 30) is formed.
Kernkasten nach Anspruch 6, d a d u r c h Core box according to claim 6, d a d u r c h
g e k e n n z e i c h n e t, d a s s die e n c ia n, the s
Dichtungsplatte (7,22) aus einem thermisch leitenden Material besteht. Seal plate (7,22) consists of a thermally conductive material.
8. Kernkasten nach einem der voranstehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t, d a s s die Konturplatte (4,16), die Heizplatte (8,23) oder die Dichtungsplatte (7,22) aus einem Material mit einer Wärmeleitfähigkeit λ von mindestens 40 W/ (m*K) bestehen. 8. core box according to one of the preceding claims, characterized in that the contour plate (4,16), the heating plate (8,23) or the sealing plate (7,22) made of a material having a thermal conductivity λ of at least 40 W / (m * K) exist.
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PL3285941T3 (en) 2021-05-31
WO2016170409A8 (en) 2017-11-23
EP3285941B8 (en) 2021-03-17
TWI611850B (en) 2018-01-21
TW201701967A (en) 2017-01-16
US20180141109A1 (en) 2018-05-24
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DE102015106126A1 (en) 2016-10-27
EP3285941B1 (en) 2020-11-25

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