EP0611617B1 - Moulding machine - Google Patents

Moulding machine Download PDF

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Publication number
EP0611617B1
EP0611617B1 EP93119833A EP93119833A EP0611617B1 EP 0611617 B1 EP0611617 B1 EP 0611617B1 EP 93119833 A EP93119833 A EP 93119833A EP 93119833 A EP93119833 A EP 93119833A EP 0611617 B1 EP0611617 B1 EP 0611617B1
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EP
European Patent Office
Prior art keywords
moulding
station
machine according
box
pattern
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
EP93119833A
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German (de)
French (fr)
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EP0611617A1 (en
Inventor
Siegmund Becker
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Heinrich Wagner Sinto Maschinenfabrik GmbH
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Heinrich Wagner Sinto Maschinenfabrik GmbH
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Publication of EP0611617A1 publication Critical patent/EP0611617A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C11/00Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/02Machines in which the moulds are moved during a cycle of successive operations
    • B22C11/04Machines in which the moulds are moved during a cycle of successive operations by a horizontal rotary table or carrier

Definitions

  • the invention relates to a molding machine a transport device for feeding an empty one Shaped box and for the removal of a finished shaped box with a turntable rotatable around a central column for the cyclical transport of model plates and Molding boxes, with the turntable provided with four stations is on which a model plate is arranged on which a molding box can be placed and each station by rotating 90 ° in cycles one after the other into a sand filling station, into a pre-compression station, in a compression station and in a model change station can be transferred.
  • Such Device is known from DE-C-1058 701.
  • a disadvantage of this known device is in that considerable effort is required to to pass the molding boxes through the molding machine. So it is necessary to own drives for the introduction of a Molding box and for pulling off a molding box to use from the molding machine.
  • the invention has for its object a molding machine of the type mentioned at the beginning, which with simple construction and simple, more reliable Applicability integrated in a straight line can be and in which both the feed an empty molding box as well as the removal a finished molding box with little technical equipment Effort.
  • the molding machine according to the invention is characterized by a number of significant benefits. Because the turntable is provided with four processing stations four different work steps at the same time be performed, which significantly increases the cycle time can be reduced. Using the four-station turntable can thus two pairs of model plates, d. H. two models for top boxes and two models for bottom boxes processed in sync with each other and simultaneously that the finished mold boxes alternate form an upper box or a lower box.
  • a horizontally reversing spacer is arranged, which is in a space between an empty molding box and the one in the compression station existing molding box can be introduced and is movable with the mold boxes. In this way it is possible to insert a empty mold box also the finished mold box to slide out of the machine. Additional Driving means in the area of the molding machine are thus not mandatory.
  • the sand filling station is preferably with feed means for feeding a molding box onto a model plate, with means for placing a filling frame on the molding box and with means for lifting the model plate, of the molding box and the filling frame under provide a sand dosing device. In this way assembling the model plate, the mold frame and the filling frame as well as the subsequent filling automate the sand.
  • the ventilation hood is preferably designed so that a gas pressure surge for Pre-compaction of the sand passed onto the molding box becomes.
  • Compressed air for example, can be used as the gas , but it is also possible to use any other To use gas compositions.
  • the compression station is according to the invention by means for lifting the model plate, the molding box and the Filling frame in a compression unit and with means provided for lifting the filling frame.
  • the means to Putting on and lifting off the filling frame are preferred in the form of a 180 ° around the center column rotatable swivel frame.
  • the swing frame is used after passing through the compression station remove the filling frame and this directly the To feed sand filling station.
  • Means according to the invention are in the model change station arranged to remove a model plate from the turntable, so that with the help of the model change station taking one without interrupting the work cycle Model plate, or the insertion of another model plate is made possible.
  • roller conveyor elements are arranged, which optionally in Can be brought into engagement with the molded boxes.
  • the spacer element is a Length of two molded boxes, because then the pitch of the individual mold boxes not through the molding machine is changed.
  • the spacer is preferably in a central, bearing element arranged in the area of the center column stored, the spacer and / or its Bearing element optionally in the transport path of the molding boxes can be introduced or moved out of this. This prevents the spacer the movement of the mold boxes, especially when Raising or lowering in the compression unit or disturb the sand dosing device.
  • the molding machine shown comprises a frame 18, which four vertical columns as well as upper and lower cross members has, so that there is a rigid, self-contained Frame results.
  • a vertical one Center column 2 arranged around which in the lower area by means of a drive 4, a turntable 3 and in the upper area a swivel frame 6 can be rotated by means of a drive 7 are.
  • the turntable 3 can be swiveled by 90 ° in cycles, while the swivel frame 6 cyclically by 180 ° is pivoted.
  • the invention includes A sand filling station A, a pre-compression station B, a compression station C and a model change station D.
  • the top view of Fig. I further shows that the molding machine is integrated in a linear transport path 23, with the help of which empty mold boxes 10 are supplied and finished Mold boxes 10c are discharged.
  • the arrow indicates the direction of flow through the molding machine again.
  • the transport track 23 is designed, for example, in the form of a roller conveyor.
  • roller conveyor elements 11 provided, which laterally by means of Hydraulic cylinders 12 are slidable and in engagement with can be brought to the mold boxes. In the same way the roller conveyor elements 11 can be withdrawn by to enable the mold boxes to be raised or lowered.
  • the sand filling station A which after an inlet of an empty one Molding box 10 represents the first processing station, is structured as follows: In the lower area of the sand filling station 10a, a lifting table 1a is arranged, by means of which a model plate 5a raised from the turntable 3 and be created from the bottom against the molding box 10 can. By further lifting the lifting table 1 a Molding box 10 against the bottom of a filling frame 8 in Bring plant, which is mounted on the swivel frame 6 is.
  • the swivel frame 6 is with laterally movable support cams 9 provided, which can be withdrawn, to release the fill frame 8.
  • the pre-compression station B includes an overhead ventilation hood 19, which by lifting a lifting table 22nd (see Fig. III) can be placed on the filling frame 8. By Opening the valve 20, which is the connection between the Pressure accumulator 24 and the ventilation hood 19 can now a gas pressure surge can be applied to the molding sand. After the lifting table 22 has been lowered, the model plate rests 5b in turn on the turntable 3 so that it continues to cycle can be.
  • the compression station C is with an overhead compression unit 17 equipped, which can be operated hydraulically is and corresponds in its structure to the state of the art.
  • By lifting the lifting table 1b (see Fig. II) it is possible to get the unit from the model plate 5c, the molding box 10c and the filling frame 8b to the extent that these are applied against the compression unit 17.
  • the support cams 9 from the Swing frame 6 extended to hold the filling frame 8b.
  • the roller conveyor elements 11 extend, see above that supported with a further lowering of the molding box 10b becomes.
  • the lifting table 1b can be in its lowest End position to be moved to the model plate 5c Turntable 3 to lay. This is now for another one Clocking process free.
  • the model change station D also includes a lifting table 21, with the help of which a model plate 5d from the turntable 3 excavated, or another model plate can be used can.
  • a lifting table 21 with the help of which a model plate 5d from the turntable 3 excavated, or another model plate can be used can.
  • means of transport and handling provided, which are not shown in the figures to remove the model plate or to another model plate to forward.
  • a bearing element 14 is arranged, which is reversible and horizontally displaceable a rod-shaped spacer 13 stores.
  • a drive 25 is provided to the spacer 13 to push back into its starting position.
  • the bearing element 14 is attached to a pivot lever 26, which about an axis 27 by means of a hydraulic cylinder 15 is pivotable (see Fig. III). So it is possible that To pivot in the spacer element between two adjacent molded boxes 10, or to remove from the path of the mold boxes 10.
  • a molding box 10a and a filling frame 8a which lie on the model plate 5a.
  • a fully compressed mold in a molding box 10c which is supported on the roller conveyor elements 11b.
  • the model plate 5c has already been placed on the turntable 3, the lifting table 1b is located, as is the lifting table 1a in the sand filling station A in its lowest position.
  • the spacer elements 13 are pivoted in and are located between the mold boxes 10 and 10b.
  • the lifting table 22 is already lowered, so that the entire arrangement on the turntable 3 lies.
  • a model 5d is located in the model change station D, that rolled out after the lifting of the lifting table 21 could be. In the arrangement shown is the lifting table 21 but also lowered to its lowest position.
  • the Molding box 10 is on the transport path 23 in the sand filling station A inserted, this is done by the spacer 13 pushing out the finished molding box 10b.
  • the turntable 3 is pivoted through 90 °, hereby the model plate 5a with the molding box 10a and transferred the filling frame 8a to the pre-compression station B, while the model plate 5b with the molding box 10d and the filling frame 8c in the compression station C and the Model plate 5c in the model change station D and the model 5d be transferred to the sand filling station A.
  • the swivel frame 6 is rotated by 180 °, so that the filling frame 8b is brought into the sand filling station A.
  • the lifting table 1a moves up, takes over the model plate 5d, the molding box 10 and the filling frame 8b, lifts this under the sand dosing device 16, through which the required amount of sand is filled. Meanwhile drive the roller conveyor slats 11a and the support cams 9b back so that the lifting table 1a the model plate 5d with the Lower the molding box 10 and the filling frame 8b into the turntable 3 can. As soon as the lifting table 1a reaches its lower end position has reached, the spacer elements 13 move into their starting position back.
  • the lifting table 1b moves up, lifts the model plate 5b together with the molding box 10d and the filling frame 8c under the compression unit 17, which compresses the molding sand.
  • the support cams 9a and the roller conveyor elements 11b drive the support cams 9a and the roller conveyor elements 11b before, so that when lowering the lifting table 1b the filling frame 8c on the cam elements 9a and the molding box 10d the roller conveyor elements 11b are stored.
  • the model plate 5b is lowered into the turntable 3.
  • the lifting table 22 lifts the model plate 5a with the molding box 10a and the filling frame 8a and the ventilation hood 19, whereby the molding sand is pre-compressed by an air stream becomes. Now the lifting table 22 sets the model 5a with the Molding box 10a and the filling frame 8a back in the turntable 3 from.
  • the lifting table 21 of the model change station D only moves up, if a model is to be removed from the turntable 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)

Description

Die Erfindung bezieht sich auf eine Formmaschine mit einer Transporteinrichtung zur Zuführung eines leeren Formkastens und zur Abführung eines fertigen Formkastens mit einem um eine Mittelsäule drehbaren Drehtisch zum taktweisen Transport von Modellplatten und Formkästen, wobei der Drehtisch mit vier Stationen versehen ist, auf welchen jeweils eine Modellplatte angeordnet ist, auf welcher ein Formkasten aufsetzbar ist, und jede Station durch taktweise Drehung um 90 ° nacheinander in eine Sandfüllstation, in eine Vorverdichtungsstation, in eine Verdichtungsstation und in eine Modellwechselstation überführbar ist. Eine derartige Vorrichtung ist aus der DE-C-1058 701 bekannt.The invention relates to a molding machine a transport device for feeding an empty one Shaped box and for the removal of a finished shaped box with a turntable rotatable around a central column for the cyclical transport of model plates and Molding boxes, with the turntable provided with four stations is on which a model plate is arranged on which a molding box can be placed and each station by rotating 90 ° in cycles one after the other into a sand filling station, into a pre-compression station, in a compression station and in a model change station can be transferred. Such Device is known from DE-C-1058 701.

Ein Nachteil dieser bekannten Vorrichtung besteht darin, daß ein erheblicher Aufwand erforderlich ist, um die Formkästen durch die Formmaschine durchzuleiten. So ist es nötig, eigene Antriebe für das Einführen eines Formkastens sowie für das Abziehen eines Formkastens aus der Formmaschine zu verwenden.A disadvantage of this known device is in that considerable effort is required to to pass the molding boxes through the molding machine. So it is necessary to own drives for the introduction of a Molding box and for pulling off a molding box to use from the molding machine.

Der Erfindung liegt die Aufgabe zugrunde, eine Formmaschine der eingangs genannten Art zu schaffen, welche bei einfachem Aufbau und einfacher, betriebssicherer Anwendbarkeit in eine gerade verlaufende Formlinie integriert werden kann und bei welcher sowohl die Zuführung eines leeren Formkastens als auch der Abtransport eines fertigen Formkastens mit geringem apparatetechnischem Aufwand erfolgen.The invention has for its object a molding machine of the type mentioned at the beginning, which with simple construction and simple, more reliable Applicability integrated in a straight line can be and in which both the feed an empty molding box as well as the removal a finished molding box with little technical equipment Effort.

Erfindungsgemäß wird die Aufgabe mit den Merkmalen des Anspruches 1 gelöst.According to the invention the task with the features of Claim 1 solved.

Die erfindungsgemäße Formmaschine zeichnet sich durch eine Reihe erheblicher Vorteile aus. Da der Drehtisch mit vier Bearbeitungsstationen versehen ist, können vier unterschiedliche Arbeitsschritte gleichzeitig durchgeführt werden, wodurch sich die Taktzeit erheblich reduzieren läßt. Mittels des Vier-Stationen-Drehtisches können somit zwei Modellplattenpaare, d. h. zwei Modelle für Oberkästen und zwei Modelle für Unterkästen synchron zueinander und gleichzeitig so bearbeitet werden, daß die fertigen Formkästen jeweils alternierend einen Oberkasten oder einen Unterkasten bilden. Für den Transport der einzelnen Formkästen in gerader Linie durch die Formmaschine, ist im Bereich des Drehtisches ein horizontal reversierend gelagertes Distanzelement angeordnet ist, welches in einem Zwischenraum zwischen einem leeren Formkasten und dem in der Verdichtungsstation befindlichen Formkasten einbringbar und mit den Formkästen bewegbar ist. Auf diese Weise ist es möglich, während eines Einschiebvorgangs eines leeren Formkastens zugleich den fertiggestellten Formkasten aus der Maschine herauszuschieben. Zusätzliche Antriebsmittel im Bereich der Formmaschine sind somit nicht erforderlich.The molding machine according to the invention is characterized by a number of significant benefits. Because the turntable is provided with four processing stations four different work steps at the same time be performed, which significantly increases the cycle time can be reduced. Using the four-station turntable can thus two pairs of model plates, d. H. two models for top boxes and two models for bottom boxes processed in sync with each other and simultaneously that the finished mold boxes alternate form an upper box or a lower box. For the transport of the individual molded boxes in a straight line Line through the molding machine is in the area of the turntable a horizontally reversing spacer is arranged, which is in a space between an empty molding box and the one in the compression station existing molding box can be introduced and is movable with the mold boxes. In this way it is possible to insert a empty mold box also the finished mold box to slide out of the machine. Additional Driving means in the area of the molding machine are thus not mandatory.

Die Sandfüllstation ist bevorzugterweise mit Zuführmitteln zum Zuführen eines Formkastens auf eine Modellplatte, mit Mitteln zum Aufsetzen eines Füllrahmens auf den Formkasten und mit Mitteln zum Anheben der Modellplatte, des Formkastens und des Füllrahmens unter ein Sanddosiergerät versehen. Auf diese Weise läßt sich das Zusammensetzen der Modellplatte, des Formrahmens und des Füllrahmens sowie das nachfolgende Einfüllen des Sandes automatisieren.The sand filling station is preferably with feed means for feeding a molding box onto a model plate, with means for placing a filling frame on the molding box and with means for lifting the model plate, of the molding box and the filling frame under provide a sand dosing device. In this way assembling the model plate, the mold frame and the filling frame as well as the subsequent filling automate the sand.

In gleicher Weise ist es günstig, wenn die Vorverdichtungsstation mit Mitteln zum Anheben der Modellplatte, des Formkastens und des Füllrahmens unter eine Belüftungshaube versehen ist. Die Belüftungshaube ist bevorzugterweise so ausgebildet, daß ein Gas-Druckstoß zur Vorverdichtung des Sandes auf den Formkasten geleitet wird. Als Gas kann beispielsweise Druckluft verwendet werden, es ist jedoch auch möglich, beliebige andere Gaszusammensetzungen zu verwenden.In the same way, it is favorable if the pre-compression station with means for lifting the model plate, of the molding box and the filling frame under a ventilation hood is provided. The ventilation hood is preferably designed so that a gas pressure surge for Pre-compaction of the sand passed onto the molding box becomes. Compressed air, for example, can be used as the gas , but it is also possible to use any other To use gas compositions.

Die Verdichtungsstation ist erfindungsgemäß mit Mitteln zum Anheben der Modellplatte, des Formkastens und des Füllrahmens in eine Verdichtungseinheit und mit Mitteln zum Abheben des Füllrahmens versehen. Die Mittel zum Aufsetzen und Abheben des Füllrahmens sind bevorzugterweise in Form eines um die Mittelsäule jeweils um 180 ° drehbaren Schwenkrahmens ausgebildet. Der Schwenkrahmen dient dazu, nach Durchlauf durch die Verdichtungsstation den Füllrahmen zu entnehmen und diesen direkt der Sandfüllstation zuzuleiten. The compression station is according to the invention by means for lifting the model plate, the molding box and the Filling frame in a compression unit and with means provided for lifting the filling frame. The means to Putting on and lifting off the filling frame are preferred in the form of a 180 ° around the center column rotatable swivel frame. The swing frame is used after passing through the compression station remove the filling frame and this directly the To feed sand filling station.

In der Modellwechselstation sind erfindungsgemäß Mittel zum Entnehmen einer Modellplatte von dem Drehtisch angeordnet, so daß mit Hilfe der Modellwechselstation ohne Unterbrechung des Arbeitstaktes das Entnehmen einer Modellplatte, bzw. das Einsetzen einer anderen Modellplatte ermöglicht wird.Means according to the invention are in the model change station arranged to remove a model plate from the turntable, so that with the help of the model change station taking one without interrupting the work cycle Model plate, or the insertion of another model plate is made possible.

Im Zulaufbereich und im Auslaufbereich der Formkästen sind Rollenbahnelemente angeordnet, welche wahlweise in Eingriff mit den Formkästen bringbar sind.In the inlet area and in the outlet area of the molding boxes roller conveyor elements are arranged, which optionally in Can be brought into engagement with the molded boxes.

Weiterhin ist es günstig, wenn das Distanzelement eine Länge von zwei Formkästen aufweist, da dann der Taktabstand der einzelnen Formkästen nicht durch die Formmaschine verändert wird.Furthermore, it is advantageous if the spacer element is a Length of two molded boxes, because then the pitch of the individual mold boxes not through the molding machine is changed.

Das Distanzelement ist bevorzugterweise in einem mittigen, im Bereich der Mittelsäule angeordneten Lagerelement gelagert, wobei das Distanzelement und/oder dessen Lagerelement wahlweise in die Transportbahn der Formkästen einbringbar, bzw. aus dieser herausbewegbar ist. Auf diese Weise wird verhindert, daß das Distanzelement den Bewegungsablauf der Formkästen, insbesondere beim Anheben oder Absenken in die Verdichtungseinheit oder das Sanddosiergerät stören.The spacer is preferably in a central, bearing element arranged in the area of the center column stored, the spacer and / or its Bearing element optionally in the transport path of the molding boxes can be introduced or moved out of this. This prevents the spacer the movement of the mold boxes, especially when Raising or lowering in the compression unit or disturb the sand dosing device.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels in Verbindung mit der Zeichnung beschrieben. Dabei zeigt:

Fig. I
eine Draufsicht auf ein Ausführungsbeispiel einer erfindungsgemäßen Formmaschine,
Fig. II
eine Seitenansicht der in Fig. I gezeigten Formmaschine, und
Fig. III
eine stirnseitige Ansicht auf die in Fig. II rechte Seite der Formmaschine mit Blickrichtung von links.
The invention is described below using an exemplary embodiment in conjunction with the drawing. It shows:
Fig. I
2 shows a plan view of an exemplary embodiment of a molding machine according to the invention,
Fig. II
a side view of the molding machine shown in Fig. I, and
Fig. III
an end view of the right side of the molding machine in Fig. II looking from the left.

Die gezeigte Formmaschine umfaßt ein Gestell 18, welches vier vertikale Säulen sowie obere und untere Querträger aufweist, so daß sich ein starres, in sich geschlossenes Gestell ergibt. In der Mitte des Gestells ist eine vertikale Mittelsäule 2 angeordnet, um welche im unteren Bereich mittels eines Antriebs 4 ein Drehtisch 3 und im oberen Bereich mittels eines Antriebs 7 ein Schwenkrahmen 6 drehbar sind. Der Drehtisch 3 ist taktweise jeweils um 90 ° verschwenkbar, während der Schwenkrahmen 6 taktweise um 180 ° verschwenkt wird.The molding machine shown comprises a frame 18, which four vertical columns as well as upper and lower cross members has, so that there is a rigid, self-contained Frame results. In the middle of the frame is a vertical one Center column 2 arranged around which in the lower area by means of a drive 4, a turntable 3 and in the upper area a swivel frame 6 can be rotated by means of a drive 7 are. The turntable 3 can be swiveled by 90 ° in cycles, while the swivel frame 6 cyclically by 180 ° is pivoted.

Wie die Draufsicht der Fig. I zeigt, umfaßt die erfindungsgemäße Formmaschine eine Sandfüllstation A, eine Vorverdichtungsstation B, eine Verdichtungsstation C und eine Modellwechselstation D.As the top view of Fig. I shows, the invention includes A sand filling station A, a pre-compression station B, a compression station C and a model change station D.

Die Draufsicht der Fig. I zeigt weiterhin, daß die Formmaschine in eine geradlinige Transportbahn 23 integriert ist, mit Hilfe derer leere Formkästen 10 zugeführt und fertige Formkästen 10c abgeführt werden. Der Pfeil gibt die Durchlaufrichtung durch die Formmaschine wieder. Die Transportbahn 23 ist beispielsweise in Form einer Rollenbahn ausgebildet. Um den jeweiligen Formkasten 10 in die Sandfüllstation A einschieben, bzw. den fertigen Formkasten 10b aus der Verdichtungsstation C ausschieben zu können, sind Rollenbahnelemente 11 vorgesehen, welche seitlich mittels Hydraulikzylindern 12 verschiebbar sind und in Eingriff mit den Formkästen gebracht werden können. In gleicher Weise können die Rollenbahnelemente 11 zurückgezogen werden um ein Anheben oder Absenken der Formkästen zu ermöglichen.The top view of Fig. I further shows that the molding machine is integrated in a linear transport path 23, with the help of which empty mold boxes 10 are supplied and finished Mold boxes 10c are discharged. The arrow indicates the direction of flow through the molding machine again. The transport track 23 is designed, for example, in the form of a roller conveyor. Around the respective molding box 10 in the sand filling station Insert A or the finished molding box 10b Being able to push out the compression station C are roller conveyor elements 11 provided, which laterally by means of Hydraulic cylinders 12 are slidable and in engagement with can be brought to the mold boxes. In the same way the roller conveyor elements 11 can be withdrawn by to enable the mold boxes to be raised or lowered.

Die Sandfüllstation A, welche nach einem Einlauf eines leeren Formkastens 10 die erste Bearbeitungsstation darstellt, ist wie folgt aufgebaut: Im unteren Bereich der Sandfüllstation 10a ist ein Hubtisch 1a angeordnet, mit Hilfe dessen eine Modellplatte 5a von dem Drehtisch 3 angehoben und von der Unterseite gegen den Formkasten 10 angelegt werden kann. Durch weiteres Anheben des Hubtisches 1a wird der Formkasten 10 gegen die Unterseite eines Füllrahmens 8 in Anlage gebracht, welcher an dem Schwenkrahmen 6 gelagert ist. Der Schwenkrahmen 6 ist mit seitlich verfahrbaren Auflagenocken 9 versehen, welche zurückgezogen werden können, um den Füllrahmen 8 freizugeben. Anschließend wird die Kombination aus Modellplatte, Formkasten und Füllrahmen weiter angehoben und gegen die Unterseite eines Sanddosiergerätes 16 angelegt. Das Sanddosiergerät 16 ist in üblicher Weise ausgebildet und aus dem Stand der Technik bekannt. Nunmehr ist es möglich, Formsand in den Formkasten 10 einzufüllen. Nach Abschluß des Füllvorganges wird der Hubtisch 1a in seine unterste Lage abgesenkt, so wie dies auf der linken Bildhälfte der Fig. II dargestellt ist. Hierdurch wird die Modellplatte 5a auf den Drehtisch 3 aufgelegt.The sand filling station A, which after an inlet of an empty one Molding box 10 represents the first processing station, is structured as follows: In the lower area of the sand filling station 10a, a lifting table 1a is arranged, by means of which a model plate 5a raised from the turntable 3 and be created from the bottom against the molding box 10 can. By further lifting the lifting table 1 a Molding box 10 against the bottom of a filling frame 8 in Bring plant, which is mounted on the swivel frame 6 is. The swivel frame 6 is with laterally movable support cams 9 provided, which can be withdrawn, to release the fill frame 8. Then the combination from model plate, molded box and filling frame raised and against the underside of a sand dosing device 16 created. The sand dosing device 16 is in the usual way trained and known from the prior art. Now it is possible to fill molding sand into the molding box 10. After completion of the filling process, the lifting table 1a in lowered its lowest layer, like this on the left Half of the image of Fig. II is shown. This will make the Model plate 5a placed on the turntable 3.

Die Vorverdichtungsstation B umfaßt eine obenliegende Belüftungshaube 19, welche durch Anheben eines Hubtisches 22 (sh. Fig. III) auf den Füllrahmen 8 auflegbar ist. Durch Öffnen des Ventils 20, das die Verbindung zwischen dem Druckspeicher 24 und der Belüftungshaube 19 herstellt, kann nunmehr ein Gas-Druckstoß auf den Formsand aufgebracht werden. Nach dem Absenken des Hubtisches 22 ruht die Modellplatte 5b wiederum auf dem Drehtisch 3, so daß dieser weitergetaktet werden kann. The pre-compression station B includes an overhead ventilation hood 19, which by lifting a lifting table 22nd (see Fig. III) can be placed on the filling frame 8. By Opening the valve 20, which is the connection between the Pressure accumulator 24 and the ventilation hood 19 can now a gas pressure surge can be applied to the molding sand. After the lifting table 22 has been lowered, the model plate rests 5b in turn on the turntable 3 so that it continues to cycle can be.

Die Verdichtungsstation C ist mit einer obenliegenden Verdichtungseinheit 17 ausgerüstet, welche hydraulisch betätigbar ist und in ihrem Aufbau dem Stand der Technik entspricht. Durch Anheben des Hubtisches 1b (sh. Fig. II) ist es möglich, die Einheit aus der Modellplatte 5c, dem Formkasten 10c und dem Füllrahmen 8b soweit anzuheben, daß diese gegen die Verdichtungseinheit 17 angelegt werden. Bei einem Absenken des Hubtisches 1b nach Beendigung des Verdichtungsvorganges werden die Auflagenocken 9 aus dem Schwenkrahmen 6 ausgefahren, um den Füllrahmen 8b zu halten. Gleichzeitig fahren die Rollenbahnelemente 11 aus, so daß bei einem weiteren Absenken der Formkasten 10b abgestützt wird. Nunmehr kann der Hubtisch 1b in seine unterste Endlage verfahren werden, um die Modellplatte 5c auf den Drehtisch 3 zu legen. Dieser ist nunmehr für einen weiteren Taktvorgang frei.The compression station C is with an overhead compression unit 17 equipped, which can be operated hydraulically is and corresponds in its structure to the state of the art. By lifting the lifting table 1b (see Fig. II) it is possible to get the unit from the model plate 5c, the molding box 10c and the filling frame 8b to the extent that these are applied against the compression unit 17. At a lowering of the lifting table 1b after the compression process has ended are the support cams 9 from the Swing frame 6 extended to hold the filling frame 8b. At the same time, the roller conveyor elements 11 extend, see above that supported with a further lowering of the molding box 10b becomes. Now the lifting table 1b can be in its lowest End position to be moved to the model plate 5c Turntable 3 to lay. This is now for another one Clocking process free.

Die Modellwechselstation D umfaßt ebenfalls einen Hubtisch 21, mit Hilfe dessen eine Modellplatte 5d aus dem Drehtisch 3 ausgehoben, bzw. eine andere Modellplatte eingesetzt werden kann. Zusätzlich sind Transport- und Handhabungsmittel vorgesehen, welche in den Fig. nicht dargestellt sind, um die Modellplatte abzuführen, bzw. um eine andere Modellplatte zuzuleiten.The model change station D also includes a lifting table 21, with the help of which a model plate 5d from the turntable 3 excavated, or another model plate can be used can. In addition there are means of transport and handling provided, which are not shown in the figures to remove the model plate or to another model plate to forward.

Wie die Fig. weiterhin zeigen, ist im Bereich der Mittelsäule 2 ein Lagerelement 14 angeordnet, welches reversierbar und horizontal verschiebbar ein stangenförmiges Distanzelement 13 lagert. Im Bereich des Lagerelements 14 ist weiterhin ein Antrieb 25 vorgesehen, um das Distanzelement 13 wieder in seine Ausgangslage zurückzuschieben. Das Lagerelement 14 ist an einem Schwenkhebel 26 befestigt, welcher um eine Achse 27 mittels eines Hydraulikzylinders 15 verschwenkbar ist (sh. Fig. III). Somit ist es möglich, das Distanzelement zwischen zwei benachbarte Formkästen 10 einzuschwenken, bzw. aus dem Weg der Formkästen 10 zu entfernen.As the figures also show, is in the area of the center column 2, a bearing element 14 is arranged, which is reversible and horizontally displaceable a rod-shaped spacer 13 stores. In the area of the bearing element 14 Furthermore, a drive 25 is provided to the spacer 13 to push back into its starting position. The bearing element 14 is attached to a pivot lever 26, which about an axis 27 by means of a hydraulic cylinder 15 is pivotable (see Fig. III). So it is possible that To pivot in the spacer element between two adjacent molded boxes 10, or to remove from the path of the mold boxes 10.

Im folgenden wird die Funktion der erfindungsgemäßen Formmaschine beschrieben:The following is the function of the molding machine according to the invention described:

In der Sandfüllstation A befinden sich, wie in Fig. II dargestellt, ein Formkasten 10a und ein Füllrahmen 8a, welche auf der Modellplatte 5a liegen. In dem in Fig. II gezeigten Zustand wurde bereits Sand durch das Sanddosiergerät 16 eingeführt. Gleichzeitig befindet sich in der Verdichtungsstation C unterhalb der pressenartigen Verdichtungseinheit 17 eine fertig verdichtete Form in einem Formkasten 10c, welcher auf den Rollenbahnelementen 11b lagert. Die Modellplatte 5c ist bereits auf den Drehtisch 3 abgelegt worden, der Hubtisch 1b befindet sich, ebenso wie der Hubtisch 1a in der Sandfüllstation A in seiner untersten Position. Der Füllrahmen 8b ruht auf den Auflagenocken 9b des Schwenkrahmens 6. Die Distanzelemente 13 sind eingeschwenkt und befinden sich zwischen den Formkästen 10 und 10b.In the sand filling station A, as shown in Fig. II, a molding box 10a and a filling frame 8a, which lie on the model plate 5a. In that shown in Fig. II Condition was already sand by the sand dosing device 16 introduced. At the same time is in the compression station C below the press-like compression unit 17 a fully compressed mold in a molding box 10c, which is supported on the roller conveyor elements 11b. The model plate 5c has already been placed on the turntable 3, the lifting table 1b is located, as is the lifting table 1a in the sand filling station A in its lowest position. Of the Filling frame 8b rests on the support cams 9b of the swivel frame 6. The spacer elements 13 are pivoted in and are located between the mold boxes 10 and 10b.

In der Vorverdichtungsstation B (sh. Fig. III) befindet sich ein Formkasten 10d mit einem Füllrahmen 8c auf einem Modell 5b, wobei der Sand durch die Belüftungshaube 19 bereits vorverdichtet wurde. Der Hubtisch 22 ist bereits abgesenkt, so daß die gesamte Anordnung auf dem Drehtisch 3 liegt.Located in the pre-compression station B (see Fig. III) a molding box 10d with a filling frame 8c on one Model 5b, with the sand through the ventilation hood 19 already was pre-compressed. The lifting table 22 is already lowered, so that the entire arrangement on the turntable 3 lies.

In der Modellwechselstation D befindet sich ein Modell 5d, das nach dem Hochfahren des Hubtisches 21 herausgerollt werden könnte. In der gezeigten Anordnung ist der Hubtisch 21 jedoch auch in seine unterste Stellung abgesenkt.A model 5d is located in the model change station D, that rolled out after the lifting of the lifting table 21 could be. In the arrangement shown is the lifting table 21 but also lowered to its lowest position.

Nach dem Weitertakten des Drehtisches 3 und des Schwenkrahmens 6 laufen folgende Arbeitsschritte gleichzeitig ab: Der Formkasten 10 wird auf der Transportbahn 23 in die Sandfüllstation A eingeschoben, hierdurch erfolgt durch das Distanzelement 13 ein Ausschieben des fertigen Formkastens 10b. Gleichzeitig wird der Drehtisch 3 um 90 ° verschwenkt, hierdurch wird die Modellplatte 5a mit dem Formkasten 10a und dem Füllrahmen 8a in die Vorverdichtungsstation B überführt, während die Modellplatte 5b mit dem Formkasten 10d und dem Füllrahmen 8c in die Verdichtungsstation C und die Modellplatte 5c in die Modellwechselstation D und das Modell 5d in die Sandfüllstation A überführt werden. Gleichzeitig wird der Schwenkrahmen 6 um 180 ° gedreht, so daß der Füllrahmen 8b in die Sandfüllstation A gebracht wird.After clocking the turntable 3 and the swivel frame 6 the following work steps run simultaneously: The Molding box 10 is on the transport path 23 in the sand filling station A inserted, this is done by the spacer 13 pushing out the finished molding box 10b. At the same time, the turntable 3 is pivoted through 90 °, hereby the model plate 5a with the molding box 10a and transferred the filling frame 8a to the pre-compression station B, while the model plate 5b with the molding box 10d and the filling frame 8c in the compression station C and the Model plate 5c in the model change station D and the model 5d be transferred to the sand filling station A. At the same time the swivel frame 6 is rotated by 180 °, so that the filling frame 8b is brought into the sand filling station A.

Nachfolgend werden gleichzeitig folgende Arbeitsschritte ausgeführt: Der Hubtisch 1a fährt hoch, übernimmt die Modellplatte 5d, den Formkasten 10 und den Füllrahmen 8b, hebt diese unter das Sanddosiergerät 16, durch welches die erforderliche Sandmenge eingefüllt wird. Während dessen fahren die Rollenbahnleisten 11a und die Auflagenocken 9b zurück, so daß der Hubtisch 1a die Modellplatte 5d mit dem Formkasten 10 und dem Füllrahmen 8b in den Drehtisch 3 absenken kann. Sobald der Hubtisch 1a seine untere Endlage erreicht hat, fahren die Distanzelemente 13 in ihre Ausgangslage zurück. Gleichzeitig fährt der Hubtisch 1b hoch, hebt die Modellplatte 5b zusammen mit dem Formkasten 10d und dem Füllrahmen 8c unter die Verdichtungseinheit 17, welche den Formsand verdichtet. Während dieses Vorganges fahren die Auflagenocken 9a und die Rollenbahnelemente 11b vor, so daß beim Absenken des Hubtisches 1b der Füllrahmen 8c auf den Nockenelementen 9a und der Formkasten 10d auf den Rollenbahnelementen 11b abgelegt werden. Die Modellplatte 5b wird in den Drehtisch 3 abgesenkt. Gleichzeitig hebt der Hubtisch 22 die Modellplatte 5a mit dem Formkasten 10a und dem Füllrahmen 8a und die Belüftungshaube 19, wodurch der Formsand durch einen Luftstrom vorverdichtet wird. Nunmehr setzt der Hubtisch 22 das Modell 5a mit dem Formkasten 10a und dem Füllrahmen 8a wieder in den Drehtisch 3 ab.The following are the following steps at the same time Executed: The lifting table 1a moves up, takes over the model plate 5d, the molding box 10 and the filling frame 8b, lifts this under the sand dosing device 16, through which the required amount of sand is filled. Meanwhile drive the roller conveyor slats 11a and the support cams 9b back so that the lifting table 1a the model plate 5d with the Lower the molding box 10 and the filling frame 8b into the turntable 3 can. As soon as the lifting table 1a reaches its lower end position has reached, the spacer elements 13 move into their starting position back. At the same time, the lifting table 1b moves up, lifts the model plate 5b together with the molding box 10d and the filling frame 8c under the compression unit 17, which compresses the molding sand. During this process drive the support cams 9a and the roller conveyor elements 11b before, so that when lowering the lifting table 1b the filling frame 8c on the cam elements 9a and the molding box 10d the roller conveyor elements 11b are stored. The model plate 5b is lowered into the turntable 3. At the same time the lifting table 22 lifts the model plate 5a with the molding box 10a and the filling frame 8a and the ventilation hood 19, whereby the molding sand is pre-compressed by an air stream becomes. Now the lifting table 22 sets the model 5a with the Molding box 10a and the filling frame 8a back in the turntable 3 from.

Der Hubtisch 21 der Modellwechselstation D fährt nur hoch, wenn ein Modell aus dem Drehtisch 3 entnommen werden soll.The lifting table 21 of the model change station D only moves up, if a model is to be removed from the turntable 3.

Nach Ablauf der oben genannten Arbeitsschritte ist nunmehr wiederum die Ausgangsposition erreicht, es folgt ein Schub der Formkästen 10 durch die Formlinie und eine Drehung des Drehtisches 3 um 90 °.After the above steps have been completed again reaches the starting position, followed by a push the mold boxes 10 through the shape line and a rotation of the Rotary table 3 by 90 °.

Claims (12)

  1. A moulding machine with a conveying device for supplying an empty moulding box (10) and for removing a finished moulding box (10c), having a turntable (3) rotatable around a central column (2), for the cyclic conveyance of pattern-plates (5a) and moulding boxes (10), where the turntable (3) is provided with four stations, a pattern-plate (5) being arranged on each one, upon which a moulding box (10) can be mounted, and each station being transferable in succession, by cyclic rotation around 90°, into a sand-filling station (A), into a pre-compaction station (B), into a compacting station (C) and into a pattern-changing station (D), characterised in that the empty moulding box (10) is delivered from one side and the finished moulding box (10c) is removed at an opposite side, and in that a horizontally reciprocally mounted spacing element (13) is arranged in the region of the turntable (3), which spacing element (13) can be introduced into an interspace between an empty moulding box (10) and the moulding box (10b) located at the compacting station (C), and can be moved with the moulding boxes (10, 10b).
  2. A moulding machine according to claim 1, characterised in that the sand-filling station (A) is provided with delivery means (11a) for delivering a moulding box (10) onto a pattern plate (5a), with means (6) for mounting a filling frame (8a) on the moulding box (10), and with means (1a) for raising the pattern-plate (5a), the moulding box (10) and the filling frame (8a) underneath a sand-dosing device (16).
  3. A moulding machine according to claim 1 or 2, characterised in that the pre-compaction station (B) is provided with means (22) for raising the pattern-plate (5b), the moulding box (10d) and the filling frame (8c) underneath a ventilation hood (19).
  4. A moulding machine according to claim 3, characterised in that the ventilation hood (19) is formed to apply a gas pressure impact for pre-compaction.
  5. A moulding machine according to any one of the claims 1 to 4, characterised in that the compacting station (C) is provided with means (1b) for raising the pattern-plate (5c), the moulding box (10b) and the filling frame (8b) into a compacting unit (17), and with means (6) for lifting the filling frame (8b).
  6. A moulding machine according to any one of the claims 2 to 5, characterised in that the means (6) for mounting and removing the filling frame (8) comprise a swivel-frame (6) rotatable around the central column (2) by 180° at a time.
  7. A moulding machine according to any one of the claims 1 to 6, characterised in that the pattern-changing station (D) comprises means (21) for removing a pattern-plate (5d) from the turntable (3).
  8. A moulding machine according to any one of the claims 1 to 7, characterised in that the means (1a, 1b, 21, 22) are each in the form of a lifting-table.
  9. A moulding machine according to any one of the claims 1 to 8, characterised in that roller track elements (11) for conveying the moulding boxes (10) are arranged in the region of the moulding machine.
  10. A moulding machine according to claim 9, characterised in that the roller track elements (11) are supported so as to be laterally movable, for the selective release of the moulding box (10).
  11. A moulding machine according to any one of the preceding claims, characterised in that the spacing element (13) has a length of two moulding boxes (10).
  12. A moulding machine according to any one of the preceding claims, characterised in that the spacing element (13) is supported in a central bearing element (14) arranged in the region of the central column (2), and in that the spacing element (13) and/or the bearing element (14) thereof can be set into the conveying track of the moulding boxes (10).
EP93119833A 1993-02-19 1993-12-09 Moulding machine Expired - Lifetime EP0611617B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4305129A DE4305129A1 (en) 1993-02-19 1993-02-19 Molding machine
DE4305129 1993-02-19

Publications (2)

Publication Number Publication Date
EP0611617A1 EP0611617A1 (en) 1994-08-24
EP0611617B1 true EP0611617B1 (en) 1998-08-12

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EP93119833A Expired - Lifetime EP0611617B1 (en) 1993-02-19 1993-12-09 Moulding machine

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EP (1) EP0611617B1 (en)
DE (2) DE4305129A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103801663B (en) * 2014-03-05 2015-12-02 孟昭贵 Multi-station rotary-disk Static Pressure Molding Machine and formative method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198015B (en) * 1952-07-21 1965-08-05 Buderus Eisenwerk Fully automatic rotary table molding machine for the production of sand molds for foundry purposes
DE1058701B (en) * 1955-08-24 1959-06-04 Badische Maschinenfabrik A G S Device for the automatic lifting of the molding box from the model plate and for the automatic extension of the molding box in automatic rotary table molding machines
DE2048749A1 (en) * 1970-10-03 1972-05-04 Feller, Kurt W , Zurich (Schweiz) Process for the production of Giessfor men in molding boxes on molding machines with meh eral workstations with model circulation separated from the molding box
CH637313A5 (en) * 1978-11-15 1983-07-29 Fischer Ag Georg DEVICE FOR HANDLING MODEL FACILITIES.
DE8817014U1 (en) * 1988-09-07 1991-11-21 Heinrich Wagner Sinto Maschinenfabrik Gmbh, 5928 Bad Laasphe, De

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DE59308870D1 (en) 1998-09-17
DE4305129A1 (en) 1994-08-25
EP0611617A1 (en) 1994-08-24

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