EP1338360A2 - Filling chamber for a diecasting machine - Google Patents

Filling chamber for a diecasting machine Download PDF

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Publication number
EP1338360A2
EP1338360A2 EP03002904A EP03002904A EP1338360A2 EP 1338360 A2 EP1338360 A2 EP 1338360A2 EP 03002904 A EP03002904 A EP 03002904A EP 03002904 A EP03002904 A EP 03002904A EP 1338360 A2 EP1338360 A2 EP 1338360A2
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EP
European Patent Office
Prior art keywords
filling chamber
cooling device
chamber according
filling
coolant
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
EP03002904A
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German (de)
French (fr)
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EP1338360A3 (en
EP1338360B1 (en
Inventor
Hugo J. Kunz
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Wieland Werke AG
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Wieland Werke AG
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Publication date
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Publication of EP1338360A2 publication Critical patent/EP1338360A2/en
Publication of EP1338360A3 publication Critical patent/EP1338360A3/en
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Classifications

    • 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 in the filling chamber wall at least in that of the feed opening opposite area provided a cooling device is.
  • the inside surface of a filling chamber of a die casting machine that serves as a sliding surface for the die casting piston must absolutely be smooth so as not to cause the movement of the die-casting piston hinder. Also an expansion of the inside diameter of the Filling chamber is intolerable because of a gap between hot casting material with the piston and the inner wall of the filling chamber the forward movement of the die-casting piston on the piston side Spray out the filling chamber and injuries to the operating personnel can lead. When filling the hot casting material through the feed opening this meets the opposite one Side of the filling chamber inner surface. Because of the great heat the filling chamber expands at this point. The filling chamber deforms and there are washouts in the pouring area by alloying aluminum and steel.
  • filling chambers are therefore at least in the Provide cooling devices in the area of the feed opening.
  • Drilled holes are made in the axial direction from the front side, which are connected by cross holes and thus form a guide channel for a coolant.
  • the type of cooling device is very complex and expensive manufacturing, since the entire filling chamber is processed must do what only with special clamping devices and special machines is possible.
  • the filling chamber is cooled directly, so it is in the hole areas due to the thermal Tensions for crack formation and the escape of cooling medium can come.
  • the present invention has for its object a Filling chamber with a structurally simple and effective cooling device to accomplish.
  • the task is done with a filling chamber of the type mentioned Solved type, which is characterized according to the invention, that the cooling device in the opposite of the feed opening Area of a usable in the filling chamber wall Washer with at least one guide channel for a coolant is provided, is formed.
  • the disc is a relative to the entire filling chamber small component and can therefore easily on a machine tool processed to produce the coolant channel or channels become. Then the disc is from the outside in the Filling chamber wall inserted into a recess provided for this purpose and screwed to the filling chamber.
  • the disc can preferably be a spiral feed and Return channel for the coolant, with corresponding outer Connections are provided.
  • the spiral Guiding of the feed and return channels comes about entire surface of the disc to a very even and indirect cooling.
  • the disc can also be in be curved in accordance with the curvature of the filling chamber wall, so that this also ensures uniform cooling of the impact area of the hot casting material in the filling chamber.
  • heating can of course also be done or preheating the filling chamber, by a correspondingly heated through the guide channel Medium is passed through.
  • the filling chamber can have a cooling device in the filling area of the hot casting material also in the connection area of the Casting mold have a cooling device. It also happens there too strong due to the piston pressure and the hot casting material thermal stresses reduced by the cooling device become. The cooling can also cause a burst avoid the sprue when opening the mold.
  • the cooling device can preferably be located in the region of the Injection mold from at least one outside onto the filling chamber wall attached and with at least one guide channel for a coolant-provided socket can be formed.
  • the guide channel is incorporated in the at least one socket that is in the Compared to the entire filling chamber, again relatively small components represent that machined more easily in a machine tool can be considered the entire filling chamber.
  • the cooling acts indirectly on the filling chamber, so that there are no cracks.
  • the cooling device of two nested connectors that are between them a spiral feed and return channel with corresponding Include external connections, formed.
  • the feeder Return channel is made easy by appropriate surface treatment the outside of the inner socket as well as the Made inside the outer socket.
  • the use offers particular advantages a clamping ring on the front of the filling chamber is attached and thus the at least one socket on the Filling chamber holds.
  • the clamping ring can move towards you expanding the filling chamber, preferably expanding conically Have inner diameter. So the ring points in the forefront Area of the filling chamber on the front side of its greatest material thickness on. This ensures that the severe temperature and pressure loads in this area the filling chamber no widening and fraying of the front the filling chamber is created.
  • the clamping ring with at least a radial opening for the introduction of casting material be provided in the injection mold. Incorporation of the radial Openings are designed in comparison to a filling chamber much easier without such a ring, as well here only the ring and not the entire filling chamber is machined must become.
  • the filling chamber 10 from FIG. 1 is a filling chamber for a Vacuum die casting machine using the liquid casting material through a feed opening 11 on the underside of the filling chamber sucked in by the vacuum in the filling chamber becomes.
  • the casting material usually comes out directly a melting furnace. Because of the prevailing negative pressure the sucked material against that opposite the feed opening 11 Page 12 of the filling chamber interior 13 hurled. This makes this area 12 of the filling chamber interior 13 exposed to strong thermal stresses.
  • Around Equalizing thermal tensions is on the outside a disc 14 in the filling chamber at the level of area 12, which is crossed with a coolant channel 15 as a cooling device arranged. 3 shows in particular, the Guide channel 15 into a spiral feed channel 16 and a spiral return duct 17. This type of arrangement of feed and return channels leads to a very even temperature distribution the entire disc surface. Instead of a coolant a heated medium can also be passed through the channels 16, 17 are, for example, to preheat the filling chamber 10.
  • the disc 14 is curved in itself, d. H. adapted to the curvature of the filling chamber 10. Moreover 2 that it is in a flattened area the filling chamber 10 is placed.
  • the filling chamber 10 shown in FIG. 1 is not only in FIG the area 12 opposite the feed opening 11 Cooling device on, but also in its front area 18, in which the mold is connected.
  • cooling device 19 is shown in the Example with three nested sockets 19.1, 19.2 and 19.3.
  • the three sockets 19.1, 19.2 and 19.3 close a spiral feed channel between them 20 and a spiral return duct 21 for a coolant.
  • the feed channel 20 is with a Inlet port 22 connected and the return 21 with a Outlet 23.
  • Sockets 19.1, 19.2 and 19.3 are one clamping ring 24 attached to the end face of the filling chamber 10 held on the filling chamber 10.
  • the clamping ring 24 has an inner diameter that widens conically towards the filling chamber on.
  • the ring 25 can be due its shape as well as the shape of the slightly inward compress the widening groove 26 in which it is inserted, so that there is no compression of the end face of the filling chamber 10 is coming.
  • the Filling chamber 10 on an extension ring 27, the insertion of the die-casting piston in the filling chamber 10 facilitates and also in the fully retracted state of the Die casting piston the sealing surface between die casting piston and Inner wall of the filling chamber 10 enlarged, so that in the interior 13 of the filling chamber 10 prevailing vacuum reliably upright can be obtained.
  • FIG. 5 is a partial longitudinal section corresponding to FIG. 1 through a second filling chamber 10 'of a die casting machine, at the hot casting material without vacuum through an upper opening 11 'is filled into the filling chamber 10' shown.
  • the most thermally stressed area is again on the the filling opening 11 'opposite point 12', now but arranged on the underside of the filling chamber 10 '.
  • the cooling device 14' in the form of an otherwise identical or similar trainable Disc 14 'carried out on the underside of the filling chamber 10'.

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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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Casting Or Compression 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 in the filling chamber wall at least in that of the feed opening opposite area provided a cooling device is.

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 inside surface of a filling chamber of a die casting machine that serves as a sliding surface for the die casting piston must absolutely be smooth so as not to cause the movement of the die-casting piston hinder. Also an expansion of the inside diameter of the Filling chamber is intolerable because of a gap between hot casting material with the piston and the inner wall of the filling chamber the forward movement of the die-casting piston on the piston side Spray out the filling chamber and injuries to the operating personnel can lead. When filling the hot casting material through the feed opening this meets the opposite one Side of the filling chamber inner surface. Because of the great heat the filling chamber expands at this point. The filling chamber deforms and there are washouts in the pouring area by alloying aluminum and steel. To these effects To counteract, filling chambers are therefore at least in the Provide cooling devices in the area of the feed opening. at the known filling chambers are in the filling chamber wall Drilled holes are made in the axial direction from the front side, which are connected by cross holes and thus form a guide channel for a coolant. This However, the type of cooling device is very complex and expensive manufacturing, since the entire filling chamber is processed must do what only with special clamping devices and special machines is possible. In addition, the filling chamber is cooled directly, so it is in the hole areas due to the thermal Tensions for crack formation and the escape of cooling medium can come.

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 a Filling chamber with a structurally simple and effective cooling device to accomplish.

Die Aufgabe wird mit einer Füllkammer der eingangs genannten Art gelöst, die erfindungsgemäß dadurch gekennzeichnet ist, dass die Kühleinrichtung in dem der Zuführöffnung gegenüberliegenden Bereich von einer in die Füllkammerwand einsetzbaren Scheibe, die mit mindestens einem Führungskanal für ein Kühlmittel versehen ist, gebildet ist.The task is done with a filling chamber of the type mentioned Solved type, which is characterized according to the invention, that the cooling device in the opposite of the feed opening Area of a usable in the filling chamber wall Washer with at least one guide channel for a coolant is provided, is formed.

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 relative to the entire filling chamber small component and can therefore easily on a machine tool processed to produce the coolant channel or channels become. Then the disc is from the outside in the Filling chamber wall inserted into a recess provided for this purpose and screwed to the filling chamber. By arranging the Disc opposite the hot molding material supply opening the cooling device unfolds its effect on the Where the greatest thermal stresses are caused by the Strike 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 can preferably be a spiral feed and Return channel for the coolant, with corresponding outer Connections are provided. By the spiral Guiding of the feed and return channels comes about entire surface of the disc to a very even and indirect cooling. Preferably, the disc can also be in be curved in accordance with the curvature of the filling chamber wall, so that this also ensures uniform cooling of the impact area 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 can of course also be done or preheating the filling chamber, by a correspondingly heated through the guide channel Medium is passed through.

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.The filling chamber can have a cooling device in the filling area of the hot casting material also in the connection area of the Casting mold have a cooling device. It also happens there too strong due to the piston pressure and the hot casting material thermal stresses reduced by the cooling device become. The cooling can also cause a burst avoid the sprue when opening the mold.

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.The cooling device can preferably be located in the region of the Injection mold from at least one outside onto the filling chamber wall attached and with at least one guide channel for a coolant-provided socket can be formed. The guide channel is incorporated in the at least one socket that is in the Compared to the entire filling chamber, again relatively small components represent that machined more easily in a machine tool can be considered the entire filling chamber. Moreover Here, too, the cooling acts indirectly on the filling chamber, so that there are no cracks.

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 Zuführund 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 of two nested connectors that are between them a spiral feed and return channel with corresponding Include external connections, formed. The feeder Return channel is made easy by appropriate surface treatment the outside of the inner socket as well as the Made inside the outer socket.

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 different ways of attaching the bushings to the filling chamber Possibilities. The use offers particular advantages a clamping ring on the front of the filling chamber is attached and thus the at least one socket on the Filling chamber holds. The clamping ring can move towards you expanding the filling chamber, preferably expanding conically Have inner diameter. So the ring points in the forefront Area of the filling chamber on the front side of its greatest material thickness on. This ensures that the severe temperature and pressure loads in this area the filling chamber no widening and fraying of the front the filling chamber is created. In addition, the clamping ring with at least a radial opening for the introduction of casting material be provided in the injection mold. Incorporation of the radial Openings are designed in comparison to a filling chamber much easier without such a ring, as well here only the ring and not the entire filling chamber is machined must become.

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen Füllkammer anhand der Zeichnung näher beschrieben. Below is a preferred embodiment of one Filling chamber according to the invention 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 of Fig. 1;
Fig. 3
a partial plan view of the filling chamber of Fig. 1;
Fig. 4
an enlarged detail view of the filling chamber of 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 using the liquid casting material through a feed opening 11 on the underside of the filling chamber sucked in by the vacuum in the filling chamber becomes. The casting material usually comes out directly a melting furnace. Because of the prevailing negative pressure the sucked material against that opposite the feed opening 11 Page 12 of the filling chamber interior 13 hurled. This makes this area 12 of the filling chamber interior 13 exposed to strong thermal stresses. Around Equalizing thermal tensions is on the outside a disc 14 in the filling chamber at the level of area 12, which is crossed with a coolant channel 15 as a cooling device arranged. 3 shows in particular, the Guide channel 15 into a spiral feed channel 16 and a spiral return duct 17. This type of arrangement of feed and return channels leads to a very even temperature distribution the entire disc surface. Instead of a coolant a heated medium can also be passed through the channels 16, 17 are, 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.As can be seen from Fig. 2, the disc 14 is curved in itself, d. H. adapted to the curvature of the filling chamber 10. Moreover 2 that it is in a flattened area the filling chamber 10 is placed.

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.However, the filling chamber 10 shown in FIG. 1 is not only in FIG the area 12 opposite the feed opening 11 Cooling device on, but also in its front area 18, in which the mold is connected. In the This area 18 provided cooling device 19 is shown in the Example with three nested sockets 19.1, 19.2 and 19.3. The three sockets 19.1, 19.2 and 19.3 close a spiral feed channel between them 20 and a spiral return duct 21 for a coolant. The feed channel 20 is with a Inlet port 22 connected and the return 21 with a Outlet 23. Sockets 19.1, 19.2 and 19.3 are one clamping ring 24 attached to the end face of the filling chamber 10 held on the filling chamber 10. The clamping ring 24 has an inner diameter that widens conically towards the filling chamber on. This prevents the front Edge of the filling chamber and also the clamping ring 24 due to the prevailing high pressures during piston movement bend outwards. In the face of the clamping ring 24 are also elastic rings 25, for example made of rubber or Copper used, the cross section of which is enlarged in FIG. 4 Shape is shown. These rings 25 are used for tolerance compensation between filling chamber 10 and one not shown here Mold. The filling chamber 10 and the mold are made so that there is a small gap between them which is bridged by the ring 25. Should be due the manufacturing tolerances no gap between the mold and Filling chamber 10 are present, so the ring 25 can be due its shape as well as the shape of the slightly inward compress the widening groove 26 in which it is inserted, so that there is no compression of the end face of the filling chamber 10 is coming. On the opposite end, the Filling chamber 10 on an extension ring 27, the insertion of the die-casting piston in the filling chamber 10 facilitates and also in the fully retracted state of the Die casting piston the sealing surface between die casting piston and Inner wall of the filling chamber 10 enlarged, so that in the interior 13 of the filling chamber 10 prevailing vacuum reliably upright can be obtained.

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.5 is a partial longitudinal section corresponding to FIG. 1 through a second filling chamber 10 'of a die casting machine, at the hot casting material without vacuum through an upper opening 11 'is filled into the filling chamber 10' shown. Here the most thermally stressed area is again on the the filling opening 11 'opposite point 12', now but arranged on the underside of the filling chamber 10 '. at this type of filling chamber 10 'is also the cooling device 14' in the form of an otherwise identical or similar trainable Disc 14 'carried out on the underside of the filling chamber 10'.

Claims (9)

Füllkammer für eine Druckgießmaschine mit einer Zuführöffnung (11, 11') für flüssiges Gießmaterial, bei der in der Füllkammerwand mindestens in dem der Zuführöffnung (11, 11') gegenüberliegenden Bereich (12, 12') eine Kühleinrichtung (14, 14') vorgesehen ist, dadurch gekennzeichnet, dass die Kühleinrichtung (14, 14') in dem der Zuführöffnung (11, 11') gegenüberliegenden Bereich von einer in die Füllkammerwand einsetzbaren Scheibe (14, 14'), die mit mindestens einem Führungskanal (15, 16, 17) für ein Kühlmittel versehen ist, gebildet ist.Filling chamber for a die casting machine with a feed opening (11, 11 ') for liquid casting material, in which a cooling device (14, 14') is provided in the filling chamber wall at least in the area (12, 12 ') opposite the feed opening (11, 11') characterized in that the cooling device (14, 14 ') in the area opposite the feed opening (11, 11') has a disc (14, 14 ') which can be inserted into the filling chamber wall and which is provided with at least one guide channel (15, 16, 17) is provided for a coolant. Füllkammer nach Anspruch 1, dadurch gekennzeichnet, dass die Scheibe (14) einen spiralförmigen Zuführ- und Rücklaufkanal (16, 17) für das Kühlmittel, die mit entsprechenden äußeren Anschlüssen versehen sind, aufweist.Filling chamber according to claim 1, characterized in that the disc (14) has a spiral feed and return channel (16, 17) for the coolant, which are provided with corresponding outer connections. Füllkammer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Scheibe (14, 14') in sich entsprechend der Wölbung der Füllkammerwand gewölbt ist.Filling chamber according to claim 1 or 2, characterized in that the disc (14, 14 ') is curved in accordance with the curvature of the filling chamber wall. Füllkammer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass sie im Anschlussbereich (18) der Gießform mit einer weiteren Kühleinrichtung (19) versehen ist. Filling chamber according to one of claims 1 to 3, characterized in that it is provided with a further cooling device (19) in the connection region (18) of the casting mold. Füllkammer nach Anspruch 4, dadurch gekennzeichnet, dass die Kühleinrichtung (19) im Bereich (18) der Gießform von mindestens einer außen auf die Füllkammerwand aufgesetzten und mit mindestens einem Führungskanal (20, 21) für ein Kühlmittel versehenen Buchse (19.1, 19.2) gebildet ist.Filling chamber according to claim 4, characterized in that the cooling device (19) in the region (18) of the casting mold is formed by at least one bushing (19.1, 19.2) placed on the outside of the filling chamber wall and provided with at least one guide channel (20, 21) for a coolant is. Füllkammer nach Anspruch 5, dadurch gekennzeichnet, dass die Kühleinrichtung (19) von drei ineinander gesteckten Buchsen (19.1, 19.2, 19.3), die zwischen sich einen spiralförmigen Zuführ- und Rücklaufkanal (20, 21) mit entsprechenden Außenanschlüssen (22, 23) einschließen, gebildet ist.Filling chamber according to claim 5, characterized in that the cooling device (19) of three nested bushings (19.1, 19.2, 19.3), which include a spiral feed and return channel (20, 21) with corresponding external connections (22, 23) , is formed. Füllkammer nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die mindestens eine Buchse (19.1, 19.2) von einem an der Stirnseite der Füllkammer (10) aufgesetzten Spannring (24) auf der Füllkammer (10) gehalten ist.Filling chamber according to claim 5 or 6, characterized in that the at least one bushing (19.1, 19.2) is held on the filling chamber (10) by a clamping ring (24) placed on the end face of the filling chamber (10). Füllkammer nach Anspruch 7, dadurch gekennzeichnet, dass der Spannring (24) einen sich in Richtung auf die Füllkammer (10) konisch erweiternden Innendurchmesser aufweist.Filling chamber according to claim 7, characterized in that the clamping ring (24) has an inner diameter which widens conically in the direction of the filling chamber (10). Füllkammer nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass der Spannring (24) mit mindestens einer radialen Öffnung zum Einleiten von Gießmaterial in die Gießform versehen ist.Filling chamber according to claim 7 or 8, characterized in that the clamping ring (24) is provided with at least one radial opening for introducing casting material into the casting mold.
EP03002904A 2002-02-08 2003-02-10 Filling chamber for a diecasting machine Expired - Lifetime EP1338360B1 (en)

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WO2012103661A1 (en) * 2011-02-01 2012-08-09 Muller Frederic Cooling device for a die casting machine
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
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
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
WO2020109645A1 (en) * 2018-11-29 2020-06-04 Alrotec Tecnology, S.L.U. Injection chamber or container
CN111730039A (en) * 2020-07-22 2020-10-02 吴奕鑫 Universal and efficient melting cup temperature regulating and controlling device and regulating and controlling method thereof

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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
DE102017011321B3 (en) * 2017-12-08 2019-05-16 Wieland-Werke Ag Filling chamber for a die casting machine
DE102019112586A1 (en) 2019-05-14 2020-11-19 Weldstone Components GmbH Modified filling chamber for a die casting machine

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Publication number Priority date Publication date Assignee Title
WO2012103661A1 (en) * 2011-02-01 2012-08-09 Muller Frederic Cooling device for a die casting machine
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
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
WO2020109645A1 (en) * 2018-11-29 2020-06-04 Alrotec Tecnology, S.L.U. Injection chamber or container
US11684971B2 (en) 2018-11-29 2023-06-27 Alrotec Technology, S.L.U. Injection chamber or container
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
CN111730039A (en) * 2020-07-22 2020-10-02 吴奕鑫 Universal and efficient melting cup temperature regulating and controlling device and regulating and controlling method thereof

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EP1338360A3 (en) 2003-11-12
DE10205246A1 (en) 2003-08-28
EP1338360B1 (en) 2008-04-02
DE50309512D1 (en) 2008-05-15
ATE390972T1 (en) 2008-04-15

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