EP1338360B1 - Filling chamber for a diecasting machine - Google Patents

Filling chamber for a diecasting machine Download PDF

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Publication number
EP1338360B1
EP1338360B1 EP03002904A EP03002904A EP1338360B1 EP 1338360 B1 EP1338360 B1 EP 1338360B1 EP 03002904 A EP03002904 A EP 03002904A EP 03002904 A EP03002904 A EP 03002904A EP 1338360 B1 EP1338360 B1 EP 1338360B1
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EP
European Patent Office
Prior art keywords
filling chamber
cooling device
filling
region
feed
Prior art date
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EP03002904A
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German (de)
French (fr)
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EP1338360A2 (en
EP1338360A3 (en
Inventor
Hugo J. Kunz
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Wieland Werke AG
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Wieland Werke AG
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Publication of EP1338360A3 publication Critical patent/EP1338360A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2023—Nozzles or shot sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2038—Heating, cooling or lubricating the injection unit

Definitions

  • the invention relates to a filling chamber for a die-casting machine with a feed opening for liquid casting material, wherein a cooling device is provided in the filling chamber wall at least in the area opposite the feed opening.
  • the inner surface of a filling chamber of a die casting machine serving as a sliding surface for the die casting piston must be absolutely smooth so as not to hinder the movement of the die casting piston. Also, an expansion of the inner diameter of the filling chamber is not tolerable, as in a gap between the piston and the Gufittwand hot casting material in the forward movement of the die casting piston piston side splash out of the filling chamber and can lead to injury to operating personnel. When filling the hot casting material through the feed opening, this impinges on the opposite side of the filling chamber inner surface. Due to the great heat, the filling chamber expands at this point. The filling chamber deforms and leaching occurs in the pouring area by alloying aluminum and steel.
  • filling chambers are therefore provided with cooling devices at least in the region of the feed opening.
  • cooling devices for this purpose in the filling chamber wall in the axial direction from the front side holes are introduced, which are interconnected by transverse bores and thus form a guide channel for a coolant.
  • this type of cooling device is very complicated and expensive to manufacture, since the entire filling chamber must be processed, which is possible only with special jigs and special machines.
  • the filling chamber is cooled directly, so that it can come in the bore areas due to the thermal stresses to cracking and leakage of cooling medium.
  • the present invention has for its object to provide a filling chamber with a structurally simple and effective cooling device.
  • the disc is a relatively small component compared to the entire filling chamber and thus can be easily processed on a machine tool for the production of the coolant channels or channels. Subsequently, the disc is inserted from the outside into the filling chamber wall in a recess provided for this purpose and bolted to the filling chamber. The arrangement of the disc opposite the feed port for the hot casting material, the cooling device unfolds its effect at the point where the greatest thermal stresses caused by the impact of the hot casting material.
  • the disc may preferably have a helical supply and return passage for the coolant, which are provided with corresponding outer terminals. Due to the spiral-shaped guidance of the feed and return channel, a very uniform and indirect cooling occurs over the entire surface of the disk.
  • the disc can also be curved in accordance with the curvature of the filling chamber wall, so that also takes place by a uniform cooling of the impingement of the hot casting material in the filling chamber.
  • heating or preheating of the filling chamber can of course also be carried out by passing through the guide channel a correspondingly heated medium.
  • the filling chamber can also have a cooling device in the connection region of the casting mold. Even there, it comes through the piston pressure and the hot casting material to strong thermal loads, which are reduced by the cooling device. Cooling also prevents the sprue from bursting when the mold is opened.
  • the cooling device may be formed in the region of the injection mold of at least one externally placed on the Medauerwand and provided with at least one guide channel for a coolant bushing.
  • the guide channel is incorporated in the at least one socket, which in comparison to the entire filling chamber again relatively small components represent easier to machine in a machine tool than the entire filling chamber.
  • the cooling also acts indirectly on the filling chamber, so that there can be no cracking.
  • the cooling device is formed by two nested bushes which enclose between them a helical supply and return channel with corresponding external connections.
  • the supply and return channel is simply made by a corresponding surface treatment of the outside of the inner sleeve and the inside of the outer sleeve.
  • the clamping ring may have a widening in the direction of the filling chamber, preferably flared inner diameter.
  • the clamping ring may be provided with at least one radial opening for introducing casting material into the injection mold. The incorporation of the radial openings is much simpler compared to a filling chamber without such a ring, since here too only the ring and not the entire filling chamber has to be processed.
  • the filling chamber 10 from Fig. 1 is a filling chamber for a vacuum die casting machine, wherein the liquid casting material is sucked through a feed opening 11 on the underside of the filling chamber by the prevailing in the filling chamber vacuum.
  • the casting material comes directly from a melting furnace. Due to the prevailing negative pressure, the sucked material is thrown against the feed opening 11 opposite side 12 of the Golfffleinnenraums 13.
  • this region 12 of the filling chamber interior 13 is exposed to strong thermal stresses.
  • a disc 14 which is traversed by a coolant channel 15, arranged as a cooling device.
  • a coolant channel 15 arranged as a cooling device.
  • the guide channel 15 is divided into a spiral feed channel 16 and a spiral return channel 17.
  • This type of arrangement of supply and return duct results in a very uniform temperature distribution over the entire disk surface.
  • a heated medium can be passed through the channels 16, 17, for example, to preheat the filling chamber 10.
  • the disc 14 is curved in itself, ie the curvature of the filling chamber 10 adapted. Besides, it is off Fig. 2 it can be seen that it is placed in a flattened area of the filling chamber 10.
  • shown filling chamber 10 has not only in the feed opening 11 opposite region 12 a cooling device, but also in its front region 18, in which the connection of the mold takes place.
  • the provided in this area 18 cooling device 19 is formed in the example shown by three nested bushes 19.1, 19.2 and 19.3.
  • the three bushings 19.1, 19.2 and 19.3 enclose between them a helical feed passage 20 and a helical return passage 21 for a coolant.
  • the feed channel 20 is connected to an inlet port 22 and the return 21 to an outlet 23.
  • the bushings 19.1, 19.2 and 19.3 are held by a mounted on the front side of the filling chamber 10 clamping ring 24 on the filling chamber 10.
  • the clamping ring 24 in this case has a conically widening in the direction of filling chamber inner diameter. This prevents that the end-side edge of the filling chamber and also the clamping ring 24 bend due to the prevailing high pressures in the piston movement to the outside.
  • elastic rings 25 for example made of rubber or copper are used, whose cross section in Fig. 4 is shown in enlarged form. These rings 25 are used to compensate for tolerances between the filling chamber 10 and a mold not shown here. The filling chamber 10 and the mold are made so that there is a small gap between them is, which is bridged by the ring 25.
  • the ring 25 can be compressed due to its shape as well as the shape of the slightly inwardly widening groove 26, so that there is no upsetting of the end face the filling chamber 10 comes.
  • the filling chamber 10 has an extension ring 27, which facilitates the insertion of the die-casting in the filling chamber 10 and also in the fully retracted state of Druckg bankkolbens the sealing surface between die casting piston and inner wall of the filling chamber 10 is increased, so that in the interior 13 of the filling chamber 10 prevailing vacuum can be reliably maintained.
  • Fig. 5 is one of the Fig. 1 corresponding partial longitudinal section through a second filling chamber 10 'of a die casting machine, in which the hot casting material is filled without vacuum through an upper opening 11' in the filling chamber 10 'shown.
  • the area which is subjected to the highest thermal stress is again arranged at the point 12 'opposite the filling opening 11', but now on the underside of the filling chamber 10 '.
  • the cooling device 14' in the form of an otherwise identical or similar formable disc 14 'at the bottom of the filling chamber 10' is executed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Filling chamber comprises: a feed opening (11) for liquid casting material; and a cooling device (14) arranged in the region (12) lying opposite the opening (11). The cooling device is formed by a plate which can be inserted into the wall of the filling chamber in the region lying opposite the feed opening. The plate is provided with guiding channels. Preferred Features: The plate has a spiral-like feed channel (16) and a recycle channel (17) for the coolant, the channels being provided with corresponding external connections. The plate is bent corresponding to the bend in the filling chamber wall.

Description

Die Erfindung betrifft eine Füllkammer für eine Druckgießmaschine mit einer Zuführöffnung für flüssiges Gießmaterial, wobei in der Füllkammerwand mindestens in dem der Zuführöffnung gegenüberliegenden Bereich eine Kühleinrichtung vorgesehen ist.The invention relates to a filling chamber for a die-casting machine with a feed opening for liquid casting material, wherein a cooling device is provided in the filling chamber wall at least in the area opposite the feed opening.

Die Innenfläche einer Füllkammer einer Druckgießmaschine, die als Gleitfläche für den Druckgießkolben dient, muss absolut glatt sein, um die Bewegung des Druckgießkolbens nicht zu behindern. Auch eine Ausdehnung des Innendurchmessers der Füllkammer ist nicht tolerierbar, da in einem Spalt zwischen dem Kolben und der Füllkammerinnenwand heißes Gießmaterial bei der Vorwärtsbewegung des Druckgießkolbens kolbenseitig aus der Füllkammer herausspritzen und zu Verletzungen des Bedienpersonals führen kann. Beim Einfüllen des heißen Gießmaterials durch die Zuführöffnung trifft dieses auf der gegenüberliegenden Seite der Füllkammerinnenfläche auf. Durch die große Hitze dehnt sich die Füllkammer an dieser Stelle aus. Die Füllkammer deformiert sich, und es entstehen Auswaschungen im Eingießbereich durch Legieren von Aluminium und Stahl. Um diesen Effekten entgegenzuwirken, sind Füllkammern daher mindestens im Bereich der Zuführöffnung mit Kühleinrichtungen versehen. Bei den bekannten Füllkammern werden hierzu in die Füllkammerwand in axialer Richtung von der Stirnseite her Bohrungen eingebracht, die durch Querbohrungen miteinander verbunden werden und somit einen Führungskanal für ein Kühlmittel bilden. Diese Art von Kühleinrichtung ist jedoch sehr aufwendig und teuer in der Herstellung, da die gesamte Füllkammer bearbeitet werden muss, was nur mit Spezialspannvorrichtungen und Spezialmaschinen möglich ist. Außerdem wird die Füllkammer direkt gekühlt, sodass es in den Bohrungsbereichen aufgrund der thermischen Spannungen zu Rissbildungen und zum Austritt von Kühlmedium kommen kann.The inner surface of a filling chamber of a die casting machine serving as a sliding surface for the die casting piston must be absolutely smooth so as not to hinder the movement of the die casting piston. Also, an expansion of the inner diameter of the filling chamber is not tolerable, as in a gap between the piston and the Füllkammerinnenwand hot casting material in the forward movement of the die casting piston piston side splash out of the filling chamber and can lead to injury to operating personnel. When filling the hot casting material through the feed opening, this impinges on the opposite side of the filling chamber inner surface. Due to the great heat, the filling chamber expands at this point. The filling chamber deforms and leaching occurs in the pouring area by alloying aluminum and steel. To counteract these effects, filling chambers are therefore provided with cooling devices at least in the region of the feed opening. In the known filling chambers for this purpose in the filling chamber wall in the axial direction from the front side holes are introduced, which are interconnected by transverse bores and thus form a guide channel for a coolant. However, this type of cooling device is very complicated and expensive to manufacture, since the entire filling chamber must be processed, which is possible only with special jigs and special machines. In addition, the filling chamber is cooled directly, so that it can come in the bore areas due to the thermal stresses to cracking and leakage of cooling medium.

Aus der Druckschrift US 3,516,480 ist eine Füllkammer einer Druckgießmaschine mit einer außenseitigen Kühleinrichtung bekannt. Die Kühleinrichtung verläuft in axialer Richtung in Form eines schmalen Einsatzes in einer Nut über den gesamten Bodenbereich der Kammer. Zur Kühlung ist vorgesehen, in zwei längs im Einsatz verlaufenden Kanälen Kühlmedium hindurchzuleiten.From the publication US 3,516,480 is a filling chamber of a die casting machine with an outside cooling device known. The cooling device extends in the axial direction in the form of a narrow insert in a groove over the entire bottom region of the chamber. For cooling, it is provided to pass cooling medium through two channels extending longitudinally in the insert.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Füllkammer mit einer konstruktiv einfachen und wirksamen Kühleinrichtung zu schaffen.The present invention has for its object to provide a filling chamber with a structurally simple and effective cooling device.

Die Aufgabe wird mit einer Füllkammer der eingangs genannten Art gelöst, wie in Anspruch 1 definiert ist, wobei die Kühleinrichtung in dem der Zuführöffnung gegenüberliegenden Bereich von einer in die Füllkammerwand einsetzbaren kreisförmigen Scheibe, die mit mindestens einem Führungskanal für ein Kühlmittel versehen ist, gebildet ist.The object is achieved with a filling chamber of the type mentioned, as defined in claim 1, wherein the cooling device is formed in the region opposite to the feed opening of an insertable into the Füllkammerwand circular disc which is provided with at least one guide channel for a coolant ,

Die Scheibe ist im Vergleich zur gesamten Füllkammer ein relativ kleines Bauteil und kann somit leicht auf einer Werkzeugmaschine zur Herstellung des oder der Kühlmittelkanäle bearbeitet werden. Anschließend wird die Scheibe von außen in die Füllkammerwand in eine dafür vorgesehene Aussparung eingesetzt und mit der Füllkammer verschraubt. Durch die Anordnung der Scheibe gegenüberliegend der Zuführöffnung für das heiße Gießmaterial entfaltet die Kühleinrichtung ihre Wirkung an der Stelle, an der die größten thermischen Spannungen durch das Auftreffen des heißen Gießmaterials entstehen.The disc is a relatively small component compared to the entire filling chamber and thus can be easily processed on a machine tool for the production of the coolant channels or channels. Subsequently, the disc is inserted from the outside into the filling chamber wall in a recess provided for this purpose and bolted to the filling chamber. The arrangement of the disc opposite the feed port for the hot casting material, the cooling device unfolds its effect at the point where the greatest thermal stresses caused by the impact of the hot casting material.

Die Scheibe kann vorzugsweise einen spiralförmigen Zuführ- und Rücklaufkanal für das Kühlmittel, die mit entsprechenden äußeren Anschlüssen versehen sind, aufweisen. Durch die spiralförmige Führung des Zuführ- und Rücklaufkanals kommt es über die gesamte Oberfläche der Scheibe zu einer sehr gleichmäßigen und indirekten Kühlung. Vorzugsweise kann die Scheibe außerdem in sich entsprechend der Wölbung der Füllkammerwand gewölbt sein, sodass auch dadurch eine gleichmäßige Kühlung des Auftreffbereichs des heißen Gießmaterials in der Füllkammer erfolgt.The disc may preferably have a helical supply and return passage for the coolant, which are provided with corresponding outer terminals. Due to the spiral-shaped guidance of the feed and return channel, a very uniform and indirect cooling occurs over the entire surface of the disk. Preferably, the disc can also be curved in accordance with the curvature of the filling chamber wall, so that also takes place by a uniform cooling of the impingement of the hot casting material in the filling chamber.

Anstelle einer Kühlung kann selbstverständlich auch eine Erwärmung bzw. eine Vorwärmung der Füllkammer vorgenommen werden, indem durch den Führungskanal ein entsprechend aufgeheiztes Medium hindurchgeleitet wird.Instead of cooling, heating or preheating of the filling chamber can of course also be carried out by passing through the guide channel a correspondingly heated medium.

Die Füllkammer kann außer einer Kühleinrichtung im Einfüllbereich des heißen Gießmaterials auch im Anschlussbereich der Gießform eine Kühleinrichtung aufweisen. Auch dort kommt es durch den Kolbendruck und das heiße Gießmaterial zu starken thermischen Belastungen, die durch die Kühleinrichtung reduziert werden. Durch die Kühlung lässt sich außerdem ein Platzen des Angusses beim Öffnen der Form vermeiden.In addition to a cooling device in the filling region of the hot casting material, the filling chamber can also have a cooling device in the connection region of the casting mold. Even there, it comes through the piston pressure and the hot casting material to strong thermal loads, which are reduced by the cooling device. Cooling also prevents the sprue from bursting when the mold is opened.

Vorzugsweise kann dabei die Kühleinrichtung im Bereich der Spritzgießform von mindestens einer außen auf die Füllkammerwand aufgesetzten und mit mindestens einem Führungskanal für ein Kühlmittel versehenen Buchse gebildet sein. Der Führungskanal ist in die mindestens eine Buchse eingearbeitet, die im Vergleich zur gesamten Füllkammer wieder relativ kleine Bauteile darstellen, die leichter in einer Werkzeugmaschine bearbeitet werden können als die gesamte Füllkammer. Außerdem wirkt auch hier die Kühlung indirekt auf die Füllkammer ein, sodass es zu keinen Rissbildungen kommen kann.Preferably, the cooling device may be formed in the region of the injection mold of at least one externally placed on the Füllkammerwand and provided with at least one guide channel for a coolant bushing. The guide channel is incorporated in the at least one socket, which in comparison to the entire filling chamber again relatively small components represent easier to machine in a machine tool than the entire filling chamber. In addition, the cooling also acts indirectly on the filling chamber, so that there can be no cracking.

Bei einer bevorzugten Ausgestaltung wird die Kühleinrichtung von zwei ineinander gesteckten Buchsen, die zwischen sich einen spiralförmigen Zuführ- und Rücklaufkanal mit entsprechenden Außenanschlüssen einschließen, gebildet. Der Zuführ- und Rücklaufkanal wird einfach durch eine entsprechende Oberflächenbearbeitung der Außenseite der inneren Buchse sowie der Innenseite der äußeren Buchse hergestellt.In a preferred embodiment, the cooling device is formed by two nested bushes which enclose between them a helical supply and return channel with corresponding external connections. The supply and return channel is simply made by a corresponding surface treatment of the outside of the inner sleeve and the inside of the outer sleeve.

Zur Befestigung der Buchsen an der Füllkammer gibt es unterschiedliche Möglichkeiten. Besondere Vorteile bietet die Verwendung eines Spannrings, der an der Stirnseite der Füllkammer aufgesetzt ist und damit die mindestens eine Buchse auf der Füllkammer hält. Der Spannring kann einen sich in Richtung auf die Füllkammer erweiternden, vorzugsweise konisch erweiternden Innendurchmesser aufweisen. Damit weist der Ring im vordersten Bereich der Füllkammer an deren Stirnseite seine größte Materialdicke auf. Dadurch ist gewährleistet, dass durch die starke Temperatur- und Druckbelastung gerade dieses Bereichs der Füllkammer keine Aufweitung und Ausfransung der Stirnseite der Füllkammer entsteht. Außerdem kann der Spannring mit mindestens einer radialen Öffnung zum Einleiten von Gießmaterial in die Spritzgießform versehen sein. Das Einarbeiten der radialen Öffnungen gestaltet sich im Vergleich zu einer Füllkammer ohne einen solchen Ring sehr viel einfacher, da auch hier nur der Ring und nicht die gesamte Füllkammer bearbeitet werden muss.There are various possibilities for fastening the bushes to the filling chamber. Special advantages are the use of a clamping ring, which is placed on the front side of the filling chamber and thus holds the at least one socket on the filling chamber. The clamping ring may have a widening in the direction of the filling chamber, preferably flared inner diameter. Thus, the ring in the front region of the filling chamber at its end face on its largest material thickness. This ensures that due to the strong temperature and pressure load just this area of the filling chamber no widening and fraying of the end face of the filling chamber is formed. In addition, the clamping ring may be provided with at least one radial opening for introducing casting material into the injection mold. The incorporation of the radial openings is much simpler compared to a filling chamber without such a ring, since here too only the ring and not the entire filling chamber has to be processed.

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen Füllkammer anhand der Zeichnung näher beschrieben.Hereinafter, a preferred embodiment of a filling chamber according to the invention will be described in more detail with reference to the drawing.

Es zeigen:

Fig. 1
einen Längsschnitt durch eine erfindungsgemäße Füllkammer;
Fig. 2
einen Querschnitt entlang der Linie II-II durch die Füllkammer aus Fig. 1;
Fig. 3
eine Teildraufsicht auf die Füllkammer aus Fig. 1;
Fig. 4
eine vergrößerte Detaildarstellung der Füllkammer aus Fig. 1;
Fig. 5
einen Teillängsschnitt durch eine zweite Ausführungsform einer erfindungsgemäßen Füllkammer.
Show it:
Fig. 1
a longitudinal section through a filling chamber according to the invention;
Fig. 2
a cross section along the line II-II through the filling chamber Fig. 1 ;
Fig. 3
a partial plan view of the filling chamber Fig. 1 ;
Fig. 4
an enlarged detail of the filling chamber Fig. 1 ;
Fig. 5
a partial longitudinal section through a second embodiment of a filling chamber according to the invention.

Die Füllkammer 10 aus Fig. 1 ist eine Füllkammer für eine Vakuum-Druckgießmaschine, bei der das flüssige Gießmaterial durch eine Zuführöffnung 11 auf der Unterseite der Füllkammer durch das in der Füllkammer herrschende Vakuum eingesaugt wird. Das Gießmaterial kommt dabei in der Regel direkt aus einem Schmelzofen. Aufgrund des herrschenden Unterdrucks wird das eingesaugte Material gegen die der Zuführöffnung 11 gegenüberliegende Seite 12 des Füllkammerinnenraums 13 geschleudert. Dadurch ist dieser Bereich 12 des Füllkammerinnenraums 13 starken thermischen Spannungen ausgesetzt. Um diese thermischen Spannungen auszugleichen, ist auf der Außenseite der Füllkammer auf der Höhe des Bereichs 12 eine Scheibe 14, die mit einem Kühlmittelkanal 15 durchzogen ist, als Kühleinrichtung angeordnet. Wie insbesondere Fig. 3 zeigt, ist der Führungskanal 15 in einen spiralförmigen Zuführungskanal 16 und einen spiralförmigen Rückführungskanal 17 unterteilt. Diese Art der Anordnung von Zuführungs- und Rückführungskanal führt zu einer sehr gleichmäßigen Temperaturverteilung über die gesamte Scheibenoberfläche. Anstelle eines Kühlmittels kann auch ein erwärmtes Medium durch die Kanäle 16, 17 geleitet werden, beispielsweise um die Füllkammer 10 vorzuwärmen.The filling chamber 10 from Fig. 1 is a filling chamber for a vacuum die casting machine, wherein the liquid casting material is sucked through a feed opening 11 on the underside of the filling chamber by the prevailing in the filling chamber vacuum. As a rule, the casting material comes directly from a melting furnace. Due to the prevailing negative pressure, the sucked material is thrown against the feed opening 11 opposite side 12 of the Füllkammerinnenraums 13. As a result, this region 12 of the filling chamber interior 13 is exposed to strong thermal stresses. To compensate for these thermal stresses, on the outside of the filling chamber at the height of the region 12, a disc 14, which is traversed by a coolant channel 15, arranged as a cooling device. In particular Fig. 3 shows, the guide channel 15 is divided into a spiral feed channel 16 and a spiral return channel 17. This type of arrangement of supply and return duct results in a very uniform temperature distribution over the entire disk surface. Instead of a coolant, a heated medium can be passed through the channels 16, 17, for example, to preheat the filling chamber 10.

Wie aus Fig. 2 zu sehen ist, ist die Scheibe 14 in sich gewölbt, d. h. der Wölbung der Füllkammer 10 angepasst. Außerdem ist aus Fig. 2 ersichtlich, dass sie in einem abgeflachten Bereich der Füllkammer 10 platziert ist.How out Fig. 2 can be seen, the disc 14 is curved in itself, ie the curvature of the filling chamber 10 adapted. Besides, it is off Fig. 2 it can be seen that it is placed in a flattened area of the filling chamber 10.

Die in Fig. 1 gezeigte Füllkammer 10 weist jedoch nicht nur in dem der Zuführöffnung 11 gegenüberliegenden Bereich 12 eine Kühleinrichtung auf, sondern auch in ihrem vorderen Bereich 18, in dem der Anschluss der Gießform erfolgt. Die in diesem Bereich 18 vorgesehene Kühleinrichtung 19 wird im dargestellten Beispiel durch drei ineinandergesteckte Buchsen 19.1, 19.2 und 19.3 gebildet. Die drei Buchsen 19.1, 19.2 und 19.3 schließen zwischen sich einen spiralförmigen Zuführungskanal 20 und einen spiralförmigen Rückführungskanal 21 für ein Kühlmittel ein. Der Zuführungskanal 20 ist mit einem Einlassanschluss 22 verbunden und der Rücklauf 21 mit einem Auslass 23. Die Buchsen 19.1, 19.2 und 19.3 werden von einem an der Stirnseite der Füllkammer 10 angesetzten Spannring 24 auf der Füllkammer 10 gehalten. Der Spannring 24 weist dabei einen sich konisch in Richtung Füllkammer erweiternden Innendurchmesser auf. Dadurch wird verhindert, dass der stirnseitige Rand der Füllkammer und auch des Spannrings 24 sich aufgrund der herrschenden hohen Drücke bei der Kolbenbewegung nach außen aufbiegen. In der Stirnseite des Spannrings 24 sind außerdem elastische Ringe 25, beispielsweise aus Gummi oder Kupfer eingesetzt, deren Querschnitt in Fig. 4 in vergrößerter Form dargestellt ist. Diese Ringe 25 dienen dem Toleranzausgleich zwischen Füllkammer 10 und einer hier nicht näher dargestellten Gießform. Die Füllkammer 10 und die Gießform werden so gefertigt, dass ein kleiner Spalt zwischen ihnen vorhanden ist, der durch den Ring 25 überbrückt wird. Sollte aufgrund der Fertigungstoleranzen kein Spalt zwischen Gießform und Füllkammer 10 vorhanden sein, so lässt sich der Ring 25 aufgrund seiner Form sowie der Form der sich leicht einwärts erweiternden Nut 26, in die er eingesetzt ist, komprimieren, sodass es nicht zu einem Stauchen der Stirnseite der Füllkammer 10 kommt. An der gegenüberliegenden Stirnseite weist die Füllkammer 10 einen Verlängerungsring 27 auf, der das Einführen des Druckgießkolbens in die Füllkammer 10 erleichtert und außerdem auch im vollkommen zurückgefahrenen Zustand des Druckgießkolbens die Dichtfläche zwischen Druckgießkolben und Innenwand der Füllkammer 10 vergrößert, sodass das im Innenraum 13 der Füllkammer 10 herrschende Vakuum zuverlässig aufrecht erhalten werden kann.In the Fig. 1 However, shown filling chamber 10 has not only in the feed opening 11 opposite region 12 a cooling device, but also in its front region 18, in which the connection of the mold takes place. The provided in this area 18 cooling device 19 is formed in the example shown by three nested bushes 19.1, 19.2 and 19.3. The three bushings 19.1, 19.2 and 19.3 enclose between them a helical feed passage 20 and a helical return passage 21 for a coolant. The feed channel 20 is connected to an inlet port 22 and the return 21 to an outlet 23. The bushings 19.1, 19.2 and 19.3 are held by a mounted on the front side of the filling chamber 10 clamping ring 24 on the filling chamber 10. The clamping ring 24 in this case has a conically widening in the direction of filling chamber inner diameter. This prevents that the end-side edge of the filling chamber and also the clamping ring 24 bend due to the prevailing high pressures in the piston movement to the outside. In the end face of the clamping ring 24 also elastic rings 25, for example made of rubber or copper are used, whose cross section in Fig. 4 is shown in enlarged form. These rings 25 are used to compensate for tolerances between the filling chamber 10 and a mold not shown here. The filling chamber 10 and the mold are made so that there is a small gap between them is, which is bridged by the ring 25. If, due to the manufacturing tolerances, there is no gap between the casting mold and the filling chamber 10, the ring 25 can be compressed due to its shape as well as the shape of the slightly inwardly widening groove 26, so that there is no upsetting of the end face the filling chamber 10 comes. At the opposite end, the filling chamber 10 has an extension ring 27, which facilitates the insertion of the die-casting in the filling chamber 10 and also in the fully retracted state of Druckgießkolbens the sealing surface between die casting piston and inner wall of the filling chamber 10 is increased, so that in the interior 13 of the filling chamber 10 prevailing vacuum can be reliably maintained.

In Fig. 5 ist ein der Fig. 1 entsprechender Teillängsschnitt durch eine zweite Füllkammer 10' einer Druckgießmaschine, bei der das heiße Gießmaterial ohne Vakuum durch eine obere Öffnung 11' in die Füllkammer 10' eingefüllt wird, gezeigt. Hier ist der thermisch am stärksten belastete Bereich wieder an der der Einfüllöffnung 11' gegenüberliegenden Stelle 12', jetzt aber auf der Unterseite der Füllkammer 10', angeordnet. Bei dieser Art von Füllkammer 10' ist auch die Kühleinrichtung 14' in Form einer ansonsten identisch oder ähnlich ausbildbaren Scheibe 14' an der Untereite der Füllkammer 10' ausgeführt.In Fig. 5 is one of the Fig. 1 corresponding partial longitudinal section through a second filling chamber 10 'of a die casting machine, in which the hot casting material is filled without vacuum through an upper opening 11' in the filling chamber 10 'shown. Here, the area which is subjected to the highest thermal stress is again arranged at the point 12 'opposite the filling opening 11', but now on the underside of the filling chamber 10 '. In this type of filling chamber 10 ', the cooling device 14' in the form of an otherwise identical or similar formable disc 14 'at the bottom of the filling chamber 10' is executed.

Claims (7)

  1. Filling chamber for a die-casting machine, which chamber has a feed opening (11, 11') for liquid casting material and in which a cooling device (14, 14') is provided in the filling chamber wall at least in the region (12, 12') lying opposite the feed opening (11, 11'),
    characterised
    - in that the cooling device (14, 14'), in the region lying opposite the feed opening (11, 11'), is formed by a circular disc (14, 14') which can be inserted into the filling chamber wall from outside and which is provided with at least one guide duct (15, 16, 17) for a cooling agent, and
    - in that, in the connection region (18) of the casting mould, a further cooling device (19) is formed by at least one bush (19.1, 19.2) which is placed on the outside of the filling chamber wall and which is provided with at least one guide duct (20, 21) for a cooling agent.
  2. Filling chamber according to claim 1, characterised in that the disc (14) has a spiral feed duct and a spiral return duct (16, 17) for the cooling agent which are provided with corresponding outer connections.
  3. Filling chamber according to claim 1 or 2, characterised in that the disc (14, 14') is in itself curved in accordance with the curvature of the filling chamber wall.
  4. Filling chamber according to any one of claims 1 to 3, characterised in that the further cooling device (19) is formed by three bushes (19.1, 19.2, 19.3) which are inserted one inside the other and which between them enclose a helical feed duct and a helical return duct (20,21) having corresponding outer connections (22, 23) .
  5. Filling chamber according to any one of claims 1 to 4, characterised in that the at least one bush (19.1,19.2) is held on the filling chamber (10) by a clamping ring (24) placed on the end of the filling chamber (10).
  6. Filling chamber according to claim 5, characterised in that the clamping ring (24) has an inside diameter which widens conically in the direction towards the filling chamber (10).
  7. Filling chamber according to claim 5 or 6, characterised in that the clamping ring (24) is provided with at least one radial opening for introducing casting material into the casting mould.
EP03002904A 2002-02-08 2003-02-10 Filling chamber for a diecasting machine Expired - Lifetime EP1338360B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10205246A DE10205246B4 (en) 2002-02-08 2002-02-08 Filling chamber for a die casting machine
DE10205246 2002-02-08

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EP1338360A2 EP1338360A2 (en) 2003-08-27
EP1338360A3 EP1338360A3 (en) 2003-11-12
EP1338360B1 true EP1338360B1 (en) 2008-04-02

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AT (1) ATE390972T1 (en)
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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH704444A2 (en) * 2011-02-01 2012-08-15 Frederic Muller A one-piece casting chamber of a die casting machine having a cooling means for temperature compensation.
CN103658585A (en) * 2012-09-25 2014-03-26 上海胜僖汽车配件有限公司 Feeding tube for die-casting machine
DE102014009565B4 (en) 2014-06-27 2020-05-20 Wieland-Werke Ag Filling chamber for a die casting machine
DE102015016756A1 (en) 2015-12-23 2017-06-29 Wieland-Werke Ag Filling chamber for a die casting machine
DE102016111663A1 (en) * 2016-06-24 2017-12-28 Ortmann Druckgießtechnik GmbH Gießkammern-Gießbehälter-Druckgießwerkzeuge-Formenbau Horizontal casting chamber, pouring chamber and filling aid kit and method for die casting metal in a casting chamber
CN107020363A (en) * 2017-05-05 2017-08-08 广东鸿图武汉压铸有限公司 A kind of monoblock type pouring bushing for die casting die
DE102017011321B3 (en) * 2017-12-08 2019-05-16 Wieland-Werke Ag Filling chamber for a die casting machine
ES2763861B2 (en) * 2018-11-29 2022-05-10 Alrotec Tecnology S L U INJECTION SYSTEM
DE102019112586A1 (en) 2019-05-14 2020-11-19 Weldstone Components GmbH Modified filling chamber for a die casting machine
CN111085673A (en) * 2019-12-29 2020-05-01 盐城泰欧昌机械有限公司 Die-casting machine melts cup with water-cooling mechanism
CN111730039B (en) * 2020-07-22 2022-05-13 莆田市荣兴机械有限公司 Universal and efficient melting cup temperature regulating and controlling device and regulating and controlling method thereof

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516480A (en) * 1968-06-17 1970-06-23 Hamilton Die Cast Inc Shot tube for a die casting type machine
FR2317035A1 (en) * 1975-07-07 1977-02-04 Activite Atom Avance CASTING PLANT POWER SUPPLY
CA1196466A (en) * 1984-02-29 1985-11-12 Guido Perrella Nozzle assembly for die casting machine
JPS6167556A (en) * 1984-09-12 1986-04-07 Nichiei Kozai Kk Injection sleeve for die casting
JPS61144256A (en) * 1984-12-18 1986-07-01 Ube Ind Ltd Molten metal casting method in die casting machine
DE4229273A1 (en) * 1992-09-02 1994-03-03 Hugo Kunz Filler chamber unit, for a die casting machine - with its end provided with a ring made of hard material
AT401029B (en) * 1993-05-03 1996-05-28 Vaillant Gmbh DIE CASTING MACHINE
DE4421598A1 (en) * 1994-06-21 1996-01-04 Hugo Kunz Filling chamber for pressure diecasting machine
DE19544716A1 (en) * 1995-11-30 1997-06-05 Gerhard Dr Ing Betz Method for temperature control in die-casting machine with a filling chamber
CA2228458C (en) * 1998-02-02 2008-08-05 Mold-Masters Limited Injection molding cooled gate insert
DE19856971A1 (en) * 1998-12-10 2000-06-15 Buehler Druckguss Ag Uzwil Casting chamber, for a pressure die casting machine, has a replaceable protective material, especially a slit liner sleeve, on its inner wall region near a filling opening
DE19908392C2 (en) * 1999-02-26 2001-06-07 Ortmann Druckgiestechnik Gmbh Casting chamber, in particular for the die casting of metals
DE59910520D1 (en) * 1999-06-04 2004-10-21 Andre Mueller Casting chamber for a die casting machine
US6378597B1 (en) * 2000-09-15 2002-04-30 Investors Holding Group Shot sleeve assembly

Also Published As

Publication number Publication date
EP1338360A2 (en) 2003-08-27
EP1338360A3 (en) 2003-11-12
DE10205246A1 (en) 2003-08-28
ATE390972T1 (en) 2008-04-15
DE10205246B4 (en) 2004-04-15
DE50309512D1 (en) 2008-05-15

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