EP0878252A1 - Mould for automatic moulding plant and method for producing such a mould - Google Patents
Mould for automatic moulding plant and method for producing such a mould Download PDFInfo
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- EP0878252A1 EP0878252A1 EP98103795A EP98103795A EP0878252A1 EP 0878252 A1 EP0878252 A1 EP 0878252A1 EP 98103795 A EP98103795 A EP 98103795A EP 98103795 A EP98103795 A EP 98103795A EP 0878252 A1 EP0878252 A1 EP 0878252A1
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- Prior art keywords
- mold
- feeder
- sand
- casting
- box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
Definitions
- the invention relates to a casting mold and a method for the production of a casting mold consisting of one of two Mold box halves formed mold box, the means for the Has transport on automatic molding machines and a bonded sand mold, which, if necessary, with cores and provided with a pouring funnel and a feeder is.
- Casting molds with bound molding sands are either made with Molded boxes made of two mold box halves, this molding box is usually frame-shaped is formed and on two of its end faces with slats is provided with which he is on a roller conveyor automatic molding machine is transportable.
- This molding box gives the bound sand mold in it the required strength so that this easily can be transported.
- the sand for the mold can be clay-bound, which is an inexpensive reprocessing of the molding sand guaranteed.
- boxless molds are known, which are dependent of the casting from a variety of items these molds are no longer clay-bound, but are chemically bound to be sufficient Strength for their handling and pourability to obtain.
- These chemically bound sand forms require elaborate machines for producing the partial molds, the Cores as well as machines that turn these parts into one Put the mold together. Aside from the high apparatus There is another effort that must be made here Disadvantage in that the sand can only be reprocessed with great effort is. In addition to the expensive molding and assembly device represents a high cost factor.
- boxless forms of green sand which consist of individual identical cuboid blocks are constructed, the part on two opposite sides of the mold cavity.
- pouring spout as well as molded in the feeder.
- These blocks will be then pushed against each other with their mold cavities, so that they complement and support each other.
- the molding sand is shot from above, which means that they are in the shadow of the model Form areas do not get the same hardening as the remaining areas.
- the feeder can also only be limited in form and also essentially only to the side of the actual mold cavity, which severely limits the quality of the feeder. By injecting the molding sand is also a great wear on models received what the procedure makes expensive.
- Molding sand in molding boxes can not only be clay-bound but is also much cheaper in its manufacture.
- the molding box only needs one half of the molding box placed separately on a model plate, then the molding box is filled with sand. After mechanical The mold half is finished compacting the molding sand. This then lies horizontally with the mold cavity turned upwards so that cores are inserted can.
- the mold boxes are placed one above the other for casting, previously in the then upper mold box Mold opening and the feeder incorporated into the molding sand must become. This happens before turning the top one Molding box with rotating tools.
- These mold boxes are then poured horizontally, which is disadvantageous here that for the feeder in the mold only a relatively small one Volume remains and also the supply of the ones below Mold parts are not always optimal.
- the pouring funnel can be produced relatively easily, but prepares the training of the feeder problems, especially the Lucasr reduced the cross-section for shooting of the sand is available.
- the Kunststoffr reduced the cross-section for shooting of the sand is available.
- For casting aluminum such molds are less suitable, especially here large effective feeders are needed.
- the invention has for its object to provide a mold a molding box that is a mold made of bound molding sand has to be trained so that this on automatically working Molding machines can be used and horizontally in the usual way can be manufactured at the post-processing the pouring funnel and feeder as well no additional feeders to be placed on the mold can be and at which also an effective Venting of the cores is guaranteed.
- a Another object of the invention is a method to propose for the manufacture of such a mold.
- This task is for a mold of the type mentioned Art solved according to the invention in that the molding box in Area of its divisional level over at least one Part of the length and width of one side of the molding box Recess has that in the region of the recess the pouring funnel and the feeder open and that the feeder is formed in the casting mold within the sand mold is.
- the mold boxes for casting molds with bound molding sands can be made in a conventional way d. H. the frame of the molding box is placed on a model plate laid on, filled with sand and compacted. The Both mold box halves are made in the same way produced.
- the difference to conventional mold boxes consists of the feeder and the pouring funnel no longer formed on the open side of the mold frame is on the upper half of the molding box, but that the opening in front of the pouring funnel as well as the feeder relocated to the division level of the two mold box halves is. This means that the casting of the casting mold no longer as is the case with conventional molds with mold boxes The case is horizontal, but standing.
- the feeder and the pouring funnel can cast the mold box with no additional effort during production the mold can be molded with, so that any Post-processing is not necessary.
- the mold is poured standing, usually remains above of the casting a sufficiently large space to the required To accommodate volume for the feeder. This relatively large distance also allows the feeder to do so train that the required hydrostatic pressure for the feed is received.
- the cores with one end up through the Opening in the mold frame over the sand of the mold and if necessary, through the feeder to above the level of Pouring opening of the feeder arranged so that the core ventilation immediately over the pulled out ends of the core can be done.
- the molding box has in the division level, in which the feeder and the pouring funnel are arranged is a recess which in cross section V- or Can be U-shaped. This is advantageous Pouring the casting material in increasing casting, the Pouring channel opens below the casting and over the gate connected to it.
- a molded box is manufactured horizontally, i.e. H. the two halves of the molding box are made in the usual way produced, in contrast to the prior art Pouring funnel and the feeder right in the side of the opening of the molding box is also molded. Through this side The feeder as well as the pouring funnel can be arranged be produced in such a way that post-processing is no longer required.
- the molding boxes are then opened arranged on a roller conveyor and in such a way that the mold cavity points upwards. In this situation the Cores inserted, then one half of the mold over the other is laid in a known manner. In connection the finished casting mold is then turned through 90 °, see above that this now with the pouring opening up on a another now generally narrower roller conveyor is transported further.
- the molding box on the roller conveyor can remain.
- the two halves of the molding box will be then separated in a known manner, turned and the Molding process of the mold begins anew.
- the mold 1 to 4 is an embodiment of an inventive Casting mold 1 shown.
- the mold 1 is made from two mold halves, each mold half having one Form frame 4, which on one side in the Molding plane has a V-shaped recess 5.
- This V-shaped recess extends, in particular, from Fig. 4 can be seen over part of the width and Length of each mold box half 4.
- the pouring funnel 6 is with connected to a pouring spout 10, which extends to below the Pouring cavity 11 extends and via gates 12 with the Pouring cavity 11 is connected.
- two cores are in the casting cavity 13 inserted, which are provided with an extended end 14 are, which reaches through the feeder 9 and above of the feeder and the sand mold 8 ends. Because of this End 14, that above the food level and the sand mold ends up being an effective core vent as well Venting of the mold guaranteed.
- the recess 5 in the two mold halves 1 and 2 is when they are assembled, V-shaped in cross section educated. It is also conceivable to have a U-shaped one here Provide cutout.
- Each mold box half 4 is provided with running strips 15, with which the molding box on z.
- For the Each half of the molding box is laid on the core Roller conveyor transported and that with the opening of the casting cavity 11 up. This makes it easy to insert of the cores possible without this, as is the case with the moldless molds is the case with special Funds must be kept.
- These cores are in the half of the mold box inserted below while the other Mold box half on the lower horizontal only needs to be hung up. Following this the molding box is turned about its longitudinal axis by 90 °, so that the pouring funnel and the feeder are on top. The cast can then be done.
- the molding box can also be shaped upright, the molding box not being removed from the roller conveyor needs to be. Only the molding sand is needed here including the manufactured casting laterally to be pushed out of the mold frame 4.
- the embodiment 5 to 8 corresponds to the embodiment 1 to 4 with the difference that the feeder 9 is not, as in the embodiment 1 to 4, arranged within the sand mold 8 is and is only accessible via an opening 7, but that here the opening corresponds to the cross section of the feeder. Otherwise the arrangement of the cores is identical, here also the ends 14 of the cores 13 above the level of the maximum Level of the feeder 9 ends.
Abstract
Description
Die Erfindung betrifft eine Gießform sowie ein Verfahren zur Herstellung einer Gießform bestehend aus einem aus zwei Formkastenhälften gebildeten Formkasten, der Mittel für den Transport auf automatischen Formanlagen aufweist und eine gebundene Sandform aufnimmt, welche gegebenenfalls mit Kernen und mit einem Eingießtrichter sowie einem Speiser versehen ist.The invention relates to a casting mold and a method for the production of a casting mold consisting of one of two Mold box halves formed mold box, the means for the Has transport on automatic molding machines and a bonded sand mold, which, if necessary, with cores and provided with a pouring funnel and a feeder is.
Gießformen mit gebundenen Formsänden werden entweder mit Formkästen hergestellt, die aus zwei Formkastenhälften bestehen, wobei dieser Formkasten in der Regel rahmenförmig ausgebildet ist und an zwei seiner Stirnseiten mit Laufleisten versehen ist, mit denen er auf einer Rollenbahn einer automatischen Formanlage transportierbar ist. Dieser Formkasten gibt der in diesem befindlichen gebundenen Sandform die erforderliche Festigkeit, damit dieser ohne weiteres transportiert werden kann. Der Sand für die Gießform kann tongebunden sein, was eine kostengünstige Wiederaufbereitung des Formsandes gewährleistet. Casting molds with bound molding sands are either made with Molded boxes made of two mold box halves, this molding box is usually frame-shaped is formed and on two of its end faces with slats is provided with which he is on a roller conveyor automatic molding machine is transportable. This molding box gives the bound sand mold in it the required strength so that this easily can be transported. The sand for the mold can be clay-bound, which is an inexpensive reprocessing of the molding sand guaranteed.
Ferner sind kastenlose Gießformen bekannt, die in Abhängigkeit des Gußstückes aus einer Vielzahl von Einzelteilen zusammengesetzt sind, wobei diese Gießformen nicht mehr tongebunden, sondern chemisch gebunden sind, um eine ausreichende Festigkeit für ihre Hantierbarkeit und Abgießbarkeit zu erhalten. Diese chemisch gebundenen Sandformen erfordern aufwendige Maschinen zur Herstellung der Teilformen, der Kerne wie auch Maschinen, die diese Teile wiederum zu einer Gießform zusammenfügen. Abgesehen von dem hohen apparativen Aufwand, der hier betrieben werden muß, besteht ein weiterer Nachteil darin, daß der Sand nur aufwendig wiederaufzubereiten ist. Dies stellt neben der teuren Form- und Montagevorrichtung einen hohen Kostenfaktor dar.Furthermore, boxless molds are known, which are dependent of the casting from a variety of items these molds are no longer clay-bound, but are chemically bound to be sufficient Strength for their handling and pourability to obtain. These chemically bound sand forms require elaborate machines for producing the partial molds, the Cores as well as machines that turn these parts into one Put the mold together. Aside from the high apparatus There is another effort that must be made here Disadvantage in that the sand can only be reprocessed with great effort is. In addition to the expensive molding and assembly device represents a high cost factor.
Bekannt sind ferner kastenlose Grünsandformen, die aus einzelnen identischen quaderförmigen Blöcken aufgebaut sind, die auf zwei gegenüberliegenden Seiten jeweils einen Teil des Gießformhohlraumes aufweisen. Hierbei ist der Gießeinlauf wie auch der Speiser mit eingeformt. Diese Blöcke werden dann mit ihren Formhohlräumen gegeneinander geschoben, so daß diese sich zum einen gegenseitig ergänzen und abstützen. Der Formsand wird dabei von oben eingeschossen, was bedeutet, daß die im Schatten des Modells liegenden Formbereiche nicht die gleiche Verfestigung erhalten wie die übrigen Bereiche. Des weiteren kann der Speiser auch nur begrenzt in der Form vorgesehen werden und auch im wesentlichen nur seitlich des eigentlichen Formhohlraumes, was die Qualität des Speisers doch stark beschränkt. Durch das Einschießen des Formsandes wird darüber hinaus auch ein großer Verschleiß an Modellen erhalten, was das Verfahren teuer macht. Ein weiterer Nachteil besteht darin, daß die Kerne in eine seitlich gerichtete Gießform eingelegt werden müssen und dies in der zur Verfügung stehenden Taktzeit, was zum einen aufwendige Automaten erfordert und zum anderen eine gefährliche Handarbeit bedeutet. Ein wesentlicher Nachteil besteht weiter darin, daß derartige kastenlose Grünsandformen nicht für die Herstellung komplizierter Gußstücke, wie z.B. Motorblöcke oder Zylinderköpfe, insbesondere, wenn diese aus Aluminium bestehen, geeignet sind.Also known are boxless forms of green sand, which consist of individual identical cuboid blocks are constructed, the part on two opposite sides of the mold cavity. Here is the pouring spout as well as molded in the feeder. These blocks will be then pushed against each other with their mold cavities, so that they complement and support each other. The molding sand is shot from above, which means that they are in the shadow of the model Form areas do not get the same hardening as the remaining areas. The feeder can also only be limited in form and also essentially only to the side of the actual mold cavity, which severely limits the quality of the feeder. By injecting the molding sand is also a great wear on models received what the procedure makes expensive. Another disadvantage is that the Cores are placed in a side-facing mold must and this in the available cycle time, which on the one hand requires complex machines and on the other hand dangerous manual labor. An essential one Another disadvantage is that such boxless Green sand molds not for the production of complicated castings, such as. Engine blocks or cylinder heads, in particular, if they are made of aluminum, are suitable.
Formsand in Formkästen kann darüber hinaus nicht nur tongebunden sein, sondern ist auch wesentlich kostengünstiger in seiner Herstellung. Für die Herstellung eines derartigen Formkastens muß lediglich je eine Hälfte des Formkastens getrennt auf eine Modellplatte aufgelegt werden, wobei dann der Formkasten mit Sand gefüllt wird. Nach mechanischer Verdichtung des Formsandes ist die Gießformhälfte fertiggestellt. Diese wird dann horizontal liegend mit dem Formhohlraum nach oben gewendet, so daß Kerne eingelegt werden können. Die Formkästen werden zum Abgießen übereinander gelegt, wobei zuvor in die dann obere Formkastenhälfte die Gießformöffnung und der Speiser in den Formsand eingearbeitet werden muß. Dies geschieht vor dem Wenden des oberen Formkastens mit rotierenden Werkzeugen. Diese Formkästen werden dann liegend abgegossen, wobei hier nachteilig ist, daß für den Speiser in der Gießform nur ein relativ geringes Volumen verbleibt und zudem die Speisung der unten liegenden Gießformteile nicht immer optimal erfolgt.Molding sand in molding boxes can not only be clay-bound but is also much cheaper in its manufacture. For the production of such The molding box only needs one half of the molding box placed separately on a model plate, then the molding box is filled with sand. After mechanical The mold half is finished compacting the molding sand. This then lies horizontally with the mold cavity turned upwards so that cores are inserted can. The mold boxes are placed one above the other for casting, previously in the then upper mold box Mold opening and the feeder incorporated into the molding sand must become. This happens before turning the top one Molding box with rotating tools. These mold boxes are then poured horizontally, which is disadvantageous here that for the feeder in the mold only a relatively small one Volume remains and also the supply of the ones below Mold parts are not always optimal.
Bei den kastenlosen chemisch gebundenen Gießformen stellt es hingegen kein Problem dar, den Speiser wie auch den Eingießtrichter gleich mit in die Gießform einzuformen, wobei Speiser und Gießtrichter an der Seite der Gießform angeordnet werden, die für den Abguß des Gußstückes am vorteilhaftesten ist. Die Speisung des erstarrenden Gußstückes ist somit bei kastenlosen, chemisch gebundenen Gießformen gegenüber den Gießformen mit Formkästen wesentlich günstiger. Insbesondere kann hier auf die Maßnahme verzichtet werden, auf dem Formkasten zusätzlich noch einen Speiser aufzusetzen, um den für die Speisung erforderlichen hydrostatischen Druck zu erzeugen. Allerdings sind diese Gießformen nicht nur teuer in Material und Herstellung, sondern erfordern auch extrem hohe Anlageninvestitionen.In the case of the castless, chemically bound casting molds however, it is not a problem, the feeder as well as the pouring funnel to be molded into the mold, whereby The feeder and pouring funnel are arranged on the side of the casting mold be the most advantageous for the casting of the casting is. The feeding of the solidifying casting is thus compared to boxless, chemically bound casting molds the molds with mold boxes much cheaper. In particular, the measure can be dispensed with here. to place an additional feeder on the molding box, the hydrostatic required for the feed To generate pressure. However, these molds are not only expensive in material and manufacture, but require also extremely high plant investments.
Bei den kastenlosen Grünsandformen kann zwar der Eingießtrichter relativ problemlos mitgefertigt werden, jedoch bereitet die Ausbildung des Speisers Probleme, zumal der Speiser den Querschnitt verkleinert, der zum Einschießen des Sandes zur Verfügung steht. Für das Gießen von Aluminium sind derartige Gießformen weniger geeignet, zumal hier große wirkungsvolle Speiser benötigt werden.With the boxless green sand molds, the pouring funnel can can be produced relatively easily, but prepares the training of the feeder problems, especially the Speiser reduced the cross-section for shooting of the sand is available. For casting aluminum such molds are less suitable, especially here large effective feeders are needed.
Bei den kastenlosen Gießformen wie auch bei den Gießformen mit Formkästen stellt die Kernentlüftung ein wesentliches Problem dar, das bisher nicht zufriedenstellend gelöst ist.With the boxless molds as well as with the molds with molded boxes, the core ventilation is an essential Problem that has not yet been solved satisfactorily.
Der Erfindung liegt die Aufgabe zugrunde, eine Gießform mit einem Formkasten, der eine Form aus gebundenem Formsand aufweist, so auszubilden, daß diese auf automatisch arbeitenden Formanlagen einsetzbar ist und in üblicher Weise horizontal gefertigt werden kann, bei der auf die Nachbearbeitung des Eingießtrichters und des Speisers wie auch auf zusätzliche auf der Gießform aufzusetzende Speiser verzichtet werden kann und bei der darüber hinaus eine wirkungsvolle Entlüftung auch der Kerne gewährleistet ist. Eine weitere Aufgabe der Erfindung besteht darin, ein Verfahren für die Herstellung einer derartigen Gießform vorzuschlagen.The invention has for its object to provide a mold a molding box that is a mold made of bound molding sand has to be trained so that this on automatically working Molding machines can be used and horizontally in the usual way can be manufactured at the post-processing the pouring funnel and feeder as well no additional feeders to be placed on the mold can be and at which also an effective Venting of the cores is guaranteed. A Another object of the invention is a method to propose for the manufacture of such a mold.
Diese Aufgabe wird für eine Gießform der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß der Formkasten im Bereich seiner Teilungsebene eine sich über zumindest einen Teil der Länge wie Breite einer Seite des Formkastens erstreckende Ausnehmung aufweist, daß im Bereich der Ausnehmung der Eingießtrichter sowie der Speiser mündet und daß der Speiser innerhalb der Sandform in der Gießform ausgebildet ist.This task is for a mold of the type mentioned Art solved according to the invention in that the molding box in Area of its divisional level over at least one Part of the length and width of one side of the molding box Recess has that in the region of the recess the pouring funnel and the feeder open and that the feeder is formed in the casting mold within the sand mold is.
Die Formkästen für Gießformen mit gebundenen Formsänden können also in herkömmlicher Art und Weise hergestellt werden, d. h. der Rahmen des Formkastens wird auf eine Modellplatte aufgelegt, mit Sand abgefüllt und verdichtet. Die beiden Formkastenhälften werden in gleicher Art und Weise hergestellt. Der Unterschied zu den herkömmlichen Formkästen besteht darin, daß der Speiser und der Eingießtrichter nicht mehr auf der offenen Seite des Formrahmens ausgebildet ist und zwar auf der oberen Formkastenhälfte, sondern daß die Öffnung vor dem Gießtrichter wie auch der Speiser in die Teilungsebene der beiden Formkastenhälften verlegt ist. Dies bedingt, daß der Abguß der Gießform nicht mehr, wie dies bei herkömmlichen Gießformen mit Formkästen der Fall ist, horizontal liegend, sondern stehend erfolgt. Durch die Verlegung der Eingießöffnung wie auch des Speisers in die Formteilebene und den dadurch bedingten stehenden Abguß des Formkastens kann der Speiser und der Eingießtrichter ohne zusätzlichen Aufwand gleich bei der Herstellung der Gießform mit eingeformt werden, so daß hier jegliche Nachbearbeitung entfällt. Da darüber hinaus die Gießform stehend abgegossen wird, verbleibt in der Regel oberhalb des Gußstückes ein ausreichend großer Raum, um das erforderliche Volumen für den Speiser unterzubringen. Dieser relativ große Abstand ermöglicht es auch, den Speiser so auszubilden, daß der erforderliche hydrostatische Druck für die Speisung erhalten wird.The mold boxes for casting molds with bound molding sands can be made in a conventional way d. H. the frame of the molding box is placed on a model plate laid on, filled with sand and compacted. The Both mold box halves are made in the same way produced. The difference to conventional mold boxes consists of the feeder and the pouring funnel no longer formed on the open side of the mold frame is on the upper half of the molding box, but that the opening in front of the pouring funnel as well as the feeder relocated to the division level of the two mold box halves is. This means that the casting of the casting mold no longer as is the case with conventional molds with mold boxes The case is horizontal, but standing. By laying the pouring opening as well as the feeder into the molded part level and the resulting standing The feeder and the pouring funnel can cast the mold box with no additional effort during production the mold can be molded with, so that any Post-processing is not necessary. In addition, the mold is poured standing, usually remains above of the casting a sufficiently large space to the required To accommodate volume for the feeder. This relatively large distance also allows the feeder to do so train that the required hydrostatic pressure for the feed is received.
Gemäß einer vorteilhaften Ausführungsform der Erfindung sind die Kerne mit ihrem einen Ende nach oben durch die Öffnung in den Formrahmen über den Sand der Gießform und gegebenenfalls durch den Speiser bis über das Niveau der Eingießöffnung des Speisers angeordnet, so daß die Kernentlüftung unmittelbar über die herausgezogenen Enden des Kernes erfolgen kann. Hierdurch wird die Gefahr von Gußfehlern wesentlich herabgesetzt. Der Formkasten besitzt in der Teilungsebene, in der der Speiser und der Eingießtrichter angeordnet ist, eine Ausnehmung, die im Querschnitt V- oder U-förmig ausgebildet sein kann. Vorteilhaft erfolgt das Eingießen des Gießmaterials in steigendem Guß, wobei der Gießkanal unterhalb des Gußstückes mündet und über Anschnitt mit diesem verbunden ist.According to an advantageous embodiment of the invention are the cores with one end up through the Opening in the mold frame over the sand of the mold and if necessary, through the feeder to above the level of Pouring opening of the feeder arranged so that the core ventilation immediately over the pulled out ends of the core can be done. This increases the risk of casting errors significantly reduced. The molding box has in the division level, in which the feeder and the pouring funnel are arranged is a recess which in cross section V- or Can be U-shaped. This is advantageous Pouring the casting material in increasing casting, the Pouring channel opens below the casting and over the gate connected to it.
Die Herstellung eines Formkastens erfolgt liegend, d. h. die beiden Hälften des Formkastens werden in üblicher Weise hergestellt, wobei im Gegensatz zum Stand der Technik der Eingießtrichter und der Speiser gleich seitlich in der Öffnung des Formkastens mit eingeformt wird. Durch diese seitliche Anordnung kann der Speiser wie auch der Eingießtrichter derart hergestellt werden, daß eine Nachbearbeitung nicht mehr erforderlich ist. Die Formkästen werden dann auf einer Rollenbahn angeordnet und zwar derart, daß der Formhohlraum nach oben zeigt. In dieser Lage werden dann die Kerne eingelegt, wobei dann die eine Gießformhälfte über die andere in bekannter Art und Weise gelegt wird. Im Anschluß hieran wird die fertige Gießform um 90° gewendet, so daß diese nunmehr mit der Eingießöffnung nach oben auf einer weiteren nunmehr in der Regel schmaleren Rollenbahn weitertransportiert wird. In dieser Lage wird die Gießform abgegossen. Nach dem Erstarren der Gießform wird vorteilhaft in der aufrecht stehenden Form über einen Stempel der Formsand einschließlich dem Gußstück aus dem Formrahmen herausgedrückt, wobei der Formkasten auf der Rollenbahn verbleiben kann. Die beiden Hälften des Formkastens werden dann in bekannter Weise wieder getrennt, gewendet und der Abformvorgang der Gießform beginnt von neuem. A molded box is manufactured horizontally, i.e. H. the two halves of the molding box are made in the usual way produced, in contrast to the prior art Pouring funnel and the feeder right in the side of the opening of the molding box is also molded. Through this side The feeder as well as the pouring funnel can be arranged be produced in such a way that post-processing is no longer required. The molding boxes are then opened arranged on a roller conveyor and in such a way that the mold cavity points upwards. In this situation the Cores inserted, then one half of the mold over the other is laid in a known manner. In connection the finished casting mold is then turned through 90 °, see above that this now with the pouring opening up on a another now generally narrower roller conveyor is transported further. In this position, the mold poured. After the mold solidifies, it becomes advantageous in the upright form over a stamp of Molding sand including the casting from the molding frame pushed out, the molding box on the roller conveyor can remain. The two halves of the molding box will be then separated in a known manner, turned and the Molding process of the mold begins anew.
Ein Ausführungsbeispiel der Erfindung ist im folgenden anhand der Zeichnungen näher beschrieben. In diesen zeigen:
- Fig. 1
- einen Schnitt in der Teilungsebene eines Formkastens,
- Fig. 2
- zwei zu einer Gießform zusammengefügte Formkastenhälften gemäß Schnitt nach Linie 2-2 in Fig. 1,
- Fig. 3
- einen Schnitt nach Linie 3-3 in Fig. 1,
- Fig. 4
- eine Draufsicht auf einen Formkasten gemäß Fig. 1,
- Fig. 5
- einen Schnitt gemäß Fig. 1, jedoch mit einem Speiser, der bis zur Oberfläche der Gießform reicht,
- Fig. 6
- einen Schnitt nach Linie 6-6 in Fig. 5,
- Fig. 7
- einen Schnitt nach Linie 7-7 in Fig. 5 und
- Fig. 8
- eine Draufsicht auf Fig. 5.
- Fig. 1
- a section in the parting plane of a molding box,
- Fig. 2
- two molded box halves joined to form a casting mold according to the section along line 2-2 in FIG. 1,
- Fig. 3
- a section along line 3-3 in Fig. 1,
- Fig. 4
- 2 shows a plan view of a molding box according to FIG. 1,
- Fig. 5
- 2 shows a section according to FIG. 1, but with a feeder that extends to the surface of the mold
- Fig. 6
- 5 shows a section along line 6-6 in FIG. 5,
- Fig. 7
- a section along line 7-7 in Fig. 5 and
- Fig. 8
- 5 shows a plan view of FIG. 5.
In den Fig. 1 bis 4 ist eine Ausführungsform einer erfindungsgemäßen
Gießform 1 dargestellt. Die Gießform 1 besteht
aus zwei Gießformhälften, wobei jede Gießformhälfte einen
Formrahmen 4 aufweist, der an seiner einer Seite in der
Formteilebene eine V-förmige Aussparung 5 aufweist. Diese
V-förmige Aussparung erstreckt sich, wie insbesondere aus
Fig. 4 ersichtlich ist, über einen Teil der Breite und der
Länge jeder Formkastenhälfte 4. Hierdurch wird eine Öffnung
auf den Formsand im Formkasten freigegeben, wobei im Bereich
der Aussparung 5 der Eingießtrichter 6 und die Öffnung
7 für den im Inneren des gebundenen Sandes 8 angeordneten
Speisers 9 angebracht ist. Der Gießtrichter 6 ist mit
einem Gießeinlauf 10 verbunden, der sich bis unterhalb des
Gießhohlraumes 11 erstreckt und über Anschnitte 12 mit dem
Gießhohlraum 11 verbunden ist.1 to 4 is an embodiment of an inventive
Casting mold 1 shown. The mold 1 is made
from two mold halves, each mold half having one
In den Gießhohlraum sind im Ausführungsbeispiel zwei Kerne
13 eingelegt, die mit einem verlängerten Ende 14 versehen
sind, welches jeweils durch den Speiser 9 greift und oberhalb
des Speisers und der Sandform 8 endet. Durch dieses
Ende 14, das oberhalb des Speiserniveaus und der Sandgießform
endet, ist eine effektive Kernentlüftung wie auch eine
Entlüftung der Gießform gewährleistet.In the exemplary embodiment, two cores are in the
Die Aussparung 5 in den beiden Gießformhälften 1 und 2 ist,
wenn diese zusammengesetzt sind, im Querschnitt V-förmig
ausgebildet. Es ist auch denkbar, hier einen U-förmigen
Ausschnitt vorzusehen.The
Jede Formkastenhälfte 4 ist mit Laufleisten 15 versehen,
mit denen der Formkasten auf z. B. Rollenbahnen horizontal
liegend transportiert werden kann, aber auch auf entsprechend
schmaler angeordneten Rollenbahnen stehend. Für die
Kerneinlegung wird jede Formkastenhälfte liegend auf der
Rollenbahn transportiert und zwar mit der Öffnung des Gießhohlraumes
11 nach oben. Hierdurch ist eine einfache Einlegung
der Kerne möglich, ohne daß diese, wie dies bei den
formkastenlosen Gießformen der Fall ist, mit besonderen
Mitteln gehalten werden müssen. Diese Kerne werden in die
unten liegende Formkastenhälfte eingelegt, während die andere
Formkastenhälfte auf die untere horizontal liegende
lediglich aufgelegt zu werden braucht. Im Anschluß hieran
wird der Formkasten um seine Längsachse um 90° gewendet, so
daß der Gießtrichter und der Speiser oben liegen. Der Abguß
kann dann durchgeführt werden. Each
Das Ausformen des Formkastens kann gleichfalls stehend erfolgen,
wobei der Formkasten nicht von der Rollenbahn abgenommen
zu werden braucht. Hier braucht lediglich der Formsand
einschließlich des hergestellten Gußstückes seitlich
aus dem Formrahmen 4 herausgedrückt zu werden. Das Ausführungsbeispiel
nach den Fig. 5 bis 8 entspricht dem Ausführungsbeispiel
nach den Fig. 1 bis 4 mit dem Unterschied,
daß der Speiser 9 nicht, wie in dem Ausführungsbeispiel
nach den Fig. 1 bis 4, innerhalb der Sandform 8 angeordnet
ist und nur über eine Öffnung 7 zugänglich ist, sondern daß
hier die Öffnung dem Querschnitt des Speiser entspricht.
Ansonsten ist die Anordnung der Kerne identisch, wobei hier
auch die Enden 14 der Kerne 13 oberhalb des Niveaus der maximalen
Füllstandshöhe des Speisers 9 enden.The molding box can also be shaped upright,
the molding box not being removed from the roller conveyor
needs to be. Only the molding sand is needed here
including the manufactured casting laterally
to be pushed out of the
Claims (9)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19720056A DE19720056A1 (en) | 1997-05-14 | 1997-05-14 | Casting mold for automatically working molding plants and process for the production of the casting molds |
| DE19720056 | 1997-05-14 | ||
| US09/256,169 US6244328B1 (en) | 1997-05-14 | 1999-02-23 | Mold for automatically working mold systems and a process for the manufacture of the molds |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0878252A1 true EP0878252A1 (en) | 1998-11-18 |
| EP0878252B1 EP0878252B1 (en) | 2000-04-12 |
Family
ID=26036523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98103795A Expired - Lifetime EP0878252B1 (en) | 1997-05-14 | 1998-03-04 | Mould for automatic moulding plant and method for producing such a mould |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6244328B1 (en) |
| EP (1) | EP0878252B1 (en) |
| AT (1) | ATE191664T1 (en) |
| DE (2) | DE19720056A1 (en) |
| ES (1) | ES2145634T3 (en) |
| PL (1) | PL326238A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001028712A1 (en) * | 1999-10-15 | 2001-04-26 | Loramendi, S.A. | Metal casting method in green sand molds and blocking device for the runner |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001002113A1 (en) * | 1999-07-02 | 2001-01-11 | International Engine Intellectual Property Company, Llc. | Casting method and apparatus |
| JP3592251B2 (en) * | 2001-03-30 | 2004-11-24 | 日信工業株式会社 | Reduction casting method, reduction casting apparatus and molding die used therefor |
| DE102006058145A1 (en) | 2006-12-09 | 2008-06-12 | Ksm Castings Gmbh | Method for processing, in particular casting, a material, casting mold for carrying out the method and articles produced by the method or in the casting mold |
| US8387678B1 (en) * | 2011-11-18 | 2013-03-05 | General Electric Company | Sensor aided direct gating for metal casting |
| CN105382205B (en) * | 2015-12-07 | 2017-06-13 | 大连金河铸造有限公司 | The modified technique of fuel tank cast casting |
| CN107999699B (en) * | 2018-01-24 | 2023-06-02 | 江西力天机械有限公司 | Lost foam casting die |
| CN108405813A (en) * | 2018-05-10 | 2018-08-17 | 江苏凌特精密机械有限公司 | A kind of middle case class product mold |
| CN110681846A (en) * | 2019-09-30 | 2020-01-14 | 山西江淮重工有限责任公司 | Horizontal modeling vertical differential pressure pouring device and pouring method for aluminum alloy special-shaped structural part |
| PL241319B1 (en) * | 2020-11-02 | 2022-09-05 | Lothar Thoni | Hybrid casting mold and method of making a hybrid casting mold, especially for the production of castings from metal alloys |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2652657A1 (en) * | 1975-11-21 | 1977-06-02 | John Workman | FOUNDRY MOLDING DEVICE |
| JPS55106656A (en) * | 1979-02-09 | 1980-08-15 | Hitachi Metals Ltd | Mold |
| JPS55106658A (en) * | 1979-02-09 | 1980-08-15 | Hitachi Metals Ltd | Mold of pipe joint |
| WO1991012104A1 (en) * | 1990-02-16 | 1991-08-22 | Combustion Engineering, Inc. | Vertical pour casting process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2579494A1 (en) * | 1985-03-28 | 1986-10-03 | Fouquet Jean Paul | Method for casting alloyed steels and alloys, by gravity, in a permanent mould, permitting the manufacture of a finished metal product of the ingot type, of radio soundness and in a small quantity |
-
1997
- 1997-05-14 DE DE19720056A patent/DE19720056A1/en not_active Withdrawn
-
1998
- 1998-03-04 DE DE59800122T patent/DE59800122D1/en not_active Expired - Lifetime
- 1998-03-04 AT AT98103795T patent/ATE191664T1/en not_active IP Right Cessation
- 1998-03-04 EP EP98103795A patent/EP0878252B1/en not_active Expired - Lifetime
- 1998-03-04 ES ES98103795T patent/ES2145634T3/en not_active Expired - Lifetime
- 1998-05-11 PL PL98326238A patent/PL326238A1/en unknown
-
1999
- 1999-02-23 US US09/256,169 patent/US6244328B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2652657A1 (en) * | 1975-11-21 | 1977-06-02 | John Workman | FOUNDRY MOLDING DEVICE |
| JPS55106656A (en) * | 1979-02-09 | 1980-08-15 | Hitachi Metals Ltd | Mold |
| JPS55106658A (en) * | 1979-02-09 | 1980-08-15 | Hitachi Metals Ltd | Mold of pipe joint |
| WO1991012104A1 (en) * | 1990-02-16 | 1991-08-22 | Combustion Engineering, Inc. | Vertical pour casting process |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 004, no. 154 (M - 038) 28 October 1980 (1980-10-28) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001028712A1 (en) * | 1999-10-15 | 2001-04-26 | Loramendi, S.A. | Metal casting method in green sand molds and blocking device for the runner |
| US6659163B2 (en) | 1999-10-15 | 2003-12-09 | Loramendi, S.A. | Method for metal casting in green-sand molds and casting gutter sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19720056A1 (en) | 1998-11-19 |
| PL326238A1 (en) | 1998-11-23 |
| ES2145634T3 (en) | 2000-07-01 |
| EP0878252B1 (en) | 2000-04-12 |
| US6244328B1 (en) | 2001-06-12 |
| ATE191664T1 (en) | 2000-04-15 |
| DE59800122D1 (en) | 2000-05-18 |
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