EP0327825A2 - Moulding machine - Google Patents

Moulding machine Download PDF

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Publication number
EP0327825A2
EP0327825A2 EP89100553A EP89100553A EP0327825A2 EP 0327825 A2 EP0327825 A2 EP 0327825A2 EP 89100553 A EP89100553 A EP 89100553A EP 89100553 A EP89100553 A EP 89100553A EP 0327825 A2 EP0327825 A2 EP 0327825A2
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EP
European Patent Office
Prior art keywords
sand
box
molding
molding machine
mold
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Granted
Application number
EP89100553A
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German (de)
French (fr)
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EP0327825B1 (en
EP0327825A3 (en
Inventor
Herbert Dipl.-Ing. Grolla
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Heinrich Wagner Sinto Maschinenfabrik GmbH
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Heinrich Wagner Sinto Maschinenfabrik GmbH
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Application filed by Heinrich Wagner Sinto Maschinenfabrik GmbH filed Critical Heinrich Wagner Sinto Maschinenfabrik GmbH
Priority to AT89100553T priority Critical patent/ATE75171T1/en
Publication of EP0327825A2 publication Critical patent/EP0327825A2/en
Publication of EP0327825A3 publication Critical patent/EP0327825A3/en
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Publication of EP0327825B1 publication Critical patent/EP0327825B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/02—Machines in which the moulds are moved during a cycle of successive operations
    • B22C11/04—Machines 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 for forming a sand mold by means of a molding box and a model plate, sand being filled in a first working step and the sand being subsequently compacted in a second working step.
  • the molding process is carried out by joining a model plate and a molding box, whereupon the molding sand is filled into the molding box. The sand is then compacted and, after the sand has achieved sufficient strength, the sand mold is separated from the model plate.
  • Such molding machines are usually operated manually, i. H. an operator controls the individual work steps depending on the time that the operator needs in each case.
  • the manual work required for this includes in particular the feeding of an empty molding box, the filling of molding sand and the removal of the finished sand mold.
  • roller conveyors are already used in some molding machines for the transport or removal of the molding boxes or the finished sand molds.
  • Known molding machines are usually designed so that since the model plate during the molding process remains essentially stationary, in each case only an upper box shape or a lower box shape, ie a sand mold which forms the upper part of the finished mold, or a sand mold which forms the lower part of the finished sand mold can be produced. In this case it is necessary to use several molding machines in a multi-part sand mold. With a two-part sand mold, at least two molding machines are required.
  • Molding machines are also known, by means of which both the upper box shape and the lower box shape can be produced using only one molding machine, but in these cases it is necessary to alternate the respective model plates for the upper or model half.
  • the production of the finished sand molds takes place in these machines by first producing a certain number of lower box molds, whereupon a suitable quantity of upper box molds can then be created. Even with such machines, it proves disadvantageous that considerable organizational effort is required to ensure that an equal number of usable upper box molds and lower box molds are produced. Furthermore, it proves to be particularly time-consuming if only one half of the mold can be produced at a time, since the operator cannot act during the compaction of the sand and is therefore not at full capacity during this work step.
  • the invention has for its object to provide a molding machine of the type mentioned, in which an equal number of upper box molds and lower box molds can be produced with minimal expenditure of time and in particular a good utilization of both the human worker and the molding machine itself can be achieved.
  • the object is achieved by a pivotable about a horizontal axis table for receiving the mold box and the model plate for the upper mold half and the mold box and the model plate for the lower mold half, the mold boxes and model plates being arranged diametrically opposite one another on the table and one molding box with a model plate can be pivoted into a sand filling station, while the other molding box with the model plate can be pivoted into a sand compacting station.
  • the molding machine according to the invention is characterized by a number of considerable advantages. On the one hand, it is possible to produce both an upper box shape and a lower box shape on a single molding machine in such a way that an equal number of upper box shapes and lower box shapes can always be removed from the molding machine.
  • Another significant advantage of the invention is that it is not necessary to handle the model plates for the upper mold box or the lower mold box individually, rather the Model plates both remain on the swiveling table, so that it is only necessary to feed the mold boxes or to transport them away.
  • Another significant advantage of the molding machine according to the invention is that both a sand filling station and a sand compacting station are provided, so that it is not necessary for the operator or the molding machine to be underused or underused during one of the work steps. While in the molding machine according to the invention there is a filled molding box in the sand compacting station, the other molding box with the associated model is pivoted into the sand filling station, so that the operator can sand the other molding box during the time it takes for the machine to compact the sand can fill.
  • the molding machine according to the invention is not restricted to a specific type of compression of molding sand, rather it is possible in the sand compression station to use a wide variety of technical or physical methods for sand compression.
  • a particularly advantageous embodiment of the molding machine is given in that the table for removing the molding box filled with compressed molding sand from the model plate is designed as a lifting table. Since the molding sand is usually filled into the molding box from above, the filling process as such is not disturbed or interrupted by the fact that the lifting table is moved in the vertical direction. On the other hand, by moving the lifting table, it is possible in a particularly simple manner to separate the molding box from the model plate, since the vertical movement required for this is not carried out by the molding box, but only by the table.
  • a lifting device which raises the molding box is provided in the region of the sand compacting station for removing the molding box filled with compacted sand from the model plate. In this way, before swiveling back the table, it is possible to lift the molding box with the compressed sand upwards, so that only the model plate remains on the table.
  • At least one transport device is provided in the area of the sand compacting station for the removal of the molding box.
  • the mold box which is separate from the model plate and encompasses the mold half, can thus be removed in a particularly simple and material-friendly manner.
  • the transport device comprises at least two pivot levers, which have a top end region about a horizontal axis are pivotally mounted on a frame of the molding machine in the upper region of the sand compacting station and bearing rollers are provided at the lower end regions for receiving and horizontally moving the molding box.
  • This configuration makes it possible in a particularly simple manner to receive the molding box and to move it laterally by means of the bearing rollers, it being possible in particular to pass the molding box thus received directly onto a roller conveyor.
  • This type of handling prevents damage to the model half. Possible damage due to improper handling on the part of the operating personnel also appears.
  • the molding machine has a horizontally arranged table 3, which is pivotable about a vertical axis 4.
  • the table 3 is dimensioned such that two model plates 2 can be arranged on its top, one model plate 2 representing the mold half for the upper mold box, while the other model plate forms the mold half for the lower box mold.
  • a sand filling station 5 is shown on the left side, while the molding machine has a sand compacting station 6 on the right side.
  • a molding box 1 is placed on the model plate 2 located in the sand filling station, which is open at the top and on the top of which a filling frame 13 is arranged, which facilitates the introduction of the molding sand and its distribution.
  • the table 3 is pivoted in that the table 3 is fixedly mounted on a rotary column 14 which can be rotated about the axis 4 by means of a lever device 15 relative to a frame 11 of the molding machine.
  • the lever device 15 is shown in a schematic manner.
  • the table 3 can be pivoted through 180 °, whereby, due to the drive by means of the lever device, there is no rotation of the table describing a full circular arc, but only a pivoting back and forth.
  • the molding machine As shown in Figs. 1 and 2, the molding machine, as shown in Figs. 1 and 2, has a lifting device 16 with which it is possible to lift either the table 3 or only the model plate 2 located in the area of the sand compacting station, so that it is possible is, the molding box 1 in the position shown on the right side of Fig. 1.
  • a lifting device 16 with which it is possible to lift either the table 3 or only the model plate 2 located in the area of the sand compacting station, so that it is possible is, the molding box 1 in the position shown on the right side of Fig. 1.
  • two pivot levers 9 are mounted so that they can each be pivoted about a horizontal axis 10.
  • the pivoting option is shown in Fig. 1 by the arrows.
  • the pivot levers 9 each carry a plurality of bearing rollers 12, which are dimensioned and arranged so that it is possible to reach under the molding box 1 so that it is supported on the bearing rollers 12 and is laterally displaceable. It is thus possible to
  • a compression press 17 is also provided on the upper region of the frame 11, by means of which the molding sand filled in the sand filling station 5 can be compressed in the sand compression station 6.
  • the model plate 2 is lifted out of the turntable 3 by the lifting device 16 and pressed together with the molding box 1 and the filling frame 13, which are lifted from their supports by the lifting movement, against the frame 11 of the compacting device 17. The compaction device then comes into action.
  • Fig. 2 shows a side view of the molding machine shown in Fig. 1, from which in particular the compression press 17 can be seen particularly clearly. Like the lifting device 16, this has hydraulic actuating devices by means of which the molding machine can be controlled.
  • the lever device 15 shown in Figs. 1 and 3 for pivoting the table 3 is advantageously in the form of a hydraulic cylinder 15 '.
  • Fig. 3 a plan view of the molding machine according to the invention is shown schematically, from which in particular the possibility of pivoting the table 3 from the sand filling station 5 into the sand compaction station 6 is recognizable. From Fig. 3 it can also be seen that the frame 11, which surrounds the sand compacting station 6, is designed so that the molding box 1 in the sand filling station 5 is freely accessible from above, so that the filling of molding sand is not hindered.
  • the invention is not limited to the exemplary embodiment shown, rather it is possible within the scope of the invention to further develop the molding machine in such a way that the mold box is separated from the model plate in the sand compacting station in a different way. For example, it is possible to only lift the model plate relative to the table in order to hang the molding box in the transport device formed by the swivel lever. It is also possible according to the invention to carry out the removal of a mold box filled with a mold or the supply of an empty mold box in another way, for example by using overhead conveyors instead of the roller conveyors described.
  • the exemplary embodiment of the molding machine according to the invention is shown only schematically, and a detailed description of the sand feed devices and of the feed and removal devices for the molding boxes has been omitted. Furthermore, no details regarding the fastening and storage of the model plates and the molding boxes were given, since these are known from the prior art.
  • the dimensioning of the molding machine it is possible to adapt it to the respective operating conditions, in particular it is also possible to produce an upper box shape or a lower box shape which can be used to cast several workpieces.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Organic Insulating Materials (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

A moulding machine for the prodn. of sand moulds has a work table which can be swivelled around a vertical axis and carries a moulding box and a pattern plate for the top half and a moulding box and a pattern plate for the bottom half of the mould, on opposite sides. One moulding box is situated in the sand filling station and another in the sand compacting station.

Description

Die Erfindung bezieht sich auf eine Formmaschine zum Ausbilden einer Sandform mittels eines Formkastens und einer Modellplatte, wobei in einem ersten Arbeits­schritt Sand eingefüllt und anschließend in einem zweiten Arbeitsschritt der Sand verdichtet wird.The invention relates to a molding machine for forming a sand mold by means of a molding box and a model plate, sand being filled in a first working step and the sand being subsequently compacted in a second working step.

Bei bekannten Formmaschinen der obengenannten Art erfolgt der Formvorgang dadurch, daß eine Modellplatte und ein Formkasten zusammengefügt werden, woraufhin der Formsand in den Formkasten eingefüllt wird. Anschließend erfolgt eine Verdichtung des Sandes und, nachdem der Sand eine ausreichende Festigkeit erreicht hat, eine Trennung der Sandform von der Modellplatte. Üblicher­weise erfolgt die Bedienung derartiger Formmaschinen manuell, d. h. eine Bedienungsperson steuert die ein­zelnen Arbeitsschritte in Abhängigkeit von der Zeit­vorgabe, die die Bedienungsperson jeweils benötigt. Die hierzu erforderlichen manuellen Arbeiten umfassen ins­besondere die Zuführung jeweils eines leeren Form­kastens, das Einfüllen von Formsand und der Abtransport der fertigen Sandform. Zur Unterstützung dieser manuel­len Tätigkeiten werden bei einigen Formmaschinen bereits Rollenbahnen zum Zutransport bzw. Abtransport der Form­kästen bzw. der fertigen Sandformen verwendet.In known molding machines of the type mentioned above, the molding process is carried out by joining a model plate and a molding box, whereupon the molding sand is filled into the molding box. The sand is then compacted and, after the sand has achieved sufficient strength, the sand mold is separated from the model plate. Such molding machines are usually operated manually, i. H. an operator controls the individual work steps depending on the time that the operator needs in each case. The manual work required for this includes in particular the feeding of an empty molding box, the filling of molding sand and the removal of the finished sand mold. To support these manual tasks, roller conveyors are already used in some molding machines for the transport or removal of the molding boxes or the finished sand molds.

Bekannte Formmaschinen sind üblicherweise so ausgestal­tet, daß, da die Modellplatte während des Formvorgangs im wesentlichen ortsfest bleibt, jeweils nur eine Ober­kastenform oder eine Unterkastenform, d. h. eine Sand­form, welche den oberen Teil der fertigen Form bildet, oder eine Sandform, die den unteren Teil der fertigen Sandform bildet, hergestellt werden können. In diesem Fall ist es somit erforderlich, bei einer mehrteiligen Sandform mehrere Formmaschinen zu verwenden. Bei einer zweiteiligen Sandform sind somit mindestens zwei Form­maschinen erforderlich. Dabei erweist es sich im prak­tischen Betrieb als ausgesprochen unpraktisch und hin­derlich, daß zueinander zugehörige Formhälften in unter­schiedlichen Formmaschinen und räumlich getrennt zu­einanader hergestellt werden müssen, da es beispiels­weise nicht möglich ist, die jeweiligen Herstellungs­taktzeiten so aneinander anzupassen, daß stets die gleiche Zahl von Oberkastenformen und Unterkastenformen erzeugt werden können. Durch eine auch nur geringfügige Betriebsstörung einer der Formmaschinen ergibt sich die Notwendigkeit, auch den Betrieb der anderen Formmaschine einzustellen oder zu drosseln.Known molding machines are usually designed so that since the model plate during the molding process remains essentially stationary, in each case only an upper box shape or a lower box shape, ie a sand mold which forms the upper part of the finished mold, or a sand mold which forms the lower part of the finished sand mold can be produced. In this case it is necessary to use several molding machines in a multi-part sand mold. With a two-part sand mold, at least two molding machines are required. It proves to be extremely impractical and inconvenient in practical operation that associated mold halves have to be produced in different molding machines and spatially separated from one another, since it is not possible, for example, to adapt the respective production cycle times to one another so that the same number of top box shapes and Sub-box shapes can be created. A slight malfunction of one of the molding machines results in the need to also stop or throttle the operation of the other molding machine.

Es sind auch Formmaschinen bekannt, mittels derer sowohl die Oberkastenform als auch die Unterkastenform unter Verwendung nur einer Formmaschine herstellbar sind, wobei es jedoch in diesen Fällen erforderlich ist, die jeweiligen Modellplatten für die obere bzw. Modellhälfte abwechselnd auszutauschen. Die Herstellung der fertigen Sandformen erfolgt somit bei diesen Maschinen dadurch, daß zuerst eine bestimmte Stückzahl an Unterkastenformen hergestellt wird, woraufhin dann eine passende Menge von Oberkastenformen erstellt werden kann. Auch bei derarti­gen Maschinen erweist es sich als nachteilig, daß ein erheblicher organisatorischer Aufwand erforderlich ist, um sicherzustellen, daß eine gleiche Anzahl verwendbarer Oberkastenformen und Unterkastenformen hergestellt wird. Weiterhin erweist es sich als besonders zeitaufwendig, wenn nur jeweils eine Formhälfte hergestellt werden kann, da die Bedienungsperson während des Verdichtens des Sandes nicht tätig werden kann und deshalb zumin­dest während dieses Arbeitssschrittes nicht ausgelastet ist.Molding machines are also known, by means of which both the upper box shape and the lower box shape can be produced using only one molding machine, but in these cases it is necessary to alternate the respective model plates for the upper or model half. The production of the finished sand molds takes place in these machines by first producing a certain number of lower box molds, whereupon a suitable quantity of upper box molds can then be created. Even with such machines, it proves disadvantageous that considerable organizational effort is required to ensure that an equal number of usable upper box molds and lower box molds are produced. Furthermore, it proves to be particularly time-consuming if only one half of the mold can be produced at a time, since the operator cannot act during the compaction of the sand and is therefore not at full capacity during this work step.

Der Erfindung liegt die Aufgabe zugrunde, eine Formma­schine der eingangs genannten Art zu schaffen, bei wel­cher eine gleiche Anzahl an Oberkastenformen und Unter­kastenformen bei minimalem Zeitaufwand herstellbar sind und wobei insbesondere eine gute Auslastung sowohl der menschlichen Arbeitskraft als auch der Formmaschine selbst erreicht werden kann.The invention has for its object to provide a molding machine of the type mentioned, in which an equal number of upper box molds and lower box molds can be produced with minimal expenditure of time and in particular a good utilization of both the human worker and the molding machine itself can be achieved.

Erfindungsgemäß wird die Aufgabe gelöst durch einen um eine horizontale Achse schwenkbaren Tisch zur Aufnahme des Formkastens und der Modellplatte für die obere Form­hälfte und des Formkastens und der Modellplatte für die untere Formhälfte, wobei die Formkästen und Modell­platten jeweils diametral einander gegenüberliegend auf dem Tisch angeordnet sind und wobei jeweils ein Form­kasten mit einer Modellplatte in eine Sand-Befüllungs­station verschwenkbar ist, während der andere Formkasten mit der Modellplatte in eine Sand-Verdichtungsstation verschwenkbar ist.According to the invention the object is achieved by a pivotable about a horizontal axis table for receiving the mold box and the model plate for the upper mold half and the mold box and the model plate for the lower mold half, the mold boxes and model plates being arranged diametrically opposite one another on the table and one molding box with a model plate can be pivoted into a sand filling station, while the other molding box with the model plate can be pivoted into a sand compacting station.

Die erfindungsgemäße Formmaschine zeichnet sich durch eine Reihe erheblicher Vorteile aus. Zum einen ist es möglich, auf einer einzigen Formmaschine sowohl eine Oberkastenform als auch eine Unterkastenform so herzu­stellen, daß stets eine gleiche Anzahl von Oberkasten­formen und Unterkastenformen von der Formmaschine ab­geführt werden können. Ein weiterer erheblicher Vorteil der Erfindung liegt darin, daß es nicht erforderlich ist, die Modellplatten für den Oberformkasten bzw. den Unterformkasten einzeln zu handhaben, vielmehr die Modellplatten beide auf dem schwenkbaren Tisch ver­bleiben, so daß es lediglich erforderlich ist, jeweil die Formkästen zuzuführen bzw. wegzutransportieren.The molding machine according to the invention is characterized by a number of considerable advantages. On the one hand, it is possible to produce both an upper box shape and a lower box shape on a single molding machine in such a way that an equal number of upper box shapes and lower box shapes can always be removed from the molding machine. Another significant advantage of the invention is that it is not necessary to handle the model plates for the upper mold box or the lower mold box individually, rather the Model plates both remain on the swiveling table, so that it is only necessary to feed the mold boxes or to transport them away.

Ein weiterer erheblicher Vorteil der erfindungsgemäßen Formmaschine liegt darin, daß sowohl eine Sandbefül­lungsstation als auch eine Sandverdichtungsstation vor­gesehen sind, so daß es nicht erforderlich ist, daß die Bedienungsperson oder die Formmaschine während eines der Arbeitsschritte nicht oder nur unzureichend ausgelastet sind. Während nämlich bei der erfindungsgemäßen Form­maschine sich ein gefüllter Formkasten in der Sandver­dichtungsstation befindet, ist der andere Formkasten mit dem zugehörigen Modell in die Sandbefüllungsstation ver­schwenkt, so daß die Bedienungsperson während der Zeit, die die Maschine zum Verdichten des Sandes benötigt, den anderen Formkasten mit Sand befüllen kann.Another significant advantage of the molding machine according to the invention is that both a sand filling station and a sand compacting station are provided, so that it is not necessary for the operator or the molding machine to be underused or underused during one of the work steps. While in the molding machine according to the invention there is a filled molding box in the sand compacting station, the other molding box with the associated model is pivoted into the sand filling station, so that the operator can sand the other molding box during the time it takes for the machine to compact the sand can fill.

Ein weiterer Vorteil ergibt sich daraus, daß anstatt der manuellen Befüllung auch eine maschinelle Sandbefüllung möglich ist. Durch eine derartige Ausgestaltung wäre die Formmaschine voll automatisierbar betreibbar, so daß eine Bedienungsperson lediglich zur Beaufsichtigung der Sandbefüllung und möglicherweise zur Unterstützung der Sandbefüllung erforderlich ist.Another advantage results from the fact that mechanical sand filling is also possible instead of manual filling. Such a configuration would enable the molding machine to be operated in a fully automated manner, so that an operator is only required to supervise the sand filling and possibly to support the sand filling.

Weiterhin erweist es sich als vorteilhaft, daß die er­findungsgemäße Formmaschine nicht auf eine bestimmte Art der Verdichtung von Formsand beschränkt ist, vielmehr ist es in der Sandverdichtungsstation möglich, die ver­schiedensten technischen oder physikalischen Verfahren zur Sandverdichtung anzuwenden.Furthermore, it proves to be advantageous that the molding machine according to the invention is not restricted to a specific type of compression of molding sand, rather it is possible in the sand compression station to use a wide variety of technical or physical methods for sand compression.

Eine besonders vorteilhafte Ausgestaltung der Form­maschine ist dadurch gegeben, daß der Tisch zur Entnahme des mit verdichtetem Formsand gefüllten Formkastens von der Modellplatte als Hubtisch ausgebildet ist. Da übli­cherweise der Formsand von oben in den Formkasten ein­gefüllt wird, wird der Befüllungsvorgang als solcher nicht dadurch gestört oder unterbrochen, daß der Hub­tisch in vertikaler Richtung verfahren wird. Anderer­seits ist es durch eine Bewegung des Hubtisches auf be­sonders einfache Weise möglich, den Formkasten von der Modellplatte zu trennen, da die dazu erforderliche Vertikalbewegung nicht von dem Formkasten, sondern nur von dem Tisch ausgeführt wird.A particularly advantageous embodiment of the molding machine is given in that the table for removing the molding box filled with compressed molding sand from the model plate is designed as a lifting table. Since the molding sand is usually filled into the molding box from above, the filling process as such is not disturbed or interrupted by the fact that the lifting table is moved in the vertical direction. On the other hand, by moving the lifting table, it is possible in a particularly simple manner to separate the molding box from the model plate, since the vertical movement required for this is not carried out by the molding box, but only by the table.

Es erweist sich auch als günstig, daß zur Entnahme des mit verdichtetem Sand befüllten Formkastens von der Modellplatte im Bereich der Sandverdichtungsstation eine den Formkasten anhebende Ternnvorrichtung vorgesehen ist. Auf diese Weise ist es vor einem Zurückschwenken des Tisches möglich, den Formkasten mit dem verdichte­ten Sand nach oben abzuheben, so daß lediglich die Modellplatte auf dem Tisch zurückbleibt. Dies erweist sich insbesondere dadurch als besonders vorteilhaft, daß durch eine derartige Trennung des Formkastens von der Modellplatte der Betriebsablauf der Formmaschine nicht unterbrochen wird und es nicht erforderlich ist, eine zusätzliche Entladestation vorzusehen.It has also proven to be advantageous that a lifting device which raises the molding box is provided in the region of the sand compacting station for removing the molding box filled with compacted sand from the model plate. In this way, before swiveling back the table, it is possible to lift the molding box with the compressed sand upwards, so that only the model plate remains on the table. This proves to be particularly advantageous in that the operating sequence of the molding machine is not interrupted by such a separation of the molding box from the model plate and it is not necessary to provide an additional unloading station.

In günstiger Ausgestaltung ist im Bereich der Sand­verdichtungsstation zumindest eine Transporteinrichtung zum Abtransport des Formkastens vorgesehen. Der von der Modellplatte getrennte, die Formhälfte umfassende Form­kasten kann somit besonders einfach und materialschonend abtransportiert werden.In a favorable embodiment, at least one transport device is provided in the area of the sand compacting station for the removal of the molding box. The mold box, which is separate from the model plate and encompasses the mold half, can thus be removed in a particularly simple and material-friendly manner.

Eine weitere vorteilhafte Weiterbildung der erfindungs­gemäßen Formmaschine ist dadurch gegeben, daß die Trans­porteinrichtung zumindest zwei Schwenkhebel umfaßt, die mit ihren oberen Endbereichen um eine horizontale Achse im oberen Bereich der Sandverdichtungsstation ver­schwenkbar an einem Rahmen der Formmaschine gelagert sind und an deren unteren Endbereichen Lagerrollen zur Aufnahme und horizontalen Bewegung des Formkastens vor­gesehen sind. Durch diese Ausgestaltung ist es auf be­sonders einfache Weise möglich, den Formkasten aufzu­nehmen und mittels der Lagerrollen seitlich zu ver­fahren, wobei es insbesondere möglich ist, den so auf­genommenen Formkasten direkt auf eine Rollenbahn weiter­zuleiten. Durch diese Art der Handhabung wird eine Be­schädigung der Modellhälfte vermieden. Auch scheinen mögliche Beschädigungen durch eine unsachgemäße Hand­habung seitens des Bedienungspersonals aus.A further advantageous development of the molding machine according to the invention is provided in that the transport device comprises at least two pivot levers, which have a top end region about a horizontal axis are pivotally mounted on a frame of the molding machine in the upper region of the sand compacting station and bearing rollers are provided at the lower end regions for receiving and horizontally moving the molding box. This configuration makes it possible in a particularly simple manner to receive the molding box and to move it laterally by means of the bearing rollers, it being possible in particular to pass the molding box thus received directly onto a roller conveyor. This type of handling prevents damage to the model half. Possible damage due to improper handling on the part of the operating personnel also appears.

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

  • Abb. 1 eine schematische Seitenansicht der erfindungsgemäßen Formmaschine,
  • Abb. 2 eine Seitenansicht auf die linke Seite der Formmaschine gemäß Abb. 1 und
  • Abb. 3 eine Draufsicht, ebenfalls in schema­tischer Ausgestaltung, auf die erfin­dungsgemäße Formmaschine.
The invention is described below using an exemplary embodiment in conjunction with the drawing. It shows:
  • Fig. 1 is a schematic side view of the molding machine according to the invention,
  • Fig. 2 is a side view of the left side of the molding machine according to Fig. 1 and
  • Fig. 3 is a plan view, also in a schematic embodiment, of the molding machine according to the invention.

Wie in Abb. 1 dargestellt, weist die erfindungsgemäße Formmaschine einen horizontal angeordneten Tisch 3 auf, welcher um eine vertikale Achse 4 verschwenkbar ist. Der Tisch 3 ist so bemessen, daß zwei Modellplatten 2 auf seiner Oberseite angeordnet werden können, wobei eine Modellplatte 2 die Formhälfte für den Oberformkasten darstellt, während die andere Modellplatte die Form­hälfte für die Unterkastenform bildet. Durch Abformung dieser beiden Modellkästen ist es somit möglich, eine vollständige Gießform zu erzeugen. In Abb. 1 ist auf der linken Seite eine Sandbefüllungstation 5 dargestellt, während die Formmaschine auf der rechten Seite eine Sandverdichtungsstation 6 aufweist.As shown in Fig. 1, the molding machine according to the invention has a horizontally arranged table 3, which is pivotable about a vertical axis 4. The table 3 is dimensioned such that two model plates 2 can be arranged on its top, one model plate 2 representing the mold half for the upper mold box, while the other model plate forms the mold half for the lower box mold. By taking an impression of these two model boxes it is thus possible to produce a complete casting mold. In Fig. 1, a sand filling station 5 is shown on the left side, while the molding machine has a sand compacting station 6 on the right side.

Auf die in der Sandbefüllungsstation befindliche Modell­platte 2 ist ein Formkasten 1 aufgesetzt, welcher nach oben offen ist und an dessen Oberseite ein Füllrahmen 13 angeordnet ist, der die Einleitung des Formsandes und dessen Verteilung erleichtert.A molding box 1 is placed on the model plate 2 located in the sand filling station, which is open at the top and on the top of which a filling frame 13 is arranged, which facilitates the introduction of the molding sand and its distribution.

In der rechten Bildhälfte von Abb. 1 ist ein Arbeits­schritt dargestellt, in welchem der zugehörige Form­kasten 1 nach der Verdichtung des Sandes von der Modell­platte 2 bereits abgehoben ist.In the right half of Fig. 1, a work step is shown in which the associated molding box 1 is already lifted off the model plate 2 after the sand has been compacted.

Eine Verschwenkung des Tisches 3 erfolgt bei dem gezeig­ten Ausführungsbeispiel dadurch, daß der Tisch 3 fest an einer Drehsäule 14 gelagert ist, welche mittels einer Hebeleinrichtung 15 relativ zu einem Rahmen 11 der Form­maschine um die Achse 4 drehbar ist. In der in Abb. 3 dargestellten Draufsicht ist die Hebeleinrichtung 15 in schematischer Weise dargestellt. Bei dem hier gezeigten Ausführungsbeispiel kann der Tisch 3 jeweils um 180° verschwenkt werden, wobei, bedingt durch den Antrieb mittels der Hebeleinrichtung, keine einen vollen Kreis­bogen beschreibende Drehung des Tisches erfolgt, son­dern lediglich eine Hin- und Herverschwenkung.In the exemplary embodiment shown, the table 3 is pivoted in that the table 3 is fixedly mounted on a rotary column 14 which can be rotated about the axis 4 by means of a lever device 15 relative to a frame 11 of the molding machine. In the top view shown in Fig. 3, the lever device 15 is shown in a schematic manner. In the exemplary embodiment shown here, the table 3 can be pivoted through 180 °, whereby, due to the drive by means of the lever device, there is no rotation of the table describing a full circular arc, but only a pivoting back and forth.

Unterhalb der Sandverdichtungsstation 6 weist die Form­maschine, wie in den Abb. 1 und 2 dargestellt, eine Hebeeinrichtung 16 auf, mit der es möglich ist, ent­weder den Tisch 3 oder auch nur die im Bereich der Sandverdichtungsstation befindliche Modellplatte 2 an­zuheben, so daß es möglich ist, den Formkasten 1 in die auf der rechten Seite der Abb. 1 dargestellte Position zu bringen. Am oberen Bereich des Rahmens 11 sind zwei Schwenkhebel 9 so gelagert, daß diese jeweils um eine horizontale Achse 10 verschwenkbar sind. Die Verschwenk­möglichkeit ist in Abb. 1 durch die Pfeile dargestellt. An ihren unteren Enden tragen die Schwenkhebel 9 jeweils mehrere Lagerrollen 12, welche so dimensioniert und an­geordnet sind, daß es möglich ist, den Formkasten 1 zu untergreifen, so daß dieser auf den Lagerrollen 12 ge­lagert ist und seitlich verschiebbar ist. Somit ist es möglich, den Formkasten 1 von der in Abb. 1 rechts ge­zeigten Position auf eine Rollenbahn zu verschieben.Below the sand compacting station 6, the molding machine, as shown in Figs. 1 and 2, has a lifting device 16 with which it is possible to lift either the table 3 or only the model plate 2 located in the area of the sand compacting station, so that it is possible is, the molding box 1 in the position shown on the right side of Fig. 1. At the upper area of the frame 11, two pivot levers 9 are mounted so that they can each be pivoted about a horizontal axis 10. The pivoting option is shown in Fig. 1 by the arrows. At their lower ends, the pivot levers 9 each carry a plurality of bearing rollers 12, which are dimensioned and arranged so that it is possible to reach under the molding box 1 so that it is supported on the bearing rollers 12 and is laterally displaceable. It is thus possible to move the molding box 1 from the position shown on the right in Fig. 1 to a roller conveyor.

Ebenfalls am oberen Bereich des Rahmens 11 ist eine Ver­dichtungspresse 17 vorgesehen, mittels derer der in der Sandbefüllungsstation 5 eingefüllte Formsand in der Sand­verdichtungsstation 6 verdichtet werden kann. Zur Ver­dichtung des Formsandes wird die Modellplatte 2 durch die Hubvorrichtung 16 aus dem Drehtisch 3 herausgehoben und zusammen mit dem Formkasten 1 und dem Füllrahmen 13, die durch die Hubbewegung von ihren Auflagen abgehoben werden, gegen den Rahmen 11 der Verdichtungsvorrichtung 17 gepreßt. Danach tritt die Verdichtungsvorrichtung in Aktion.A compression press 17 is also provided on the upper region of the frame 11, by means of which the molding sand filled in the sand filling station 5 can be compressed in the sand compression station 6. To compact the molding sand, the model plate 2 is lifted out of the turntable 3 by the lifting device 16 and pressed together with the molding box 1 and the filling frame 13, which are lifted from their supports by the lifting movement, against the frame 11 of the compacting device 17. The compaction device then comes into action.

Abb. 2 zeigt eine Seitenansicht der in Abb. 1 dargestell­ten Formmaschine, aus welcher insbesondere die Verdich­tungspresse 17 besonders deutlich zu erkennen ist. Diese weist, ebenso wie die Hebeinrichtung 16 hydraulische Be­tätigungseinrichtungen auf, mittels derer eine Steuerung der Formmaschine möglich ist. Auch die in den Abb. 1 und 3 gezeigte Hebeleinrichtung 15 zum Verschwenken des Tisches 3 ist in vorteilhafter Weise in Form eines Hydraulikzylin­ders 15′ ausgebildet.Fig. 2 shows a side view of the molding machine shown in Fig. 1, from which in particular the compression press 17 can be seen particularly clearly. Like the lifting device 16, this has hydraulic actuating devices by means of which the molding machine can be controlled. The lever device 15 shown in Figs. 1 and 3 for pivoting the table 3 is advantageously in the form of a hydraulic cylinder 15 '.

In Abb. 3 ist in schematischer Weise eine Draufsicht auf die erfindungsgemäße Formmaschine gezeigt, aus welcher insbesondere die Verschwenkmöglichkeit des Tisches 3 aus der Sandbefüllungsstation 5 in die Sandverdichtungs­ station 6 erkennbar ist. Aus der Abb. 3 ist ferner er­sichtlich, daß der Rahmen 11, welcher die Sandverdich­tungsstation 6 umgibt, so ausgebildet ist, daß der Form­kasten 1 in der Sandbefüllungsstation 5 von oben frei zugänglich ist, so daß eine Einfüllung von Formsand nicht behindert wird.In Fig. 3, a plan view of the molding machine according to the invention is shown schematically, from which in particular the possibility of pivoting the table 3 from the sand filling station 5 into the sand compaction station 6 is recognizable. From Fig. 3 it can also be seen that the frame 11, which surrounds the sand compacting station 6, is designed so that the molding box 1 in the sand filling station 5 is freely accessible from above, so that the filling of molding sand is not hindered.

Die Erfindung ist nicht auf das gezeigte Ausführungsbei­spiel beschränkt, vielmehr ist es im Rahmen der Erfin­dung möglich, die Formmaschine insbesondere dahingehend weiterzubilden, daß die Trennung des Formkastens von der Modellplatte in der Sandverdichtungsstation auf andere Weise erfolgt. Beispielsweise ist es möglich, lediglich die Modellplatte relativ zu dem Tisch anzuheben, um den Formkasten in die durch den Schwenkhebel gebildete Transportvorrichtung einzuhängen. Auch ist es erfin­dungsgemäß möglich, die Abfuhr eines mit einer Form ge­füllten Formkastens bzw. die Zufuhr eines leeren Form­kastens auf andere Weise vorzunehmen, beispielsweise durch Verwendung von Hängefördereinrichtungen anstelle der beschriebenen Rollenbahnen.The invention is not limited to the exemplary embodiment shown, rather it is possible within the scope of the invention to further develop the molding machine in such a way that the mold box is separated from the model plate in the sand compacting station in a different way. For example, it is possible to only lift the model plate relative to the table in order to hang the molding box in the transport device formed by the swivel lever. It is also possible according to the invention to carry out the removal of a mold box filled with a mold or the supply of an empty mold box in another way, for example by using overhead conveyors instead of the roller conveyors described.

In den Abb. 1 bis 3 ist das Ausführungsbeispiel der er­findungsgemäßen Formmaschine nur schematisch darge­stellt, auf eine detaillierte Beschreibung der Sand­zufuhreinrichtungen sowie der Zu- und Abtransportvor­richtungen für die Formkästen wurde verzichtet. Weiter­hin wurde darauf verzichtet, Einzelheiten bezüglich der Befestigung und Lagerung der Modellplatten und der Form­kästen dazustellen, da diese aus dem Stand der Technik bekannt sind. Hinsichtlich der Dimensionierung der Form­maschine ist es möglich, diese den jeweiligen Betriebs­bedingungen anzupassen, insbesondere ist es auch mög­lich, eine Oberkastenform bzw. eine Unterkastenform her­zustellen, die zum Abguß mehrerer Werkstücke dienen kann.1 to 3, the exemplary embodiment of the molding machine according to the invention is shown only schematically, and a detailed description of the sand feed devices and of the feed and removal devices for the molding boxes has been omitted. Furthermore, no details regarding the fastening and storage of the model plates and the molding boxes were given, since these are known from the prior art. With regard to the dimensioning of the molding machine, it is possible to adapt it to the respective operating conditions, in particular it is also possible to produce an upper box shape or a lower box shape which can be used to cast several workpieces.

Claims (10)

1. Formmaschine zum Ausbilden einer Sandform mittels eines Formkastens und einer Modellplatte, wobei in einem ersten Arbeitsschritt Sand eingefüllt und an­schließend der Sand in einem zweiten Arbeitsschritt verdichtet wird, gekennzeichnet durch einen um eine vertikale Achse (4) schwenkbaren Tisch (3) zur Auf­nahme des Formkastens (1) und der Modellplatte (2) für die obere Formhälfte und des Formkastens (1) und der Modellplatte (2) für die untere Formhälfte, wobei die Formkästen (1) und Modellplatten (2) je­weils diametral einander gegenüberliegend auf dem Tisch (3) angeordnet sind und wobei jeweils ein Formkasten (1) mit einer Modellplatte (2) in eine Sand-Befüllungsstation (5) verschwenkbar ist, während der andere Formkasten (1) an der Modell­platte (2) in eine Sand-Verdichtungsstation (6) verschwenkbar ist.1. molding machine for forming a sand mold by means of a molding box and a model plate, sand being filled in a first working step and then the sand being compacted in a second working step, characterized by a table (3) which can be pivoted about a vertical axis (4) for receiving the Mold box (1) and the model plate (2) for the upper mold half and the mold box (1) and the model plate (2) for the lower mold half, the mold boxes (1) and model plates (2) being diametrically opposite one another on the table ( 3) are arranged and wherein a molding box (1) with a model plate (2) can be pivoted into a sand filling station (5), while the other molding box (1) on the model plate (2) into a sand compression station (6) is pivotable. 2. Formmaschine nach Anspruch 1, dadurch gekennzeich­net, daß zur Entnahme des mit verdichtetem Sand befüllten Formkastens (1) von der Modellplatte (2) im Bereich der Sand-Verdichtungsstation (5) eine den Formkasten (1) anhebende Trennvorrichtung vorgesehen ist.2. Molding machine according to claim 1, characterized in that for removing the mold box filled with compacted sand (1) from the model plate (2) in the area of the sand compacting station (5) a mold box (1) lifting separating device is provided. 3. Formkasten nach Anspruch 2, dadurch gekennzeichnet, daß der Tisch (3) zur Entnahme des mit verdichtetem Sand gefüllten Formkastens (1) von der Modellplatte (2) als Hubtisch ausgebildet ist.3. Mold box according to claim 2, characterized in that the table (3) for removing the mold box filled with compacted sand (1) from the model plate (2) is designed as a lifting table. 4. Formmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß im Bereich der Sand­verdichtungsstation (5) zumindest eine Transport­einrichtung zum Abtransport des Formkastens (1) vorgesehen ist.4. Molding machine according to one of claims 1 to 3, characterized in that in the region of the sand compacting station (5) at least one transport device is provided for the removal of the molding box (1). 5. Formmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Transporteinrichtung zumindest zwei Schwenkhebel (9) umfaßt, die mit ihren oberen Endbereichen um eine horizontale Achse (10) im oberen Bereich der Sandverdichtungsstation verschwenkbar an einem Rahmen (11) der Formmaschine gelagert sind und an deren unteren Endbereichen Lagerrollen (12) zur Aufnahme und horizontalen Be­wegung des Formkastens (1) vorgesehen sind.5. Molding machine according to one of claims 1 to 4, characterized in that the transport device comprises at least two pivot levers (9) which with their upper end regions about a horizontal axis (10) in the upper region of the sand compacting station pivotable on a frame (11) Molding machine are mounted and bearing rollers (12) for receiving and horizontal movement of the molding box (1) are provided at the lower end regions. 7. Formmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß im Bereich der Sand­verdichtungsstation eine Fördereinrichtung zum Transport eines leeren Kastens (1) vorgesehen ist.7. Molding machine according to one of claims 1 to 6, characterized in that a conveyor for transporting an empty box (1) is provided in the region of the sand compacting station. 8. Formmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß im Bereich der Sand­befüllungsstation (6) eine manuelle Sandzufuhrein­ richtung vorgesehen ist.8. Molding machine according to one of claims 1 to 7, characterized in that in the area of the sand filling station (6) a manual sand feed direction is provided. 9. Formmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß im Bereich der Sand­befüllungsstation (6) eine maschinelle Sandzufuhr­einrichtung vorgesehen ist.9. Molding machine according to one of claims 1 to 7, characterized in that a mechanical sand feed device is provided in the region of the sand filling station (6). 10. Formmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Tisch (3) zum Über­führen des Formkastens (1) und der Modellplatte (2) um jeweils 180° verschwenkbar ist.10. Molding machine according to one of claims 1 to 9, characterized in that the table (3) for transferring the molding box (1) and the model plate (2) is each pivotable by 180 °. 11. Formmaschine nach Anspruch 1 bis 10, dadurch ge­kennzeichnet, daß im Bereich der Sand-Befüllungs­station (5) eine Vorrichtung zum Aufsetzen eines Füllrahmens (13) auf den mit Sand zu füllenden Formkasten (1) angeordnet ist.11. Molding machine according to claim 1 to 10, characterized in that in the area of the sand filling station (5) a device for placing a filling frame (13) is arranged on the molding box to be filled with sand (1).
EP89100553A 1988-02-06 1989-01-13 Moulding machine Expired - Lifetime EP0327825B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89100553T ATE75171T1 (en) 1988-02-06 1989-01-13 MOLDING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3803648A DE3803648C2 (en) 1988-02-06 1988-02-06 Molding machine
DE3803648 1988-02-06

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EP0327825A2 true EP0327825A2 (en) 1989-08-16
EP0327825A3 EP0327825A3 (en) 1990-08-08
EP0327825B1 EP0327825B1 (en) 1992-04-22

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EP (1) EP0327825B1 (en)
AT (1) ATE75171T1 (en)
DE (2) DE3803648C2 (en)

Cited By (4)

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WO1995015826A1 (en) * 1993-12-11 1995-06-15 Adolf Hottinger Maschinenbau Gmbh Device for shooting foundry cores or moulds
EP0914887A1 (en) * 1997-07-29 1999-05-12 Foundry Automation S.a.s. de A. Visentin & C. Method and apparatus for producing foundry molds
CN109129225A (en) * 2018-08-27 2019-01-04 马鞍山市兴隆铸造有限公司 A kind of quantitative cloth sand device
CN114054687A (en) * 2021-11-15 2022-02-18 重庆市极鼎金属铸造有限责任公司 Take auxiliary function's foundry goods mould device

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DE19848049A1 (en) * 1998-10-19 2000-04-20 Josef Mertes Foundry molding machine

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DE7439210U (en) * 1975-04-17 Haeberle W Device for compacting pourable or flowable goods
DE6811936U (en) * 1968-12-18 1971-02-04 Badische Maschf Gmbh MOLDING MACHINE WITH STRAIGHT MOLDING BOX THROUGHOUT
DE2220276B2 (en) * 1972-04-25 1976-09-30 Ordena Trudowowo Krasnowo Snameni nautschno-issledowatelskij institut technologii awtomobilnoj promyschlennosti, Moskau PLANT FOR PRODUCING CASTING FORMS AND CORES
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995015826A1 (en) * 1993-12-11 1995-06-15 Adolf Hottinger Maschinenbau Gmbh Device for shooting foundry cores or moulds
US5701946A (en) * 1993-12-11 1997-12-30 Adolf Hottinger Maschinenbau Gmbh Apparatus for shooting foundry cores or molds
EP0914887A1 (en) * 1997-07-29 1999-05-12 Foundry Automation S.a.s. de A. Visentin & C. Method and apparatus for producing foundry molds
CN109129225A (en) * 2018-08-27 2019-01-04 马鞍山市兴隆铸造有限公司 A kind of quantitative cloth sand device
CN114054687A (en) * 2021-11-15 2022-02-18 重庆市极鼎金属铸造有限责任公司 Take auxiliary function's foundry goods mould device
CN114054687B (en) * 2021-11-15 2023-08-08 重庆市极鼎机械制造股份有限公司 Casting mold device with auxiliary function

Also Published As

Publication number Publication date
DE3803648A1 (en) 1989-08-17
EP0327825B1 (en) 1992-04-22
DE8817084U1 (en) 1992-08-13
EP0327825A3 (en) 1990-08-08
ATE75171T1 (en) 1992-05-15
DE3803648C2 (en) 1995-02-16

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