EP0398168B1 - Low pressure die casting apparatus - Google Patents

Low pressure die casting apparatus Download PDF

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Publication number
EP0398168B1
EP0398168B1 EP90108862A EP90108862A EP0398168B1 EP 0398168 B1 EP0398168 B1 EP 0398168B1 EP 90108862 A EP90108862 A EP 90108862A EP 90108862 A EP90108862 A EP 90108862A EP 0398168 B1 EP0398168 B1 EP 0398168B1
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EP
European Patent Office
Prior art keywords
casting
carrier device
casting apparatus
furnace
pivot axis
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 - Lifetime
Application number
EP90108862A
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German (de)
French (fr)
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EP0398168A1 (en
Inventor
Harry Hässig
Johann Martin Stöckli
Valentin Müller
Rudolf Hofmann
Theo Gassner
Edwin Kindle
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Franke Technology and Trademark Ltd
Original Assignee
KWC AG
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Filing date
Publication date
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Priority to AT90108862T priority Critical patent/ATE85919T1/en
Publication of EP0398168A1 publication Critical patent/EP0398168A1/en
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Publication of EP0398168B1 publication Critical patent/EP0398168B1/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
    • B22D33/00—Equipment for handling moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D47/00—Casting plants

Definitions

  • the present invention relates to a low-pressure mold casting device according to the preamble of claim 1.
  • Such a casting device is described in CH-PS 637 856.
  • This has a rotatably mounted column arranged on the side of the furnace, on which a support frame sits in a rotationally fixed manner.
  • a bearing head for a carrying device is guided on the supporting frame so as to be displaceable in the vertical direction.
  • This has support members on which the mold parts are arranged and which are mounted so as to be displaceable and pivotable.
  • a disadvantage of the known device is that large openings have to be provided or made in the foundry floor so that parts of the device can be lowered into them, so that the footprint of the device for the operating personnel is approximately at the same level as the foundry floor.
  • the opening of such openings is associated with great effort, in particular when the device is installed in already existing buildings. This can also reduce the load capacity of the foundry floor.
  • a turntable On the cross member of a portal-shaped support frame, the supports of which are provided outside the pivoting range of the support device, a turntable is arranged, about the axis of rotation of which the support device for the mold parts can be pivoted.
  • the turntable is located above the furnace and any other workstations, which allows the columns to be placed on the foundry floor; no space is required on, in or under the floor for a column to be pivoted.
  • the forces are distributed in the foundry floor, which leads to smaller surface loads.
  • the entire area between the columns and below the turntable is free for setting up the furnace or other work stations. This allows a compact design, whereby the axis of rotation can also run through the furnace or another work station.
  • the low-pressure mold casting device shown in the figures has a melting furnace 10, the supporting frame 12 of which is arranged lying on the foundry floor 14.
  • the melting furnace 10 is of a known type and has a riser pipe 18 opening into a pouring mouth 16 arranged on the melting furnace 10 (see FIG. 3).
  • a portal-shaped support frame 20 has four columns 22, 22 ', which are arranged approximately at the corners of a square floor plan, two columns 22 are supported laterally of the melting furnace 10 on its support frame 12 and the other two columns 22' attached to the foundry floor 14 are.
  • Each column 22 is connected at the upper end by a side member 24 with the corresponding column 22 '.
  • the two side members 24 carry two cross members 26 which run at right angles to the side members 24 and are spaced apart in the direction of the side members 24 and on which a turntable 28 is arranged approximately in the center.
  • the axis of rotation 30 of the rotary table 28, indicated by dash-dotted lines, extends in the vertical direction and to the side of the melting furnace 10.
  • the rotary table 28 is driven by an electric motor 34 via an indexing gear 32.
  • a two-armed arm 36 is arranged on the turntable 28, which at both ends, from the axis of rotation 30 equally far away, each carries a carrying device 38 for the molds 41 consisting of two mold parts 40.
  • Each support device 38 has a vertical support profile 42 which is guided on the arm 36 so as to be displaceable in the vertical direction. 1 and 2 in the horizontal and in the radial direction with respect to the axis of rotation 30 running rail profile 44 is pivotally mounted at the lower end region of the support profile 42 about a horizontal axis and perpendicular to the longitudinal extension of the rail profile 44 pivot axis 46. On the outer end region of the rail profile 44, seen in the radial direction, a support element 48 protruding downward is fastened thereon, on which a support 50 is rotatably mounted about a pivot axis 52 running parallel to the pivot axis 46.
  • a slide 54 which also projects downward, is guided on the rail profile 44 so as to be displaceable in the direction of arrow A.
  • a carrier 50 is also mounted on the carriage 54 so as to be pivotable about a further pivot axis 52 running parallel to the pivot axis 46.
  • the two carriers 50 are from the parallel to the rail profile 44 and aligned rest position, in which the free ends of the carrier 50 are directed towards each other, by 90 ° in a dash-dotted and indicated by 50 'pivotable position in which the carrier 50 is at right angles protrude from the rail profile 44.
  • the mold parts 40 are fastened to the free ends of the carriers 50. When the carrier 50 is pivoted in the rest position and the carriage 54 is in the closed position, the mold parts 40 lie against one another, when the carriage 54 is in the open position, the mold parts 40 are spaced apart.
  • the parting plane 56 between the two mold parts 40 is a vertical plane and extends at right angles to the longitudinal extent of the rail profile 44, which is radial in relation to the axis of rotation 30 when the mold 41 is filled Direction runs.
  • One ejection element 58 is provided in each of the carriers 50 in order to eject the cast parts from the mold parts 40 which are spaced apart from one another.
  • the support device 38 shown on the left is in the pouring position above the melting furnace 10 and the other support device 38 is above a size bath 60 diametrically opposite the melting furnace 10 with respect to the axis of rotation 30. This is on the foundry floor 14.
  • a removal station 62 is provided, as seen in a clockwise direction U, offset by 90 °.
  • This has a conveyor 64 driven in the conveying direction F for the cast parts, which are ejected from the mold parts 40 by means of the ejection elements 58.
  • a blasting device 66 for sandblasting the mold parts 40 is also assigned to the removal station 62.
  • the removal station 62 is diametrically opposite a core insertion station indicated by the arrow 68.
  • the mode of operation of the low-pressure mold casting device shown in FIGS. 1 and 2 will now be explained in more detail with reference to FIGS. 3 to 7.
  • the one of the two carrying devices 38 is tracked in the course of a working cycle.
  • the working cycles of the two carrying devices 38 are identical but shifted by half a cycle.
  • the carrying device 38 is in the pouring position above the melting furnace 10, the mold parts 40 lying against one another being deposited on the pouring mouth 16 of the riser pipe 18.
  • the casting compound is conveyed through the riser pipe 18 and the pouring mouth 16 into the mold 41.
  • the mold 41 is lifted from the melting furnace 10 by lifting the carrying device 38 and brought to the removal station 62 by rotating the turntable 28 in the direction of the arrow U by 90 °.
  • the mold parts 40 are separated from one another by moving the slide 54 from the closed position into the open position along the rail profile 44, as shown in FIG. 4.
  • the ejection elements 58 By actuating the ejection elements 58, the cast parts are ejected from the mold parts 40, which fall onto the conveyor 64 which is only indicated schematically.
  • the carrying device 38 comes to lie over the size bath 60 (FIG. 5) and is lowered.
  • the carriers 50 are pivoted about the pivot axis 52 into the pivot position 50 ', whereby the mold parts 40 are immersed in the size bath 60, avoiding the formation of air cushions in the recesses of the mold parts 40.
  • the surfaces of the mold parts 40 facing the parting plane 56 in the sizing bath 60 are directed downward.
  • the carrying device 38 is then raised again and the supports 50 are pivoted back into the rest position aligned with one another.
  • the carrying device 38 By turning the turntable 28 again by 90 °, the carrying device 38 reaches the core insertion station 68.
  • the rail profile 44 is pivoted 90 ° about the pivot axis 46 in a counterclockwise direction into a vertical position, whereby the now horizontal mold parts 40 with respect to the axis of rotation 30, seen in the radial direction, lie outside the rail profile 40.
  • This enables problem-free insertion of the cores by operating personnel or an automatic core insertion machine (not shown).
  • the mold 41 is closed by moving the slide 54 in the direction of arrow A into the closed position towards the top (FIG. 6).
  • the rail profile 44 is then pivoted 90 ° clockwise about the pivot axis 46. After a further rotation in the direction of arrow U of the turntable by 90 ° and the mold 41 being lowered onto the pouring mouth 16 of the melting furnace 10, the working cycle is ended.
  • the carrier 50 is in the pivoting position when the carrying device 38 is located in the removal station 62 50 'brought and the rail profile 44 pivoted about the pivot axis counterclockwise by 90 ° (Fig. 7).
  • the carriers 50 extend in the radial direction with respect to the axis of rotation 30, so that the mold parts 40 can now be cleaned freely accessible by means of the jet device 66.
  • the rail profile 44 is pivoted back into the horizontal position and the carrier 50 is pivoted back into the rest position, and the carrying device 38 is covered by rotating the turntable 28 through 90 ° via the sizing bath 60, after which the known working cycle continues.
  • furnace 10 and the work stations are arranged along the swivel circle of the carrying device 38 about the axis of rotation 30.
  • the movement of all parts of the device takes place via known electrical, hydraulic and / or pneumatic drives which are controlled by a preferably programmable electrical control.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Confectionery (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

Secured on the portal-like supporting frame (20) is the turntable (28), on the double-armed crossbeam (36) of which two supporting devices (38) for the dies (41) are arranged in a manner which allows them to be raised and lowered. The axis (30) of rotation of the turntable (28) extends between the melting furnace (10) and the coating bath (60). The pillars (22, 22') of the supporting frame (20) are provided outside the swivelling range of the supporting device (38). The supporting device (38) can be swivelled about the axis (30) of rotation from the casting position above the melting furnace (10) to the coating bath (60) and further workstations. The rail profile (44) is mounted to be swivellable about the axis (46) on the supporting profile (42) displaceable in the vertical direction. The die parts (40) are arranged on supports (50) which are mounted on the supporting element (48) and slide (54) in such a way as to be swivellable about the swivelling axes (52). <IMAGE>

Description

Die vorliegende Erfindung betrifft eine Niederdruck-Kokillen-Giesseinrichtung gemäss dem Oberbegriff des Anspruchs 1.The present invention relates to a low-pressure mold casting device according to the preamble of claim 1.

Eine solche Giesseinrichtung ist in der CH-PS 637 856 beschrieben. Diese weist eine seitlich des Ofens angeordnete, drehbar gelagerte Säule auf, auf welcher ein Tragrahmen drehfest sitzt. Am Tragrahmen ist ein Lagerkopf für eine Tragvorrichtung in vertikaler Richtung verschiebbar geführt. Diese weist Tragglieder auf, an welchen die Kokillenteile angeordnet sind und welche relativ zueinander verschiebbar und verschwenkbar gelagert sind. Durch Verschwenken der Säule werden die Kokillenteile von der Giessstellung über den Giessmund des Ofens zum Entnehmen der gegossenen Teile, Schlichten der Kokillenteile und Einlegen eines neuen Kerns über ein neben dem Ofen vorgesehenes Schlichtbad und wieder zurück verbracht. Ein Nachteil der bekannten Einrichtung besteht darin, dass im Giessereiboden grosse Oeffnungen vorzusehen bzw. anzubringen sind, um Teile der Einrichtung in diese Absenken zu können, sodass die Standfläche der Einrichtung für das Bedienungspersonal etwa auf gleicher Höhe wie der Giessereiboden liegt. Das Anbringen solcher Oeffnungen ist, insbesondere beim Einbau der Einrichtung in bereits bestehende Gebäude, mit grossem Aufwand verbunden. Dies kann auch zu Verminderung der Tragkraft des Giessereibodens führen.Such a casting device is described in CH-PS 637 856. This has a rotatably mounted column arranged on the side of the furnace, on which a support frame sits in a rotationally fixed manner. A bearing head for a carrying device is guided on the supporting frame so as to be displaceable in the vertical direction. This has support members on which the mold parts are arranged and which are mounted so as to be displaceable and pivotable. By swiveling the column, the mold parts are moved from the pouring position over the pouring mouth of the furnace to remove the cast parts, finish the mold parts and insert a new core through a sizing bath provided next to the furnace and back again. A disadvantage of the known device is that large openings have to be provided or made in the foundry floor so that parts of the device can be lowered into them, so that the footprint of the device for the operating personnel is approximately at the same level as the foundry floor. The opening of such openings is associated with great effort, in particular when the device is installed in already existing buildings. This can also reduce the load capacity of the foundry floor.

Es ist deshalb eine Aufgabe der vorliegenden Erfindung eine gattungsgemässe Niederdruck-Kokillen-Giesseinrichtung zu schaffen, welche ohne wesentliche Eingriffe in den Giessereiboden auf diesen montierbar ist, ohne dass sich dabei die Standfläche für das Bedienungspersonal wesentlich vom Giessereiboden abhebt.It is therefore an object of the present invention Generate low-pressure mold casting device of the generic type, which can be mounted on the foundry floor without substantial interventions, without the operating area standing out significantly for the operating personnel from the foundry floor.

Diese Aufgabe wird durch die Merkmale des kennzeichnenden Teiles des Anspruchs 1 gelöst.This object is achieved by the features of the characterizing part of claim 1.

Am Querträger eines portalförmigen Traggestells, dessen Stützen ausserhalb dem Schwenkbereich der Tragvorrichtung vorgesehen sind, ist ein Drehtisch angeordnet, um dessen Drehachse die Tragvorrichtung für die Kokillenteile schwenkbar ist. Der Drehtisch ist oberhalb des Ofens und eventuellen weiteren Arbeitsstationen angeordnet, was ermöglicht, dass die Säulen auf den Giessereiboden stellbar sind; es wird kein Raum auf dem, im oder unter dem Boden für eine Drehlagerung einer Säule benötigt. Ueberdies werden die Kräfte verteilt in den Giessereiboden eingeleitet, was zu kleinere Flächenbelastungen führt. Der gesamte Bereich zwischen den Säulen und unterhalb des Drehtisches ist frei für das Aufstellen des Ofens bzw. weiteren Arbeitsstationen. Dies erlaubt eine kompakte Bauweise, wobei die Drehachse durchaus auch durch den Ofen oder eine weitere Arbeitsstation verlaufen kann.On the cross member of a portal-shaped support frame, the supports of which are provided outside the pivoting range of the support device, a turntable is arranged, about the axis of rotation of which the support device for the mold parts can be pivoted. The turntable is located above the furnace and any other workstations, which allows the columns to be placed on the foundry floor; no space is required on, in or under the floor for a column to be pivoted. In addition, the forces are distributed in the foundry floor, which leads to smaller surface loads. The entire area between the columns and below the turntable is free for setting up the furnace or other work stations. This allows a compact design, whereby the axis of rotation can also run through the furnace or another work station.

Bevorzugte Ausbildungsformen der Einrichtung sind in den abhängigen Ansprüchen angegeben.Preferred forms of training of the facility are specified in the dependent claims.

Die Erfindung wird nun anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher beschrieben. Es zeigen rein schematisch:

  • Figuren 1 und 2 in Ansicht bzw. Draufsicht eine Giesseinrichtung, und
  • Figuren 3 bis 7 Teile der Einrichtung bei verschiedenen Phasen eines Arbeitszyklus.
The invention will now be described with reference to an embodiment shown in the drawing. It shows purely schematically:
  • Figures 1 and 2 in view and plan view of a pouring device, and
  • Figures 3 to 7 parts of the device at different phases of a work cycle.

Die in den Figuren dargestellte Niederdruck-Kokillen-Giesseinrichtung weist einen Schmelzofen 10 auf, dessen Tragrahmen 12 auf dem Giessereiboden 14 liegend angeordnet ist. Der Schmelzofen 10 ist bekannter Bauart und weist ein in einen auf dem Schmelzofen 10 angeordneten Giessmund 16 mündendes Steigrohr 18 auf (siehe Fig. 3). Ein portalförmiges Traggestell 20 weist vier Säulen 22, 22′ auf, die ungefähr an den Ecken eines quadratischen Grundrisses angeordnet sind, wobei zwei Säulen 22 sich seitlich des Schmelzofens 10 auf dessen Tragrahmen 12 abstützen und die anderen beiden Säulen 22′ auf dem Giessereiboden 14 befestigt sind. Jede Säule 22 ist am oberen Ende durch einen Längsträger 24 mit der entsprechenden Säule 22′ verbunden. Die beiden Längsträger 24 tragen zwei rechtwinklig zu den Längsträgern 24 verlaufende, in Richtung der Längsträger 24 voneinander beabstandete Querträger 26, an welchen ungefähr mittig ein Drehtisch 28 angeordnet ist. Die strichpunktiert angedeutete Drehachse 30 des Drehtisches 28 verläuft in vertikaler Richtung und seitlich des Schmelzofens 10. Der Drehtisch 28 ist über ein Indexiergetriebe 32 von einem Elektromotor 34 angetrieben.The low-pressure mold casting device shown in the figures has a melting furnace 10, the supporting frame 12 of which is arranged lying on the foundry floor 14. The melting furnace 10 is of a known type and has a riser pipe 18 opening into a pouring mouth 16 arranged on the melting furnace 10 (see FIG. 3). A portal-shaped support frame 20 has four columns 22, 22 ', which are arranged approximately at the corners of a square floor plan, two columns 22 are supported laterally of the melting furnace 10 on its support frame 12 and the other two columns 22' attached to the foundry floor 14 are. Each column 22 is connected at the upper end by a side member 24 with the corresponding column 22 '. The two side members 24 carry two cross members 26 which run at right angles to the side members 24 and are spaced apart in the direction of the side members 24 and on which a turntable 28 is arranged approximately in the center. The axis of rotation 30 of the rotary table 28, indicated by dash-dotted lines, extends in the vertical direction and to the side of the melting furnace 10. The rotary table 28 is driven by an electric motor 34 via an indexing gear 32.

Abgangsseitig ist am Drehtisch 28 ein zweiarmiger Ausleger 36 angeordnet, welcher an beiden Enden, von der Drehachse 30 gleichweit entfernt, je eine Tragvorrichtung 38 für die aus zwei Kokillenteilen 40 bestehenden Kokillen 41 trägt.On the outlet side, a two-armed arm 36 is arranged on the turntable 28, which at both ends, from the axis of rotation 30 equally far away, each carries a carrying device 38 for the molds 41 consisting of two mold parts 40.

Jede Tragvorrichtung 38 weist ein verikales Tragprofil 42 auf, das am Ausleger 36 in vertikaler Richtung verschiebbar geführt ist. Ein in den Figuren 1 und 2 in horizontaler und bezüglich der Drehachse 30 in radialer Richtung verlaufendes Schienenprofil 44 ist am unteren Endbereich des Tragprofils 42 um eine in horizontaler Richtung und rechtwinklig zur Längserstreckung des Schienenprofils 44 verlaufende Schwenkachse 46 schwenkbar gelagert. Am in radialer Richtung gesehen äusseren Endbereich des Schienenprofils 44 ist an diesem ein in Richtung nach unten vorstehendes Tragelement 48 befestigt, an welchem ein Träger 50 um eine parallel zur Schwenkachse 46 verlaufende Schwenkachse 52 drehbar gelagert ist. Am Schienenprofil 44 ist weiter ein ebenfalls nach unten vorstehender Schlitten 54 in Pfeilrichtung A verschiebbar geführt. Am Schlitten 54 ist ebenfalls ein Träger 50 um eine weitere, parallel zur Schwenkachse 46 verlaufende Schwenkachse 52 schwenkbar gelagert. Die beiden Träger 50 sind aus der parallel zum Schienenprofil 44 verlaufenden und miteinander fluchtenden Ruhelage, in welcher die freien Enden der Träger 50 gegeneinander gerichtet sind, um 90° in eine strichpunktiert angedeutete und mit 50′ bezeichnete Schwenklage bringbar, in welcher die Träger 50 rechtwinklig vom Schienenprofil 44 abstehen. An den freien Enden der Träger 50 sind die Kokillenteile 40 befestigt. Bei in Ruhelage verschwenkten Trägern 50 und sich in Schliessstellung befindendem Schlitten 54 liegen die Kokillenteile 40 aneinander an, bei sich in Offenstellung befindendem Schlitten 54 sind die Kokillenteile 40 voneinander beabstandet.Each support device 38 has a vertical support profile 42 which is guided on the arm 36 so as to be displaceable in the vertical direction. 1 and 2 in the horizontal and in the radial direction with respect to the axis of rotation 30 running rail profile 44 is pivotally mounted at the lower end region of the support profile 42 about a horizontal axis and perpendicular to the longitudinal extension of the rail profile 44 pivot axis 46. On the outer end region of the rail profile 44, seen in the radial direction, a support element 48 protruding downward is fastened thereon, on which a support 50 is rotatably mounted about a pivot axis 52 running parallel to the pivot axis 46. A slide 54, which also projects downward, is guided on the rail profile 44 so as to be displaceable in the direction of arrow A. A carrier 50 is also mounted on the carriage 54 so as to be pivotable about a further pivot axis 52 running parallel to the pivot axis 46. The two carriers 50 are from the parallel to the rail profile 44 and aligned rest position, in which the free ends of the carrier 50 are directed towards each other, by 90 ° in a dash-dotted and indicated by 50 'pivotable position in which the carrier 50 is at right angles protrude from the rail profile 44. The mold parts 40 are fastened to the free ends of the carriers 50. When the carrier 50 is pivoted in the rest position and the carriage 54 is in the closed position, the mold parts 40 lie against one another, when the carriage 54 is in the open position, the mold parts 40 are spaced apart.

Bei auf den Giessmund 16 abgesetzter Kokille 41 (Fig. 1 links, Fig. 3) ist die Trennebene 56 zwischen den beiden Kokillenteilen 40 eine Vertikalebene und verläuft rechtwinklig zur Längserstreckung des Schienenprofils 44, welches beim Füllen der Kokille 41 bezüglich der Drehachse 30 in radialer Richtung verläuft.When the mold 41 is placed on the casting mouth 16 (FIG. 1, left, FIG. 3), the parting plane 56 between the two mold parts 40 is a vertical plane and extends at right angles to the longitudinal extent of the rail profile 44, which is radial in relation to the axis of rotation 30 when the mold 41 is filled Direction runs.

In den Trägern 50 ist je ein Ausstosselement 58 vorgesehen, um die gegossenen Teile bei voneinander beabstandeten Kokillenteile 40 aus diesen auszustossen.One ejection element 58 is provided in each of the carriers 50 in order to eject the cast parts from the mold parts 40 which are spaced apart from one another.

In der in den Figuren 1 und 2 gezeigten Schwenklage des Drehtisches 28 befindet sich die links dargestellte Tragvorrichtung 38 in Giesstellung oberhalb des Schmelzofens 10 und die andere Tragvorrichtung 38 oberhalb eines bezüglich der Drehachse 30 dem Schmelzofen 10 diametral gegenüberliegenden Schlichtbades 60. Dieses steht auf dem Giessereiboden 14.In the pivoting position of the rotary table 28 shown in FIGS. 1 and 2, the support device 38 shown on the left is in the pouring position above the melting furnace 10 and the other support device 38 is above a size bath 60 diametrically opposite the melting furnace 10 with respect to the axis of rotation 30. This is on the foundry floor 14.

Bezüglich des Schmelzofens 10 ist im Uhrzeigersinn U gesehen um 90° versetzt eine Entnahmestation 62 vorgesehen. Diese weist einen in Förderrichtung F angetriebenen Wegförderer 64 für die gegossenen, aus den Kokillenteilen 40 mittels der Ausstosselemente 58 ausgestossenen Teile auf. Der Entnahmestation 62 ist weiter eine Strahleinrichtung 66 zum Sandstrahlen der Kokillenteile 40 zugeordnet.With regard to the melting furnace 10, a removal station 62 is provided, as seen in a clockwise direction U, offset by 90 °. This has a conveyor 64 driven in the conveying direction F for the cast parts, which are ejected from the mold parts 40 by means of the ejection elements 58. A blasting device 66 for sandblasting the mold parts 40 is also assigned to the removal station 62.

Bezüglich der Drehachse 30 ist der Entnahmestation 62 diametral gegenüberliegend eine mit dem Pfeil 68 angedeutete Kern-Einlegestation vorgesehen.With respect to the axis of rotation 30, the removal station 62 is diametrically opposite a core insertion station indicated by the arrow 68.

Die Funktionsweise der in den Figuren 1 und 2 dargestellen Niederdruck-Kokillen-Giesseinrichtung wird nun anhand der Figuren 3 bis 7 näher erläutert. Dabei wird jeweils die eine der beiden Tragvorrichtungen 38 im Zuge eines Arbeitszyklus verfolgt. Die Arbeitszyklen der beiden Tragvorrichtungen 38 sind identisch aber um einen halben Zyklus gegeneinander verschoben.The mode of operation of the low-pressure mold casting device shown in FIGS. 1 and 2 will now be explained in more detail with reference to FIGS. 3 to 7. The one of the two carrying devices 38 is tracked in the course of a working cycle. The working cycles of the two carrying devices 38 are identical but shifted by half a cycle.

In der Figur 3 befindet sich die Tragvorrichtung 38 in Giessstellung oberhalb des Schmelzofens 10, wobei die aneinander anliegenden Kokillenteile 40 auf den Giessmund 16 des Steigrohres 18 abgesetzt sind. Unter kontinuierlichem Druckanstieg im Innern des Schmelzofens 10 wird die Giessmasse durch das Steigrohr 18 und den Giessmund 16 hindurch in die Kokille 41 gefördert. Nach dem Abschluss des Giessvorganges wird die Kokille 41 durch Anheben der Tragvorrichtung 38 vom Schmelzofen 10 abgehoben und durch Drehen des Drehtisches 28 in Pfeilrichtung U um 90° zur Entnahmestation 62 verbracht. Dort werden die Kokillenteile 40 durch Verschieben des Schlittens 54 von der Schliessstellung in die Offenstellung entlang dem Schienenprofil 44 voneinander getrennt, wie dies in der Figur 4 gezeigt ist. Durch Betätigen der Ausstosselemente 58 werden die gegossenen Teile aus den Kokillenteilen 40 ausgestossen, diese fallen auf den nur schematische angedeuteten Wegförderer 64.In FIG. 3, the carrying device 38 is in the pouring position above the melting furnace 10, the mold parts 40 lying against one another being deposited on the pouring mouth 16 of the riser pipe 18. With a continuous increase in pressure inside the melting furnace 10, the casting compound is conveyed through the riser pipe 18 and the pouring mouth 16 into the mold 41. After the casting process has been completed, the mold 41 is lifted from the melting furnace 10 by lifting the carrying device 38 and brought to the removal station 62 by rotating the turntable 28 in the direction of the arrow U by 90 °. There, the mold parts 40 are separated from one another by moving the slide 54 from the closed position into the open position along the rail profile 44, as shown in FIG. 4. By actuating the ejection elements 58, the cast parts are ejected from the mold parts 40, which fall onto the conveyor 64 which is only indicated schematically.

Nach einer weiteren Drehung in Pfeilrichtung U um 90° kommt die Tragvorrichtung 38 über das Schlichtbad 60 zu liegen (Figur 5) und wird abgesenkt. Dabei werden, bei voneinander beabstandeten Kokillenteilen 40, die Träger 50 um die Schwenkachse 52 in die Schwenklage 50′ verschwenkt, wodurch die Kokillenteile 40 in das Schlichtbad 60, unter Vermeidung der Luftpolsterbildung in den Ausnehmungen der Kokillenteile 40 eintauchen. In dieser Lage sind die jeweils der Trennebene 56 zugewandten Oberflächen der Kokillenteile 40 im Schlichtbad 60 nach unten gerichtet. Anschliessend wird die Tragvorrichtung 38 wieder angehoben und werden die Träger 50 in die miteinander fluchtende Ruhelage zurückverschwenkt.After a further rotation in the direction of arrow U by 90 °, the carrying device 38 comes to lie over the size bath 60 (FIG. 5) and is lowered. Here, with the mold parts 40 spaced apart from one another, the carriers 50 are pivoted about the pivot axis 52 into the pivot position 50 ', whereby the mold parts 40 are immersed in the size bath 60, avoiding the formation of air cushions in the recesses of the mold parts 40. In this position, the surfaces of the mold parts 40 facing the parting plane 56 in the sizing bath 60 are directed downward. The carrying device 38 is then raised again and the supports 50 are pivoted back into the rest position aligned with one another.

Durch erneutes Drehen des Drehtisches 28 um 90° gelangt die Tragvorrichtung 38 zur Kern-Einlegestation 68. Um ein sauberes und einfaches Einlegen der Kerne zu ermöglichen, wird das Schienenprofil 44 um 90° um die Schwenkachse 46 im Gegenuhrzeigersinn in eine vertikale Lage verschwenkt, wobei die nun horizontalen Kokillenteile 40 bezüglich der Drehachse 30, in radialer Richtung gesehen, ausserhalb des Schienenprofiles 40 liegen. Dies ermöglicht ein problemloses Einlegen der Kerne durch Bedienungspersonal oder einen nicht dargestellten Kern-Einlegeautomaten. Sobald der Kern in den unteren Kokillenteile 40 eingelgt ist, wird durch Verschieben des Schlittens 54 in Pfeilrichtung A in die Schliessstellung gegen oben die Kokille 41 geschlossen (Figur 6). Anschliessend wird das Schienenprofil 44 um die Schwenkachse 46 im Uhrzeigersinn um 90° verschwenkt. Nach einer weiteren Drehung in Pfeilrichtung U des Drehtisches um 90° und dem Absenken der Kokille 41 auf den Giessmund 16 des Schmelzofens 10 ist der Arbeitszyklus beendet.By turning the turntable 28 again by 90 °, the carrying device 38 reaches the core insertion station 68. In order to enable a clean and simple insertion of the cores, the rail profile 44 is pivoted 90 ° about the pivot axis 46 in a counterclockwise direction into a vertical position, whereby the now horizontal mold parts 40 with respect to the axis of rotation 30, seen in the radial direction, lie outside the rail profile 40. This enables problem-free insertion of the cores by operating personnel or an automatic core insertion machine (not shown). As soon as the core is inserted in the lower mold parts 40, the mold 41 is closed by moving the slide 54 in the direction of arrow A into the closed position towards the top (FIG. 6). The rail profile 44 is then pivoted 90 ° clockwise about the pivot axis 46. After a further rotation in the direction of arrow U of the turntable by 90 ° and the mold 41 being lowered onto the pouring mouth 16 of the melting furnace 10, the working cycle is ended.

Nach einer bestimmten Anzahl Arbeitszyklen ist es jeweils notwendig, dass die Kokillenteile 40 gereinigt werden. Zu diesem Zweck werden bei sich in der Entnahmestation 62 befindender Tragvorrichtung 38 die Träger 50 in die Schwenklage 50′ gebracht und das Schienenprofil 44 um die Schwenkachse im Gegenuhrzeigersinn um 90° verschwenkt (Fig. 7). Die Träger 50 erstrecken sich dabei bezüglich der Drehachse 30 in radialer Richtung, sodass die Kokillenteile 40 nun frei zugänglich mittels der Strahleinrichtung 66 gereinigt werden können. Nach dem Reinigen der Kokillenteile 40 werden das Schienenprofil 44 in die horizontale Lage und die Träger 50 in die Ruhelage zurückverschwenkt und die Tragvorrichtung 38 durch Drehen des Drehtisches 28 um 90° über das Schlichtbad 60 verbacht, wonach der bekannte Arbeitszyklus weiterläuft.After a certain number of working cycles, it is necessary that the mold parts 40 are cleaned. For this purpose, the carrier 50 is in the pivoting position when the carrying device 38 is located in the removal station 62 50 'brought and the rail profile 44 pivoted about the pivot axis counterclockwise by 90 ° (Fig. 7). The carriers 50 extend in the radial direction with respect to the axis of rotation 30, so that the mold parts 40 can now be cleaned freely accessible by means of the jet device 66. After the mold parts 40 have been cleaned, the rail profile 44 is pivoted back into the horizontal position and the carrier 50 is pivoted back into the rest position, and the carrying device 38 is covered by rotating the turntable 28 through 90 ° via the sizing bath 60, after which the known working cycle continues.

Es ist selbstverständlich auch denkbar, am Drehtisch 28 nur eine einzige Tragvorrichtung 38 vorzusehen. Dies reduziert aber die Leistung der Giesseinrichtung.It is of course also conceivable to provide only a single carrying device 38 on the turntable 28. However, this reduces the performance of the pouring device.

Es ist selbstverständlich auch denkbar, Arbeitstationen örtlich zusammenzulegen, weitere Arbeitstationen vorzusehen oder falls möglich gewisse Arbeitstationen wegzulassen. Auf jeden Fall ist es insbesondere bei einer ungeraden Anzahl Arbeitstationen vorteilhaft, den Schmelzofen 10 und alle Arbeitstationen um denselben Winkel um die Drehachse 30 herum gegeneinander versetzt anzuordnen, was die Steuerung für den Drehtisch 28 vereinfacht und, insbesondere bei zwei Tragvorrichtungen 38, ein gleichzeitiges Arbeiten an zwei Arbeitstationen bzw. an einer Arbeitstation und am Ofen ermöglicht. Es ist selbstverstänglich auch möglich, die Tragvorrichtung 38 oder Teile davon um weitere Achsen schwenkbar oder drehbar vorzusehen. Dies ist aber nicht zwingend nötig, können doch mittels der im Ausführungsbeispiel gezeigten Tragvorrichtung 38 sämtliche üblicherweise notwendigen Lagen der Kokillenteile 40 eingestellt werden.It is of course also conceivable to combine work stations locally, to provide further work stations or, if possible, to omit certain work stations. In any case, it is particularly advantageous in the case of an odd number of workstations to arrange the melting furnace 10 and all workstations offset from one another by the same angle around the axis of rotation 30, which simplifies the control for the turntable 28 and, in particular in the case of two carrying devices 38, enables simultaneous work at two work stations or at one work station and at the furnace. It is of course also possible to provide the carrying device 38 or parts thereof pivotable or rotatable about further axes. However, this is not absolutely necessary, since all the positions of the mold parts 40 that are usually required can be set by means of the carrying device 38 shown in the exemplary embodiment will.

Es ist einzusehen, dass der Ofen 10 und die Arbeitstationen entlang des Schwenkkreises der Tragvorrichtung 38 um die Drehachse 30 angeordnet sind. Die Bewegung aller Teile der Einrichtung erfolgt über bekannte elektrische, hydraulische und/oder pneumatische Antriebe, die von einer, vorzugsweise programmierbaren, elektrischen Steuerung angesteuert sind.It can be seen that the furnace 10 and the work stations are arranged along the swivel circle of the carrying device 38 about the axis of rotation 30. The movement of all parts of the device takes place via known electrical, hydraulic and / or pneumatic drives which are controlled by a preferably programmable electrical control.

Claims (12)

  1. A low pressure die casting apparatus with a furnace (10) and a carrier device (38) displaceable in the casting position in the vertical direction for positioning on the casting opening (16) of the furnace (10) the empty mould parts (48) by lowering them, which parts are carried by the carrier device (38) and abut on each other, and for lifting off the filled mould parts (40) from the furnace (10) by raising the carrier device (38) that can be pivoted from the casting position into a working position and back into the casting position round a vertical pivot axis(30) extending at the side of the casting opening (16), and with carrying members (54, 48) arranged on the carrier device (38), displaceable relative to each other from a closed position into an open position and back, on which members the mould parts (40) are arranged which abut on each other in the closed position, characterized by a portal-shaped supporting structure (20) with supports (22, 22′) arranged outside the pivoting range of the carrier device (38), and with a revolving table (28) mounted on a cross member (26) and rotatable round the pivot axis(30), on which table the carrier device (38) is carried for displacement in the vertical direction.
  2. A casting apparatus according to claim 1, characterized in that the carrier device (38) can be brought in the same direction of rotation (U) from the casting position into the working position and back into the casting position.
  3. A casting apparatus according to claim 2, characterized in that provision is made for several working positions which are, including the casting position, offset with respect to each other substantially by the same angles of rotation relative to the pivot axis (30), and that to the working positions there are assigned working stations (58, 62, 68) which are spaced in the radial direction substantially at the same distance from the pivot axis (30) as the furnace (10).
  4. A casting apparatus according to claim 3, characterized in that the furnace (10) is followed by a removal station (68) and is preceded by a core insertion station (68).
  5. A casting apparatus according to claim 4, characterized in that, between the removal station (62) and the core insertion station (68), provision is made for a blacking bath (60) for the mould parts (40).
  6. A casting apparatus according to one of claims 1 to 5, characterized in that two carrier devices (38) radially opposed to each other with respect to the pivot axis(30) are arranged on the revolving table (28), and that provision is preferably made for an odd number of working stations (58, 62, 68) so as to pivot the two carrier devices (38) simultaneously to two working stations (62, 68) or respectively one working station (60) and to the furnace (10).
  7. A casting apparatus according to one of claims 1 to 6, characterized in that on the carrier device (38), provision is made for an ejection arrangement (58) for ejecting the cast parts from the mutually interspaced mould parts (40).
  8. A casting apparatus according to one of claims 1 to 7, characterized in that the carrier device (38) can be pivoted round a pivot pin (46) extending substantially in a horizontal direction.
  9. A casting apparatus according to claim 8, characterized in that the carrier device (38) has a straight guide track (44) for at least one of the carrying members (48, 54) which, when the carrier device (38) is situated in a horizontal direction, extends in a substantially radial direction with respect to the pivot axis(30).
  10. A casting apparatus according to claim 9, characterized in that the substantially horizontal pivot pin (46) of the carrier device (38) extends at right angles to the guide track (44).
  11. A casting apparatus according to claim 9 or 10, characterized in that the carrying members (48, 54) have one pivotably mounted support (50) each for the mould parts (40), the pivot pins (52) of which supports extend at right angles to the guide track (44) and preferably in a horizontal direction.
  12. A casting apparatus according to claim 1, characterized in that the supporting structure (20) and the furnace (10) or the stands (12) supporting them, bear on the foundry floor (14).
EP90108862A 1989-05-19 1990-05-11 Low pressure die casting apparatus Expired - Lifetime EP0398168B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90108862T ATE85919T1 (en) 1989-05-19 1990-05-11 LOW-PRESSURE MOLD CASTING EQUIPMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH190989 1989-05-19
CH1909/89 1989-05-19

Publications (2)

Publication Number Publication Date
EP0398168A1 EP0398168A1 (en) 1990-11-22
EP0398168B1 true EP0398168B1 (en) 1993-02-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90108862A Expired - Lifetime EP0398168B1 (en) 1989-05-19 1990-05-11 Low pressure die casting apparatus

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EP (1) EP0398168B1 (en)
JP (1) JP2961618B2 (en)
AT (1) ATE85919T1 (en)
DE (1) DE59000911D1 (en)
ES (1) ES2038018T3 (en)

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Publication number Priority date Publication date Assignee Title
CN103722152A (en) * 2014-01-02 2014-04-16 上海理工大学 Method for improving low-pressure casting efficiency through mould transferring

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DE19613668C1 (en) * 1996-04-04 1997-05-28 Gustav Ohnsmann Pressure die casting apparatus
CH690356A5 (en) * 1996-04-19 2000-08-15 Kwc Ag High productivity low pressure die casting installation has work stations located along an overhead linear manipulator reciprocation path
IT1283090B1 (en) * 1996-06-04 1998-04-07 Imr Srl LOW PRESSURE SHELL CASTING PLANT, WITH INCREASED POTENTIALITY
CH692222A5 (en) * 1996-08-23 2002-03-28 Kwc Ag Low-pressure die casting.
TW394715B (en) * 1998-05-20 2000-06-21 Kwc Ag Low pressure chill casting apparatus
DE19834553A1 (en) * 1998-07-31 2000-02-03 Georg Fischer Disa Ag Method and device for increasing the casting of light metal
EP1057562A1 (en) * 1999-06-04 2000-12-06 Fata Aluminium Division of Fata Group S.p.A. Low pressure casting machine
ES2250264T3 (en) * 2001-06-18 2006-04-16 Kwc Ag COLADA INSTALLATION IN LOW PRESSURE COQUILLA AND COQUILLA FOR THE SAME.
EP1270115B1 (en) * 2001-06-18 2008-08-06 Kwc Ag Low pressure die-casting plant and method for operating the same
US8783331B2 (en) 2009-07-07 2014-07-22 Ksm Castings Group Gmbh System and method for casting
DE102013108127A1 (en) 2012-08-23 2014-02-27 Ksm Castings Group Gmbh Al-cast alloy
DE102012109707B3 (en) * 2012-10-11 2014-03-06 Reis Group Holding Gmbh & Co. Kg Casting device, useful as a robot for filling mold with melt, comprises support frame having two spaced apart frame members having load rollers, support for mold, and electric drive having wheel, where frame members start traction unit
BR112015016608A2 (en) 2013-02-06 2017-07-11 Ksm Castings Group Gmbh al cast alloy
IT201900007824A1 (en) * 2019-06-03 2020-12-03 Imr Engineering & Tech S R L PERFECTED EQUIPMENT FOR LOW PRESSURE CASTING OF METALLIC PRODUCTS
CN116618614B (en) * 2023-07-25 2023-10-13 厦门鼎铸智能设备有限公司 Low-pressure casting machine

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CH637856A5 (en) * 1979-03-29 1983-08-31 Karrer Weber & Cie Ag LOW-PRESSURE CHILLING MOLDING MACHINE FOR NON-FERROUS METALS.
DE3168945D1 (en) * 1980-12-23 1985-03-28 Egro Ag Apparatus and process for low-pressure casting

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Publication number Priority date Publication date Assignee Title
CN103722152A (en) * 2014-01-02 2014-04-16 上海理工大学 Method for improving low-pressure casting efficiency through mould transferring

Also Published As

Publication number Publication date
ES2038018T3 (en) 1993-07-01
EP0398168A1 (en) 1990-11-22
JP2961618B2 (en) 1999-10-12
ATE85919T1 (en) 1993-03-15
JPH035059A (en) 1991-01-10
DE59000911D1 (en) 1993-04-01

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