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EP0011696B1 - Device for supplying a continuously rotating casting table - Google Patents

Device for supplying a continuously rotating casting table Download PDF

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Publication number
EP0011696B1
EP0011696B1 EP19790103813 EP79103813A EP0011696B1 EP 0011696 B1 EP0011696 B1 EP 0011696B1 EP 19790103813 EP19790103813 EP 19790103813 EP 79103813 A EP79103813 A EP 79103813A EP 0011696 B1 EP0011696 B1 EP 0011696B1
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EP
European Patent Office
Prior art keywords
casting
gutter
metal
pouring
vessels
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.)
Expired
Application number
EP19790103813
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German (de)
French (fr)
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EP0011696B2 (en
EP0011696A1 (en
Inventor
Günter Phillips Obering
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Russ-Elektroofen Produktions- & Co KG GmbH
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Russ-Elektroofen Produktions- & Co KG GmbH
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Application filed by Russ-Elektroofen Produktions- & Co KG GmbH filed Critical Russ-Elektroofen Produktions- & Co KG GmbH
Publication of EP0011696A1 publication Critical patent/EP0011696A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D39/00Equipment for supplying molten metal in rations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D35/00Equipment for conveying molten metal into beds or moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D5/00Machines or plants for pig or like casting
    • B22D5/02Machines or plants for pig or like casting with rotary casting tables

Definitions

  • the invention relates to a device for the precisely metered feeding of continuously rotating casting carousels with built-up molds, preferably for light metal casting.
  • a device for feeding fixed molds for casting large blocks (DE-A 2 406 896) with a fixed channel which can be fed by a pump and which leads to a rotatable, heatable pouring ladle which can be rotated and pivoted about a vertical axis with an articulated one the discharge end of which can be raised and lowered is provided for filling the fixed molds.
  • This device is only suitable for the intended purpose, i.e.
  • This device can give even less than the first suggestions for the precisely metered casting of high-quality small castings made of aluminum, because they do not deal with the filling of casting molds, but only with the distribution of large quantities of liquid metal on larger casting vessels, such as those used for steel are dealt with, whereby the associated weighing system does not permit the metering of very small quantities of metal.
  • these devices are alien to the subject matter of the invention because they are neither provided for the feeding and metering of a continuously rotating casting carousel with built-up molds, nor can they be converted in an obvious manner for this purpose.
  • Casting carousels with built-up molds as well as die casting machines are, as practice shows, still fed today via a ladle system.
  • a ladle that can be moved by a distance of approx. 3 to 4 meters between the die casting machine or the casting carousel and the stationary holding furnace is used.
  • the spoon moves to the furnace and dips vertically into the bath of molten metal, the immersion depth being scanned using contact rods. After the spoon is full, the spoon is raised and the excess metal in the spoon flows back into the metal bath.
  • the filled spoon is then moved to the pouring point and poured into the filling funnel or the metal feed channel with a length of 400 to 500 mm.
  • the invention has for its object not only to avoid the disadvantages of the known method described above, but also to significantly shorten the casting cycle and to increase the amount of metal per casting practically as desired and also to enable the possibility of fully automatic control of the entire casting process.
  • This object is achieved by the invention with at least one tiltable pouring vessel, a pouring channel connected downstream thereof, which is horizontally and vertically pivotable and horizontally displaceable, and devices for temporarily connecting the pouring channel near its outlet to the continuously rotating pouring carousel carrying the molds.
  • two tiltable pouring vessels are used, which alternately feed a metal distribution channel which opens into the pouring channel.
  • Automatic devices for mechanical cleaning of the metal outlet nozzle can also be provided after each or after a certain number of castings, or the metal outlet nozzle can be closed by means of a motor-operated plug, for example because of malfunctions in the hydraulics, the pouring channel cannot be raised.
  • 1 and 2 denote two pouring vessels, which are pivoted by means of hydraulic devices in tilting chairs 3 and 4 and alternately feed a metal distribution channel 5, the outlet of which opens into a pouring channel 6.
  • the casting trough 6 is provided with a metal outlet nozzle 9, which is located in the casting position exactly above the opening 10 of the mold 11.
  • the pouring channel 6 is mounted in a pivot bearing 15 so as to be pivotable about a vertical axis and also horizontally displaceable on a guide 16 in the direction of arrows D and E.
  • a temporary connection is provided between the two parts, and for this purpose a centering pin 18, which can be displaced by means of a hydraulic cylinder 17, is used, which into an opening of a coupling piece 19 on the underside of the trough 6 in the vicinity of their outlet can intervene.
  • the exchangeable metal outlet nozzle 9 can be closed by means of a plug 21 which can be actuated by a motor 20, for example in the event of a malfunction in the hydraulic system which prevents the channel from lifting at the end of the pouring cycle. If necessary, the nozzle cross-section can also be changed by means of the plug 21, provided that the entire nozzle is not to be replaced.
  • an automatic cleaning device (not shown), e.g. B. in the form of a pneumatically actuated metal brush, which automatically cleans the metal outlet nozzle 9 of residues between the individual pouring cycles, that is to say with the pouring channel 6 raised, and thus ensures a constant passage cross section.
  • the gutter can be detached, e.g. foldable channel cover 22, 23, not shown in FIG. 1, can be closed over most of its length, heating devices 24 and 25 being able to be provided in this channel cover to ensure a uniform casting temperature.
  • the pouring channel 6 is pivoted in the raised state by means of a hydraulic device (not shown) into the position corresponding to the beginning of the pouring 13. If the mold 11 built on the casting carousel 12 reaches this position, the casting trough is automatically lowered, so that the metal outlet nozzle 9 is above the opening 10 of the mold 11.
  • the channel 6 is coupled to the casting carousel 12, the metal flowing into the mold opening immediately after the channel has been lowered.
  • a narrowing of the cross section built into the trough for example in the form of a separating plate 26 with a small opening 27, enables a particularly smooth metal flow to be achieved during casting and at the same time residues of slag to be retained.
  • the filling process is monitored by built-in contact bars (not shown) in connection with the riser openings in the molds.
  • the metal flow rate is optionally via a Flow control group of the hydraulics regulated by changing the tilting speed of the casting vessel, the trough inclination and possibly also by adjusting the flow cross-section of the metal outlet nozzle 9 by means of the plug 21.
  • the casting is controlled by means of a predetermined casting time, whereby the smooth metal flow and the constant passage cross-section guaranteed with automatic cleaning of the metal outlet nozzle ensure a precisely metered amount of metal per casting.
  • the channel 6 can follow the continuous movement of the mold 11 without the continuous metal flow being impaired during the casting process.
  • the channel 6 is automatically tilted up by means of the hydraulic cylinder 8 and, if appropriate, the casting process is also ended by closing the metal outlet nozzle 9 by means of the stopper 21.
  • the centering pin 18 is retracted by means of the hydraulic cylinder 17, thus releasing the connection between the channel and the casting carousel.
  • the channel is then pivoted back into position 13 and is immediately ready for a new casting process.
  • an operating time per pouring vessel of 30 minutes. B. 30 seconds each and the pouring time can be 10-12 seconds and there is a sufficient period of approx. 25 minutes for refilling the pouring vessel not in use.
  • the heating devices 24 and 25 are also controlled automatically by appropriate temperature sensors.
  • the device according to the invention With the aid of a relatively simple control, it is possible by means of the device according to the invention, even with a continuously rotating casting carousel, for the entire casting operation, i.e. the alternate loading of the pouring channel through the two pouring vessels, the lowering or raising of the channel, its coupling with the casting carousel, the Metering of the amount of metal, the regulation of the temperature of the melt in the channel, the completion of the casting process, the uncoupling of the channel and its pivoting back to the starting position, to be carried out fully automatically.
  • the possibility of closing the metal outlet nozzle 9 and ensuring that this nozzle is positioned precisely over the pouring opening of the mold reliably prevents overflow and dripping even in the event of a malfunction.
  • the casting process can be interrupted at any time, without disruptions and complications when restarting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)

Description

Die Erfindung betrifft eine Vorrichtung für die genau dosierte Speisung von kontinuierlich umlaufenden Giesskarussellen mit aufgebauten Kokillen, vorzugsweise für Leichtmetallguss.The invention relates to a device for the precisely metered feeding of continuously rotating casting carousels with built-up molds, preferably for light metal casting.

Bekannt ist eine Vorrichtung zur Speisung von feststehenden Giessformen zum Giessen grosser Blöcke (DE-A 2 406 896) mit einer feststehenden über eine Pumpe beschickbaren Rinne, die zu einer drehbar gelagerten heizbaren Giesspfanne führt, die mit einer angelenkten um eine senkrechte Achse drehbaren und an ihrem Abgabeende heb- und senkbaren Giessrinne zum Füllen der feststehenden Kokillen versehen ist. Diese Vorrichtung ist nur für den vorgesehenen Zweck, also für das Giessen von Blöcken mit grossem Gewicht geeignet und kann nicht für den genau dosierten Guss kleiner Metallmengen verwendet werden, insbesondere nicht für den Aluminium-Kokillen-Guss unter Berücksichtigung absolut genauer Abgussmengen, weil aufgrund der sehr langen Metallzulaufrinne sowie der Länge der Giessrinne eine erhebliche Oxidationsbildung eintritt, die beim Giessen von hochwertigen Aluminium-Gussteilen unbedingt vermieden werden muss.Known is a device for feeding fixed molds for casting large blocks (DE-A 2 406 896) with a fixed channel which can be fed by a pump and which leads to a rotatable, heatable pouring ladle which can be rotated and pivoted about a vertical axis with an articulated one the discharge end of which can be raised and lowered is provided for filling the fixed molds. This device is only suitable for the intended purpose, i.e. for the casting of blocks with a large weight and cannot be used for the precisely metered casting of small quantities of metal, in particular not for the aluminum chill casting, taking absolutely precise casting quantities into account, because of the very long metal inlet trough and the length of the trough, considerable oxidation formation occurs, which must be avoided when casting high-quality aluminum castings.

Bekannt ist ferner eine Vorrichtung zur Verteilung von flüssigem Metall, insbesondere in Sauerstoff-Aufblas-Konvertern hergestelltem Stahl auf mehrere, vorzugsweise zwei Gefässe oder Pfannen (DE-A 2101 244) mit einer Rinne, die in Abflussrichtung in mehrere Arme sich verzweigend gestaltet, leicht geneigt angeordnet und quer dazu kippbar gelagert ist. Diese Vorrichtung kann noch weniger als die erstgenannte Anregungen für den genau dosierten Guss hochwertiger kleiner Gussstücke aus Aluminium geben, weil sie sich gar nicht mit dem Füllen von Gussformen, sondern nur mit der Verteilung grosser flüssiger Metallmengen auf .grössere Giessgefässe, wie diese für Stahl eingesetzt werden, befasst, wobei das zugehörige Wiegesystem die Dosierung kleinster Metallmengen nicht zulässt.Also known is a device for distributing liquid metal, in particular steel made in oxygen-inflation converters, to several, preferably two vessels or pans (DE-A 2101 244) with a channel which is designed to branch out into several arms in the outflow direction arranged inclined and tilted transversely to it. This device can give even less than the first suggestions for the precisely metered casting of high-quality small castings made of aluminum, because they do not deal with the filling of casting molds, but only with the distribution of large quantities of liquid metal on larger casting vessels, such as those used for steel are dealt with, whereby the associated weighing system does not permit the metering of very small quantities of metal.

Zudem sind diese Vorrichtungen dem Erfindungsgegenstand gattungsfremd, weil sie für die Speisung und Dosierung eines kontinuierlich umlaufenden Giesskarussells mit aufgebauten Kokillen weder vorgesehen noch in naheliegender Weise hierfür umrüstbar sind.In addition, these devices are alien to the subject matter of the invention because they are neither provided for the feeding and metering of a continuously rotating casting carousel with built-up molds, nor can they be converted in an obvious manner for this purpose.

Giesskarusselle mit aufgebauten Kokillen sowie auch Druckgussmaschinen werden vielmehr, wie die Praxis zeigt, auch heute noch über ein Schöpflöffelsystem gespeist. Dabei wird ein um einen Weg von ca. 3 bis 4 Meter zwischen der Druckgussmaschine bzw. dem Giesskarussell und dem feststehenden Warmhalteofen verfahrbarer Schöpflöffel verwendet. Der Löffel fährt dabei zum Ofen und taucht senkrecht in das Bad geschmolzenen Metalls ein, wobei die Eintauchtiefe über Kontaktstäbe abgetastet wird. Nach Vollaufen des Löffels wird dieser hochgefahren und das überschüssige Metall im Löffel fliesst in das Metallbad zurück. Darauf wird der gefüllte Löffel zur Giessstelle gefahren und dort in den Einfülltrichter bzw. die Metallzulaufrinne mit 400 bis 500 mm Länge abgegossen.Casting carousels with built-up molds as well as die casting machines are, as practice shows, still fed today via a ladle system. A ladle that can be moved by a distance of approx. 3 to 4 meters between the die casting machine or the casting carousel and the stationary holding furnace is used. The spoon moves to the furnace and dips vertically into the bath of molten metal, the immersion depth being scanned using contact rods. After the spoon is full, the spoon is raised and the excess metal in the spoon flows back into the metal bath. The filled spoon is then moved to the pouring point and poured into the filling funnel or the metal feed channel with a length of 400 to 500 mm.

Bei diesem Verfahren ist ein ständiges Tropfen flüssigen Metalls während des gesamten Arbeitsablaufes, also während des Eintauchens, des Verfahrens und des Abgiessens, unvermeidlich, so dass zwischen Warmhalteofen und Gussstelle immer eine Metallspur vorhanden ist. Darüber hinaus führt der Transport mit dem Löffel zu einem erheblichen Temperaturverlust, so dass das Metall im Warmhalteofen stark überhitzt werden muss.With this process, a constant drop of liquid metal is inevitable during the entire work process, i.e. during immersion, the process and the pouring, so that there is always a trace of metal between the holding furnace and the casting point. In addition, transport with the spoon leads to a considerable loss of temperature, so that the metal in the holding oven must be overheated.

Ein weiterer Nachteil ist, dass aufgrund der ständig steigenden Gussgewichte heute bereits Löffel mit einem Leichtmetallinhalt von 35 kg erforderlich sind, was einen erheblichen mechanischen Aufwand für den Transport- und Eintauchmechanismus erfordert.Another disadvantage is that due to the constantly increasing casting weights, spoons with a light metal content of 35 kg are already required today, which requires considerable mechanical effort for the transport and immersion mechanism.

Der Erfindung liegt die Aufgabe zugrunde, nicht nur die vorgeschilderten Nachteile der bekannten Methode zu vermeiden, sondern darüber hinaus auch eine erhebliche Verkürzung des Giesstaktes und eine praktisch beliebige Steigerung der Metallmenge pro Guss und zudem die Möglichkeit einer vollautomatischen Steuerung des gesamten Giessvorganges zu ermöglichen.The invention has for its object not only to avoid the disadvantages of the known method described above, but also to significantly shorten the casting cycle and to increase the amount of metal per casting practically as desired and also to enable the possibility of fully automatic control of the entire casting process.

Diese Aufgabe löst die Erfindung durch mindestens ein kippbares Giessgefäss, eine diesem nachgeschaltete Vergiessrinne, die horizontal und vertikal verschwenkbar und horizontal verschiebbar gelagert ist, und Einrichtungen zur zeitweiligen Verbindung der Vergiessrinne in der Nähe ihres Auslaufs mit dem kontinuierlich umlaufenden, die Kokillen tragenden Giesskarussell.This object is achieved by the invention with at least one tiltable pouring vessel, a pouring channel connected downstream thereof, which is horizontally and vertically pivotable and horizontally displaceable, and devices for temporarily connecting the pouring channel near its outlet to the continuously rotating pouring carousel carrying the molds.

Bei einer bevorzugten Ausführungsform werden dabei zwei kippbare Giessgefässe verwendet, die abwechselnd eine Metallverteilungsrinne speisen, die in die Vergiessrinne mündet.In a preferred embodiment, two tiltable pouring vessels are used, which alternately feed a metal distribution channel which opens into the pouring channel.

Diese kann mit einer auswechselbaren Metallauslaufdüse versehen sein. Dabei können auch automatische Einrichtungen zur mechanischen Reinigung der Metallauslaufdüse nach jedem oder nach einer bestimmten Anzahl von Abgüssen vorgesehen sein oder die Metallauslaufdüse kann mittels eines motorbetriebenen Stopfens verschliessbar sein, beispielsweise wegen Störungen in der Hydraulik die Vergiessrinne nicht angehoben werden kann.This can be provided with an exchangeable metal outlet nozzle. Automatic devices for mechanical cleaning of the metal outlet nozzle can also be provided after each or after a certain number of castings, or the metal outlet nozzle can be closed by means of a motor-operated plug, for example because of malfunctions in the hydraulics, the pouring channel cannot be raised.

Durch die erfindungsgemässe Vorrichtung ergeben sich gegenüber dem bisher üblichen Verfahren folgende Vorteile:

  • 1. Die Metallüberführung vom Ofen zur Kokille erfolgt ohne jeglichen Metallverlust auf dem Transportweg.
  • 2. Da während des gesamten Giesstaktes kontinuierlich Metall zufliesst, ist die Vergiessrinne sofort nach Beendigung eines Giesstaktes und seitlichem Schwenken in die Ausgangsposition wieder vergiessbereit.
  • 3. Der Metalleinfüllvorgang in die Kokillenöffnung kann durch die an der Vergiessrinne vorgesehene Metallauslaufdüse genau zentriert vorgenommen werden, ohne die bisher üblichen Metallspritzer und das Nachtropfen des Giesslöffels.
  • 4. Durch den gleichmässigen, ruhigen, kontinuierlichen Metallfluss in der Metallverteilungsrinne und der Vergiessrinne bilden sich gegenüber dem Verfahren mit Giesslöfteln wesentlich weniger Oxyde beim Vergiessen, was zu einer besseren Gussqualität des hergestellten Teils führt.
  • 5. Bei der wechselseitigen Verwendung zweier Giessgefässe mit gegenüber den bekannten Giesslöffeln grosser Füllmenge steht trotz kurzer Giesstakte genügend Zeit zur Verfügung, um ein Gefäss gegebenenfalls direkt aus dem Schmelz-oder Warmhalteofen zu füllen, während das andere die Vergiessrinne speist, indem es mit einem Kran aus seinem Kippstuhl herausgezogen und zum Schmelz- oder Warmhalteofen gefahren wird.
  • 6. Durch die genaue Einstellungsmöglichkeit der Rinnenneigung mittels der hydraulischen Kippeinrichtung, die Verwendung auswechselbarer Metallauslaufdüsen und gegebenenfalls die steuerbare Verschliessmöglichkeit dieser Düsen ist eine genaue Dosierung der während eines Gusstaktes zugeführten Metallmenge auch über eine Zeitsteuerung des Gusstaktes möglich, beispielsweise bei kleineren Kokillen, die keine Steigeröffnungen zur Kontrolle des Füllgrades aufweisen.
  • 7. Durch die Möglichkeit, die Metallauslaufdüse automatisch zwischen den Giesstakten zu reinigen, bleibt deren Querschnitt stets unverändert und damit auch die bei einer gewissen Rinnenneigung einer vorgegebenen Giesszeit durchlaufende Metallmenge.
  • 8. Durch die im Rinnendeckel vorgesehene Beheizung kann eine konstante optimale Giesstemperatur gewährleistet werden, was ebenfalls zu einer Steigerung der Gussqualität beiträgt, und
  • 9. der gesamte Giessvorgang kann für jedes Gussgewicht auf verhältnismässig einfache Weise automatisch gesteuert werden.
The device according to the invention has the following advantages over the previously customary method:
  • 1. The metal transfer from the furnace to the mold takes place without any metal loss on the transport route.
  • 2. Since metal flows continuously during the entire pouring cycle, the pouring channel is ready to be poured again immediately after a pouring cycle has ended and swiveled sideways into the starting position.
  • 3. The metal filling process in the mold opening can be precisely centered through the metal outlet nozzle provided on the casting trough be taken without the usual metal splashes and dripping of the pouring spoon.
  • 4. Due to the steady, steady, continuous flow of metal in the metal distribution channel and the pouring channel, significantly fewer oxides are formed during casting compared to the process with pouring vents, which leads to better casting quality of the part produced.
  • 5. With the mutual use of two pouring vessels with a large filling quantity compared to the known pouring spoons, despite short pouring cycles, there is sufficient time to fill one vessel directly from the melting or holding furnace, while the other feeds the pouring channel by using a crane pulled out of his tilting chair and driven to the melting or holding furnace.
  • 6. Due to the exact setting of the channel inclination by means of the hydraulic tilting device, the use of exchangeable metal outlet nozzles and, if necessary, the controllable closing possibility of these nozzles, an exact metering of the amount of metal supplied during a casting cycle is also possible via a timing control of the casting cycle, for example in the case of smaller molds which do not have riser openings to control the filling level.
  • 7. Due to the possibility of automatically cleaning the metal outlet nozzle between the casting cycles, its cross-section always remains unchanged and thus also the amount of metal running through at a certain channel inclination of a predetermined casting time.
  • 8. The heating provided in the gutter cover ensures a constant optimal casting temperature, which also contributes to an increase in the casting quality, and
  • 9. The entire casting process can be controlled automatically for each casting weight in a relatively simple manner.

Die Erfindung ist im folgenden unter Bezugnahme auf die Zeichnung näher beschrieben. Es stellen dar:

  • Fig. 1 Eine Aufsicht auf eine bevorzugte Ausführungsform der Erfindung,
  • Fig. 2 einen Schnitt entlang der Linie 11-11 in Fig. 1.
The invention is described below with reference to the drawing. They represent:
  • 1 is a plan view of a preferred embodiment of the invention,
  • FIG. 2 shows a section along the line 11-11 in FIG. 1.

In der Zeichnung sind mit 1 und 2 zwei Giessgefässe bezeichnet, die mittels hydraulischer Einrichtungen in Kippstühlen 3 und 4 schwenkbar gelagert sind und wechselweise eine Metallverteilungsrinne 5 speisen, deren Auslauf in eine Vergiessrinne 6 mündet.In the drawing, 1 and 2 denote two pouring vessels, which are pivoted by means of hydraulic devices in tilting chairs 3 and 4 and alternately feed a metal distribution channel 5, the outlet of which opens into a pouring channel 6.

Diese, in einem Kipplager 7 um eine horizontale Achse schwenkbar gelagert, kann mit Hilfe eines Hydraulikzylinders 8 in Pfeilrichtung A angehoben bzw. in Pfeilrichtung B in die dargestellte Giesslage abgesenkt werden.This, pivoted about a horizontal axis in a tilting bearing 7, can be raised with the aid of a hydraulic cylinder 8 in the direction of arrow A or lowered in the direction of arrow B into the casting position shown.

Die Vergiessrinne 6 ist mit einer Metallauslaufdüse 9 versehen, die sich in Giessstellung genau über der Öffnung 10 der Kokille 11 befindet.The casting trough 6 is provided with a metal outlet nozzle 9, which is located in the casting position exactly above the opening 10 of the mold 11.

Um diese Position der Metallauslaufdüse während der kontinuierlichen Bewegung der auf dem Giesskarussell 12 aufgebauten Kokille 11 in Pfeilrichtung C zwischen der Kokillenstellung am Eingussanfang 13 und am Eingussende 14 beibehalten zu können, ist die Giessrinne 6 in einem Drehlager 15 um eine vertikale Achse verschwenkbar gelagert und ausserdem auf einer Führung 16 in Richtung der Pfeile D und E horizontal verschiebbar.In order to be able to maintain this position of the metal outlet nozzle during the continuous movement of the mold 11 built on the casting carousel 12 in the direction of arrow C between the mold position at the beginning 13 and at the end 14 of the casting, the pouring channel 6 is mounted in a pivot bearing 15 so as to be pivotable about a vertical axis and also horizontally displaceable on a guide 16 in the direction of arrows D and E.

Um sicherzustellen, dass die Vergiessrinne 6 der Bewegung des Giesskarussells folgt, ist eine zeitweilige Verbindung zwischen beiden Teilen vorgesehen, und hierzu dient ein mittels eines Hydraulikzylinders 17 verschiebbarer Zentrierbolzen 18, der in eine Öffnung eines Kupplungsstücks 19 an der Unterseite der Rinne 6 in der Nähe ihres Auslaufs eingreifen kann.In order to ensure that the casting trough 6 follows the movement of the casting carousel, a temporary connection is provided between the two parts, and for this purpose a centering pin 18, which can be displaced by means of a hydraulic cylinder 17, is used, which into an opening of a coupling piece 19 on the underside of the trough 6 in the vicinity of their outlet can intervene.

Die auswechselbare Metallauslaufdüse 9 kann dabei mittels einer durch einen Motor 20 betätigbaren Stopfens 21, beispielsweise bei Störung in der Hydraulikanlage, die ein Anheben der Rinne am Ende des Giesstaktes verhindern, verschlossen werden. Falls erforderlich, kann dabei mittels des Stopfens 21 auch der Düsenquerschnitt verändert werden, sofern man nicht die ganze Düse auswechseln will.The exchangeable metal outlet nozzle 9 can be closed by means of a plug 21 which can be actuated by a motor 20, for example in the event of a malfunction in the hydraulic system which prevents the channel from lifting at the end of the pouring cycle. If necessary, the nozzle cross-section can also be changed by means of the plug 21, provided that the entire nozzle is not to be replaced.

Anstelle des Stopfens 21 oder zusätzlich zu diesem kann auch eine automatische Reinigungseinrichtung (nicht dargestellt), z. B. in Form einer pneumatisch betätigten Metallbürste, vorgesehen sein, die zwischen den einzelnen Giesstakten, also bei angehobener Vergiessrinne 6, automatisch die Metallauslaufdüse 9 von Rückständen reinigt und so für einen konstanten Durchtrittsquerschnitt sorgt.Instead of the plug 21 or in addition to this, an automatic cleaning device (not shown), e.g. B. in the form of a pneumatically actuated metal brush, which automatically cleans the metal outlet nozzle 9 of residues between the individual pouring cycles, that is to say with the pouring channel 6 raised, and thus ensures a constant passage cross section.

Die Rinne kann durch eine abnehmbare, z.B. abklappbare, in Fig. 1 nicht dargestellte Rinnenabdeckung 22, 23 über den grössten Teil ihrer Länge verschlossen sein, wobei in dieser Rinnenabdeckung Heizeinrichtungen 24 und 25 zur Gewährleistung einer gleichmässigen Giesstemperatur vorgesehen sein können.The gutter can be detached, e.g. foldable channel cover 22, 23, not shown in FIG. 1, can be closed over most of its length, heating devices 24 and 25 being able to be provided in this channel cover to ensure a uniform casting temperature.

Die Funktion der erfindungsgemässen Vorrichtung ist dabei folgendermassen: Zunächst wird die Vergiessrinne 6 in angehobenem Zustand mittels einer nicht dargestellten Hydraulikeinrichtung in die dem Eingussanfang 13 entsprechende Stellung geschwenkt. Erreicht die auf dem Giesskarussell 12 aufgebaute Kokille 11 diese Position, wird die Giessrinne automatisch abgesenkt, so dass die Metallauslaufdüse 9 über der Öffnung 10 der Kokille 11 steht. Mittels der Teile 17, 18, 19 erfolgt dabei die Kupplung der Rinne 6 mit dem Giesskarussell 12, wobei unmittelbar nach Absenken der Rinne das Metall in die Kokillenöffnung fliesst. Durch eine in der Rinne eingebaute Querschnittsverengung, beispielsweise in Form einer Trennplatte 26 mit kleiner Öffnung 27, können dabei ein besonders ruhiger Metallfluss beim Giessen erreicht und gleichzeitig Schlackenreste zurückgehalten werden.The function of the device according to the invention is as follows: First, the pouring channel 6 is pivoted in the raised state by means of a hydraulic device (not shown) into the position corresponding to the beginning of the pouring 13. If the mold 11 built on the casting carousel 12 reaches this position, the casting trough is automatically lowered, so that the metal outlet nozzle 9 is above the opening 10 of the mold 11. By means of the parts 17, 18, 19, the channel 6 is coupled to the casting carousel 12, the metal flowing into the mold opening immediately after the channel has been lowered. A narrowing of the cross section built into the trough, for example in the form of a separating plate 26 with a small opening 27, enables a particularly smooth metal flow to be achieved during casting and at the same time residues of slag to be retained.

Bei grösseren Kokillen wird der Füllvorgang durch eingebaute Kontaktstäbe (nicht dargestellt) in Verbindung mit den Steigeröffnungen in den Kokillen überwacht. Über diese Impulsgeber wird die Metallflussmenge gegebenenfalls über eine Stromregelgruppe der Hydraulik durch Veränderung der Kippgeschwindigkeit des Giessgefässes, der Rinnenneigung und eventuen auch durch Verstellung des Durchflussquerschnittes der Metallauslaufdüse 9 mittels des Stopfens 21 geregelt.In the case of larger molds, the filling process is monitored by built-in contact bars (not shown) in connection with the riser openings in the molds. The metal flow rate is optionally via a Flow control group of the hydraulics regulated by changing the tilting speed of the casting vessel, the trough inclination and possibly also by adjusting the flow cross-section of the metal outlet nozzle 9 by means of the plug 21.

Bei kleineren Kokillen, die nicht über Steigeröffnungen verfügen, erfolgt die Gusssteuerung mittels einer vorgegebenen Giesszeit, wobei durch den ruhigen Metallfluss und den bei automatischer Reinigung der Metallauslaufdüse gewährleisteten unveränderlichen Durchtrittsquerschnitt eine genau dosierte Metallmenge pro Guss gesichert ist.In the case of smaller molds that do not have riser openings, the casting is controlled by means of a predetermined casting time, whereby the smooth metal flow and the constant passage cross-section guaranteed with automatic cleaning of the metal outlet nozzle ensure a precisely metered amount of metal per casting.

Durch die Möglichkeit, sich in dem Drehlager 15 zu drehen und gleichzeitig auf der Führung 16 in Pfeilrichtung D-E zu verschieben, kann die Rinne 6 dabei der kontinuierlichen Bewegung der Kokille 11 folgen, ohne dass der kontinuierliche Metallzufluss während des Giessvorganges beeinträchtigt wird.Due to the possibility of rotating in the pivot bearing 15 and at the same time shifting on the guide 16 in the direction of arrow D-E, the channel 6 can follow the continuous movement of the mold 11 without the continuous metal flow being impaired during the casting process.

Nach Erreichen des Eingussendes in der Stellung 14 wird die Rinne 6 mittels des Hydraulikzylinders 8 automatisch hochgekippt und damit gegebenenfalls auch noch durch Verschliessen der Metallauslaufdüse 9 mittels des Stopfens 21 der Giessvorgang beendet. Gleichzeitig wird der Zentrierbolzen 18 mittels des Hydraulikzylinders 17 zurückgezogen und so die Verbindung zwischen der Rinne und dem Giesskarussell gelöst. Daraufhin wird die Rinne wieder in die Stellung 13 zurückgeschwenkt und ist sofort für einen neuen Giessvorgang bereit.After reaching the pouring end in position 14, the channel 6 is automatically tilted up by means of the hydraulic cylinder 8 and, if appropriate, the casting process is also ended by closing the metal outlet nozzle 9 by means of the stopper 21. At the same time, the centering pin 18 is retracted by means of the hydraulic cylinder 17, thus releasing the connection between the channel and the casting carousel. The channel is then pivoted back into position 13 and is immediately ready for a new casting process.

Während des gesamten Giess- und Schwenkvorganges erfolgt ständig ein kontinuierlicher Metallzulauf von dem jeweiligen Giessgefäss 1 bzw. 2 über die Metallverteilungsrinne 5 zur Giessrinne 6. Der Wechsel von einem Giessgefäss auf das andere erfolgt ebenfalls vollautomatisch über die (nicht dargestellte) Kipphydraulik der Giessgefässe, wobei bei Erreichen eines bestimmten Kippwinkels das zweite Giessgefäss in Giessposition kippt und nach einem erneuten Impuls mit dem Ausgiessen anfängt, während gleichzeitig das andere Giessgefäss zurückkippt, gegebenenfalls mittels eines Krans, aus seinem Kippstuhl herausgenommen und direkt zur Auffüllung zum Metallreservoir gebracht werden kann.During the entire pouring and swiveling process, there is a continuous metal supply from the respective pouring vessel 1 or 2 via the metal distribution channel 5 to the pouring channel 6. The change from one pouring vessel to the other is likewise carried out fully automatically via the tilting hydraulics (not shown) of the pouring vessels, whereby when a certain tipping angle is reached, the second tundish tilts into the pouring position and after a renewed impulse starts pouring out, while at the same time the other tundish tilts back, if necessary by means of a crane, can be removed from its tipping chair and taken directly to the metal reservoir for filling.

Dabei ergibt sich unter Zugrundelegung einer maximalen Giessleistung von 3600 kg AI/h und zwei Giessgefässen mit einem nutzbaren Metallvolumen von je 1800-2000 kg eine Einsatzzeit pro Giessgefäss von 30 Min., wobei ein Giesstakt z. B. jeweils 30 Sek. und dabei die Giesszeit 10-12 Sek. betragen kann und für das Nachfüllen des nicht im Einsatz befindlichen Giessgefässes ein reichlicher Zeitraum von ca. 25 Min. zur Verfügung steht.On the basis of a maximum pouring capacity of 3600 kg AI / h and two pouring vessels with a usable metal volume of 1800-2000 kg each, an operating time per pouring vessel of 30 minutes. B. 30 seconds each and the pouring time can be 10-12 seconds and there is a sufficient period of approx. 25 minutes for refilling the pouring vessel not in use.

Die Steuerung der Heizeinrichtung 24 und 25 erfolgt ebenfalls automatisch über entsprechende Temperaturfühler.The heating devices 24 and 25 are also controlled automatically by appropriate temperature sensors.

Mit Hilfe einer verhältnismässig einfachen Steuerung ist es mittels der erfindungsgemässen Einrichtung möglich,.auch bei kontinuierlich umlaufendem Giesskarussell den gesamten Gussbetrieb, also das abwechselnde Beschicken der Giessrinne durch die zwei Giessgefässe, das Absenken bzw. Anheben der Rinne, deren Kupplung mit dem Giesskarussell, die Dosierung der Metallmenge, die Regelung der Temperatur der Schmelze in der Rinne, die Beendigung des Giessvorganges, die Entkupplung der Rinne und ihr Zurückschwenken in die Ausgangsposition, vollautomatisch durchzuführen. Dabei wird durch die Möglichkeit, die Metallauslaufdüse 9 zu verschliessen und die Gewährleistung einer genauen Stellung dieser Düse über der Giessöffnung der Kokille, selbst im Notfall einer Störung ein Überlaufen und ein Nachtropfen mit Sicherheit vermieden. Ausserdem kann der Giessvorgang jederzeit unterbrochen werden, ohne Störungen und Komplikationen beim Wiederanfahrbetrieb.With the aid of a relatively simple control, it is possible by means of the device according to the invention, even with a continuously rotating casting carousel, for the entire casting operation, i.e. the alternate loading of the pouring channel through the two pouring vessels, the lowering or raising of the channel, its coupling with the casting carousel, the Metering of the amount of metal, the regulation of the temperature of the melt in the channel, the completion of the casting process, the uncoupling of the channel and its pivoting back to the starting position, to be carried out fully automatically. The possibility of closing the metal outlet nozzle 9 and ensuring that this nozzle is positioned precisely over the pouring opening of the mold reliably prevents overflow and dripping even in the event of a malfunction. In addition, the casting process can be interrupted at any time, without disruptions and complications when restarting.

Claims (9)

1. A device for supplying a continoùsly rotating casting table (12), onto which moulds (11) are mounted, preferably for light metal, characterized by at least one tiltable casting vessel (1 or 2 respectively), a casting gutter (6) downstream of the latter, swivel mounted in horizontal (15) and vertical (7) directions and horizontally slidable, and by means for the temporary connection of the casting gutter close to its spoute with the continously rotating casting table (12) supporting the moulds (11).
2. A device according to claim 1, characterized by two tiltable casting vessels (1, 2) alternatively feeding a metal distribution gutter (5) leading to the casting gutter (6).
3. A device according to claim 1, characterized by the casting gutter (6) comprising an interchangeable metal discharging nozzle (9).
4. A device according to claim 3, characterized by a motor operated plug (21) for closing the metal discharging nozzle (9).
5. A device according to claim 3, characterized by automatic cleaning means for the metal discharge nozzle (9).
6. A device according to claim 1, characterized by space (clearence, section) reducing means within the casting gutter (6) e.g. a partition plate (26) with a small opening (27).
7. A device according to claim 1, characterized by the casting gutter (6) being provided with a detachable gutter cover (22, 23).
8. A device according to claim 7, characterized by the gutter cover (22, 23) comprising heating means (24, 25).
9. A device according to claim 1, characterized by impulse transmitting means within the casting gutter (6) for controlling the tilting speed of the casting vessels (1, 2), means for controlling.the tilting angle of the casting vessels and the melting temperature within the casting gutter (6) and control means for the adequate actuation of the hydraulic means for the casting vessels (1, 2), the casting gutter (6) and of a spigot bolt (18).
EP19790103813 1978-11-22 1979-10-05 Device for supplying a continuously rotating casting table Expired EP0011696B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782850563 DE2850563A1 (en) 1978-11-22 1978-11-22 CASTING DEVICE, PREFERRED FOR LIGHT METAL
DE2850563 1978-11-22

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EP0011696A1 EP0011696A1 (en) 1980-06-11
EP0011696B1 true EP0011696B1 (en) 1982-05-26
EP0011696B2 EP0011696B2 (en) 1987-02-04

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EP19790103813 Expired EP0011696B2 (en) 1978-11-22 1979-10-05 Device for supplying a continuously rotating casting table

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745736A1 (en) * 1996-03-07 1997-09-12 Hugot Pierre Furnace for temperature maintenance or for maintaining in the molten state a metal or alloy
USD470108S1 (en) 2000-09-19 2003-02-11 Yueqing Huameili Electronic Co., Ltd. Electrical outlet with ground fault circuit interrupter

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Publication number Priority date Publication date Assignee Title
ES2006806A6 (en) * 1988-02-03 1989-05-16 Remetal Sa Improvements in liquid metal distribution systems in billet moulds.
DE19902441A1 (en) * 1999-01-22 2000-07-27 Sms Demag Ag Pig casting machine, especially for casting iron pigs, has a melt distributor with a melt reception portion connected to a pouring portion by a bottom opening in a partition wall
GB0116548D0 (en) * 2001-07-06 2001-08-29 Mcp Equipment Moulding Equipment
FI119418B (en) * 2004-12-30 2008-11-14 Outotec Oyj Trench for casting molten copper
EP3216542A1 (en) * 2016-03-08 2017-09-13 Krown Servicios Integrales de Fundicion, S.A. System for pouring molten metal into injection chambers
CN111331114B (en) * 2020-03-07 2022-02-01 临清市鑫迈机械有限公司 Full-automatic quantitative casting method

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Publication number Priority date Publication date Assignee Title
DE201076C (en) *
FR1441657A (en) * 1965-04-27 1966-06-10 Siderurgie Fse Inst Rech Metal casting refinements
DE2101244A1 (en) * 1971-01-13 1972-08-03 Fried. Krupp Gmbh, 4300 Essen Tiltable melt distributor - permitting individual slope adjustment of each channel
FR2128050B1 (en) * 1971-03-02 1975-07-04 Siderurgie Fse Inst Rech
US3923094A (en) * 1973-02-19 1975-12-02 Dowa Mining Co Casting apparatus for casting large-sized ingots
DE2344257A1 (en) * 1973-09-01 1975-03-06 Otto Dipl Ing Bolland Mechanical, valveless dosing device for molten metals - for filling casting machines or moulds, esp. with magnesium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745736A1 (en) * 1996-03-07 1997-09-12 Hugot Pierre Furnace for temperature maintenance or for maintaining in the molten state a metal or alloy
USD470108S1 (en) 2000-09-19 2003-02-11 Yueqing Huameili Electronic Co., Ltd. Electrical outlet with ground fault circuit interrupter

Also Published As

Publication number Publication date
EP0011696B2 (en) 1987-02-04
DE2850563A1 (en) 1980-06-04
EP0011696A1 (en) 1980-06-11

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