EP1106281A1 - Core blowing method and apparatus - Google Patents
Core blowing method and apparatus Download PDFInfo
- Publication number
- EP1106281A1 EP1106281A1 EP00126613A EP00126613A EP1106281A1 EP 1106281 A1 EP1106281 A1 EP 1106281A1 EP 00126613 A EP00126613 A EP 00126613A EP 00126613 A EP00126613 A EP 00126613A EP 1106281 A1 EP1106281 A1 EP 1106281A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- core
- core box
- molding material
- shooting
- shooting method
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/08—Moulds provided with means for tilting or inverting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C13/00—Moulding machines for making moulds or cores of particular shapes
- B22C13/12—Moulding machines for making moulds or cores of particular shapes for cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/006—Pressing by atmospheric pressure, as a result of vacuum generation or by gas or liquid pressure acting directly upon the material, e.g. jets of compressed air
Definitions
- the invention relates to a core shooting method for the production of molded parts from delayed curing molding materials according to the preamble of the claim 1 and a device suitable for carrying out the method.
- Delayed curing molding materials such as concrete
- Methods produced by the extrusion process Disadvantageous this method is that protruding, or recessed Contours of the molding to be manufactured only due to the process can be trained in the production direction. However, this leads to a very limited design freedom in the design of the to be manufactured Molded body.
- the patent DE 29 53 668 shows a blow molding machine in which a Core box is attached to a table, its drive for turning is used relative to the horizontal axis.
- the object is achieved in that a core shooting method is applied to delayed curing molding materials.
- molded articles to create from delayed curing molding materials that their geometric design and shape a greater freedom of design enable.
- molded articles delayed curing molding materials to create the protruding, or recessed contours freely in all axes and Can have levels or directions.
- the core shooting device shown in Figure 1 comprises a shooting device 1, under which a molding device 2 is positioned, which one Core box.
- the shaping device 2 is over an axis of rotation 3 pivotally attached.
- the invention is to be illustrated using the example of the production of a shaped concrete body, in particular a roof tile.
- the molding material base concrete is placed in a storage container filled on the core shooter.
- the molding material falls into the sand cylinder of the core shooter.
- the shooting head which is a transition between the sand cylinder and the rough outer contour of the core box forms.
- the shooting head plate is attached under the shooting head Openings coincide with the bullet holes of the core box.
- the core box with the main division level is for shooting in the vertical direction under the shooting head.
- the shooting head is now with brought into contact with the core box. This is done either by lifting the core box to the shooting head or by lowering the Shooting head on the core box.
- the one used for the delayed curing molding compound Pressure is preferably at least 7 bar. Is particularly preferred an outlet pressure of 8.5 to 10 bar. However, higher pressures can also be used be used.
- the occurring air mass flow fluidizes the flowing concrete and forms a two-phase flow from compressed air and concrete.
- the outlet pressure is particularly expedient for the process and the associated short filling time.
- the high kinetic energy, with which the molding material is entered into the core box ensures sufficient Compression of the fitting.
- the high shooting pressures of preferably more than 7 bar ensure overcoming the delayed curing molding materials, such as concrete, existing higher binding forces, that of the contour sharpness of the fitting and the necessary Prevent compression of the molding material in the core box.
- the high This results in binding forces between the individual molding material particles the high humidity of the delayed curing molding materials, such as concrete.
- the flowability of concrete mixes much less than the flowability of the foundry molding materials processed according to the state of the art with the core shooting method become.
- the longest Expansion of the molding to be manufactured in the preferred embodiment of the invention lie in the direction of the inflowing molding material should. This results in the vertical shooting position, which ensures that the molding material with the least possible number of directional changes into the most distant form areas can reach.
- the main division level does not necessarily have to be aligned vertically anyway, it is particularly practical with regard to the following Manufacturing steps.
- the longest dimension not necessarily aligned in the vertical to the shooting direction and the main division plane should not be vertical. In such a case it already has the result is a high outlet pressure of preferably more than 7 bar, that the delayed curing molding compound can be processed.
- At Moldings with a complicated geometry have the vertical orientation the longest extent of the core box and the main division level of the core box, however, the advantages mentioned above. Die the molding material Air is transported through nozzles and over a defined column dissipated.
- the surface of the part to be manufactured is in the area of the entry opening Fitting usually uneven.
- the area is in a leveling station the entry opening by pressing in a correspondingly shaped one Contour part smoothed in the form of a contoured stamp and densified.
- To absorb the internal forces in the core box in the Shooting and leveling station can the core box parts by hydraulic-mechanical operated clamping devices kept tightly closed become. After removing the contour part from the entry area the core box is moved to the removal station.
- the core shooter has means that the Core box for removing the molded part essentially by 90 ° tilts.
- the core box is tilted before the molded body is removed significant with regard to the hardening behavior of the material to be removed Shaped body made of delayed curing molding compounds.
- the usual Molded materials processed with core shooting processes can be exposed to heat and / or flow through with a process gas within seconds or cured a maximum of a few minutes before going to the core box be removed. This causes the cores to separate, i.e. H. when opening the core box and when removing it from the core box, easy to use.
- the molding compound hardens within hours and the Green stability, i.e. the strength before a chemical or physical Hardening, does not allow direct handling.
- a carrier is inserted into the core box as support.
- the Dachstein in the preferred embodiment of the invention Vertical procedure.
- the still closed core box is now tilted and essentially brought into the horizontal position so that the flat area the roof tile is supported on the entire surface by the beam and, lying on this, can be removed.
- a removal device like a robot or carrier, the fitting carrier with the one on top Can take fitting. This has the consequence that the still Uncured concrete does not fall off the beam when the Dachstein is removed from the core box.
- a new shaped part carrier is transferred from the release agent into the core box inserted.
- the core box is closed and in front of respectively tilted back to the vertical during the process to the shooting station.
- the core box in its Interior further shaping components for the shaping of Have cavities in the molded body.
- the process steps can be carried out in parallel to increase productivity be carried out in the various machine stations.
- the core boxes can be transported via a rotary indexing table, the one transport between the shooting station, a leveling station and a sampling station.
- the shooting, leveling and removal can be done on the same position.
- Those to carry out these procedural steps necessary device components are included introduced this working position.
- the procedure after However, the rotary cycle or transfer principle is the preferred one.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft ein Kernschießverfahren zur Fertigung von Formteilen aus verzögert härtenden Formstoffen nach dem Oberbegriff des Anspruchs 1 und eine für die Durchführung des Verfahrens geeignete Vorrichtung.The invention relates to a core shooting method for the production of molded parts from delayed curing molding materials according to the preamble of the claim 1 and a device suitable for carrying out the method.
Verzögert aushärtende Formstoffe, wie Beton, werden nach konventionellen Methoden nach dem Strangpreßverfahren hergestellt. Nachteilig an diesem Verfahren ist, dass hervorspringende, beziehungsweise zurückspringende Konturen des zu fertigenden Formstückes prozeßbedingt nur in Produktionsrichtung ausgebildet werden können. Dies führt jedoch zu einer sehr beschränkten Gestaltungsfreiheit bei der Formgebung der herzustellenden Formkörper.Delayed curing molding materials, such as concrete, are replaced by conventional ones Methods produced by the extrusion process. Disadvantageous this method is that protruding, or recessed Contours of the molding to be manufactured only due to the process can be trained in the production direction. However, this leads to a very limited design freedom in the design of the to be manufactured Molded body.
Aus der Gießereitechnik sind auch andere Verfahren und Vorrichtungen bekannt, die für nicht verzögert aushärtende Formstoffe eingesetzt werden.Other processes and devices are also found in foundry technology known that are used for non-delayed curing molding materials.
So zeigt die Patentschrift DE 29 53 668 eine Blasmaschine, bei der ein Kernkasten auf einem Tisch befestigt wird, dessen Antrieb zum Wenden relativ zur Horizontalachse verwendet wird.For example, the patent DE 29 53 668 shows a blow molding machine in which a Core box is attached to a table, its drive for turning is used relative to the horizontal axis.
Aus der Patentschrift DE 33 39 941 A1 ist ein Verfahren und eine Vorrichtung zur Herstellung von aus zwei Formhälften bestehenden kastenlosen Gießformen bekannt, bei denen mittels eines ersten Modells in einem ersten Formkasten die eine Formhälfte hergestellt und nach Entfernen dieses Modells in einen zweiten Formkasten geschoben wird, der um 180° gewendet wird.From the patent DE 33 39 941 A1 is a method and an apparatus for the production of boxless consisting of two mold halves Casting molds known, in which by means of a first model in one first mold box which made a mold half and after removal this model is pushed into a second molding box, which is turned through 180 ° is turned.
Die Patentschrift EP 732 977 B1 zeigt eine Vorrichtung, bei der die Entnahme der Kerne außerhalb des eigentlichen Arbeitsbereiches der Kern-schießvorrichung möglich ist.The patent specification EP 732 977 B1 shows a device in which the removal the cores outside the actual work area of the core shooting device is possible.
Es ist die Aufgabe der Erfindung, ein Verfahren zu schaffen, mit dem verzögert aushärtende Formstoffe zu Formteilen gefertigt werden können, die in alle Achsen und Ebenen hervorstehende und/ oder zurückspringende Konturen aufweisen können.It is the object of the invention to provide a method with which decelerates curing molding materials can be made into molded parts that protruding and / or receding in all axes and planes Can have contours.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass ein Kernschießverfahren auf verzögert aushärtende Formstoffe angewendet wird.According to the invention, the object is achieved in that a core shooting method is applied to delayed curing molding materials.
Unter einem verzögert aushärtenden Formstoff im Sinne der Erfindung ist ein Formstoff zu verstehen, der über einen Zeitraum insbesondere von 15 Minuten bis 8 Stunden aushärtet. Beispielhaft können Beton oder Kalt-harzbindersysteme genannt werden.Under a delayed curing molding material in the sense of the invention to understand a molding material that over a period of 15 Cures for up to 8 hours. Examples include concrete or cold resin binder systems to be named.
Mit dem erfindungsgemäßen Verfahren ist es nunmehr möglich, Formkörper aus verzögert aushärtenden Formstoffen zu schaffen, die bezüglich ihrer geometrischen Ausbildung und Formgebung eine größere Gestaltungsfreiheit ermöglichen. Insbesondere ist es möglich, Formkörper aus verzögert aushärtenden Formstoffen zu schaffen, die hervorstehende, beziehungsweise zurückspringende Konturen frei in allen Achsen und Ebenen, beziehungsweise Richtungen, aufweisen können.With the method according to the invention it is now possible to use molded articles to create from delayed curing molding materials that their geometric design and shape a greater freedom of design enable. In particular, it is possible to make molded articles delayed curing molding materials to create the protruding, or recessed contours freely in all axes and Can have levels or directions.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben. Advantageous developments of the invention are in the subclaims specified.
Die Zeichnungen zeigen beispielhaft Einzelheiten einer für die Durchführung des Verfahrens geeigneten Vorrichtung.The drawings show examples of details of one for implementation device suitable for the method.
Es zeigt:
- Fig.1:
- eine Ansicht einer Kernschießvorrichtung mit schwenkbarer Formeinrichtung.
- Fig.2:
- einen Verriegelungsmechanismus
- Fig.3:
- einen Querschnitt der in Figur 1 und 2 dargestellten Vorrichtung.
- Fig.1:
- a view of a core shooter with pivotable molding device.
- Fig. 2:
- a locking mechanism
- Fig. 3:
- a cross section of the device shown in Figures 1 and 2.
Die in Figur 1 dargestellte Kernschießvorrichtung umfaßt eine Schießein-richtung
1, unter der eine Formeinrichtung 2 positioniert ist, welche einen
Kernkasten aufnimmt. Die Formeinrichtung 2 ist über eine Drehachse 3
schwenkbar angebracht.The core shooting device shown in Figure 1 comprises a shooting device
1, under which a
In Figur 2 ist die Drehachse 3 dargestellt, die einen Verriegelungsmechanismus
4 aufweist.In Figure 2, the axis of rotation 3 is shown, the
Im Folgenden soll die Erfindung am Beispiel der Herstellung eines Be-tonformkörpers, insbesondere eines Dachsteins, erläutert werden.In the following, the invention is to be illustrated using the example of the production of a shaped concrete body, in particular a roof tile.
Zu Beginn wird die Formstoffgrundmasse Beton in einen Vorratsbehälter auf der Kernschießvorrichtung gefüllt. Durch Öffnen eines Verschlusses fällt der Formstoff in den Sandzylinder der Kernschießvorrichtung. Unterhalb des Sandzylinders befindet sich der Schießkopf, der einen Übergang zwischen dem Sandzylinder und der groben Außenkontur des Kernkastens bildet. Unter dem Schießkopf ist die Schießkopfplatte befestigt, deren Öffnungen mit den Einschußöffnungen des Kernkastens übereinstimmt. Zum Schießen steht der Kemkasten mit der Hauptteilungsebene in vertikaler Richtung unter dem Schießkopf. Der Schießkopf wird nun mit dem Kernkasten in Kontakt gebracht. Dies geschieht entweder durch Anheben des Kernkastens an den Schießkopf oder durch Absenken des Schießkopfes auf den Kernkasten. Durch Öffnen des Schußventils der Kernschießvorrichtung wird schlagartig ein Druckluftreservoir der Kernschießvorrichtung über eine Schießeinheit in Richtung des Kernkastens entspannt. Der für die verzögert aushärtende Formmasse verwendete Druck beträgt dabei bevorzugt mindestens 7 bar. Besonders bevorzugt ist ein Ausgangsdruck von 8,5 bis 10 bar. Jedoch können auch höhere Drükke eingesetzt werden. Der auftretende Luftmassenstrom fluidisiert den durchströmenden Beton und bildet eine Zweiphasenströmung aus Druckluft und Beton. In diesem Zusammenhang ist auch die Verwendung eines Sandzylinders von besonderer Bedeutung, da dessen seitliche Lufteintrittsöffnungen erforderlich sind, um eine ausreichende Verflüssigung des Betons oder eines anderen verzögert aushärtenden Formstoffes zu erreichen. Besonders zweckmäßig für das Verfahren ist der Ausgangsdruck und die damit verbundene kurze Füllzeit. Die hohe kinetische Energie, mit der der Formstoff in den Kernkasten eingetragen wird, sichert eine ausreichende Verdichtung des Formstücks. Die hohen Schießdrücke von vorzugsweise mehr als 7 bar gewährleisten eine Überwindung der bei verzögert aushärtenden Formstoffen, wie Beton, vorhandenen höheren Bindekräfte, die der Konturenschärfe des Formstückes und der notwendigen Verdichtung des Formstoffes im Kernkasten entgegenstehen. Die hohen Bindekräfte zwischen den einzelnen Formstoffpartikeln sind eine Folge der hohen Feuchtigkeit der verzögert aushärtenden Formstoffe, wie Beton. Als Folge dieser Bindekräfte ist die Fließfähigkeit von Betonmischungen wesentlich geringer als die Fließfähigkeit der Gießereiformstoffe, die nach dem Stand der Technik mit dem Kernschießverfahren verarbeitet werden. Die verringerte Fließfähigkeit der verzögert aushärtenden Formmassen hat neben erhöhtem Einschießdruck zur Folge, dass die längste Ausdehnung des zu fertigenden Formstückes in der bevorzugten Ausführungsform der Erfindung in Richtung des einströmenden Formstoffes liegen soll. Daraus resultiert die vertikale Schießposition , die gewährleistet, dass der Formstoff mit der geringst möglichen Zahl von Richtungsumlen-kungen in die am weitesten von der Einschußöffnung entfernten Formbe-reiche gelangen kann.At the beginning, the molding material base concrete is placed in a storage container filled on the core shooter. By opening a lock the molding material falls into the sand cylinder of the core shooter. Below of the sand cylinder is the shooting head, which is a transition between the sand cylinder and the rough outer contour of the core box forms. The shooting head plate is attached under the shooting head Openings coincide with the bullet holes of the core box. The core box with the main division level is for shooting in the vertical direction under the shooting head. The shooting head is now with brought into contact with the core box. This is done either by lifting the core box to the shooting head or by lowering the Shooting head on the core box. By opening the shot valve of the Core shooter suddenly becomes a compressed air reservoir of the core shooter via a shooting unit towards the core box relaxed. The one used for the delayed curing molding compound Pressure is preferably at least 7 bar. Is particularly preferred an outlet pressure of 8.5 to 10 bar. However, higher pressures can also be used be used. The occurring air mass flow fluidizes the flowing concrete and forms a two-phase flow from compressed air and concrete. In this context, the use of a Sand cylinders of particular importance because of their side air inlet openings are required to ensure sufficient liquefaction of the To achieve concrete or another delayed curing molding material. The outlet pressure is particularly expedient for the process and the associated short filling time. The high kinetic energy, with which the molding material is entered into the core box ensures sufficient Compression of the fitting. The high shooting pressures of preferably more than 7 bar ensure overcoming the delayed curing molding materials, such as concrete, existing higher binding forces, that of the contour sharpness of the fitting and the necessary Prevent compression of the molding material in the core box. The high This results in binding forces between the individual molding material particles the high humidity of the delayed curing molding materials, such as concrete. As a result of these binding forces, the flowability of concrete mixes much less than the flowability of the foundry molding materials processed according to the state of the art with the core shooting method become. The reduced flowability of the delayed curing molding compounds in addition to increased injection pressure, the longest Expansion of the molding to be manufactured in the preferred embodiment of the invention lie in the direction of the inflowing molding material should. This results in the vertical shooting position, which ensures that the molding material with the least possible number of directional changes into the most distant form areas can reach.
In einer bevorzugten Ausführungsform ist, verbunden mit der vertikalen Ausrichtung der längsten Ausdehnung des Formstückes, auch eine vertikale Ausrichtung der Hauptteilungsebene des Kernkastens gegeben. Jedoch muß die Hauptteilungsebene nicht zwingend vertikal ausgerichtet sein, jedenfalls ist sie besonders praktikabel im Hinblick auf die folgenden Fertigungsschritte. Bei einfachen Formen muß die längste Ausdehnung nicht zwingend in der zur Einschießrichtung Vertikalen ausgerichtet und die Hauptteilungsebene nicht vertikal sein. In einem solchen Fall hat bereits der hohe Ausgangsdruck von vorzugsweise mehr als 7 bar die Folge, dass die verzögert aushärtende Formmasse verarbeitet werden kann. Bei Formteilen mit komplizierter Geometrie haben die vertikale Ausrichtung der längsten Ausdehnung des Kernkastens und der Hauptteilungsebene des Kernkastens jedoch die oben genannten Vorteile. Die den Formstoff transportierende Luft wird durch Düsen und über eine definierte Spalte abgeführt.In a preferred embodiment, is connected to the vertical Alignment of the longest dimension of the fitting, also a vertical one Orientation of the main division level of the core box given. However the main division level does not necessarily have to be aligned vertically anyway, it is particularly practical with regard to the following Manufacturing steps. For simple shapes, the longest dimension not necessarily aligned in the vertical to the shooting direction and the main division plane should not be vertical. In such a case it already has the result is a high outlet pressure of preferably more than 7 bar, that the delayed curing molding compound can be processed. At Moldings with a complicated geometry have the vertical orientation the longest extent of the core box and the main division level of the core box, however, the advantages mentioned above. Die the molding material Air is transported through nozzles and over a defined column dissipated.
Im Bereich der Einschußöffnung ist die Oberfläche des zu fertigenden Formstücks in der Regel uneben. In einer Nivellierstation wird der Bereich der Einschußöffnung daher durch Einpressen eines entsprechend ausgeformten Konturenteils in Form eines konturierten Stempels geglättet und nachverdichtet. Zur Aufnahme der Innenkräfte im Kernkasten in der Schieß- und Nivellierstation können die Kernkastenteile durch hydraulischmechanisch betriebene Spannvorrichtungen dicht geschlossen gehalten werden. Nach dem Entfernen des Konturenteils aus dem Einschußbereich wird der Kernkasten zur Entnahmestation gefahren.The surface of the part to be manufactured is in the area of the entry opening Fitting usually uneven. The area is in a leveling station the entry opening by pressing in a correspondingly shaped one Contour part smoothed in the form of a contoured stamp and densified. To absorb the internal forces in the core box in the Shooting and leveling station can the core box parts by hydraulic-mechanical operated clamping devices kept tightly closed become. After removing the contour part from the entry area the core box is moved to the removal station.
Erfindungsgemäß verfügt die Kernschießvorrichtung über Mittel, die den Kernkasten für die Entnahme des Formteils im Wesentlichen um 90° kippt. Das Kippen des Kernkastens vor der Entnahme des Formkörpers ist bedeutsam im Hinblick auf das Aushärteverhalten des zu entnehmenden Formkörpers aus verzögert aushärtenden Formmassen. Die üblicherweise mit Kernschießverfahren verarbeiteten Formstoffe können durch Wärme und / oder Durchströmen mit einem Prozeßgas innerhalb von Sekunden oder maximal wenigen Minuten ausgehärtet werden, bevor sie dem Kernkasten entnommen werden. Dadurch sind die Kerne beim Trennen, d. h. beim Öffen des Kernkastens und beim Entnehmen aus dem Kernkasten, gut zu handhaben. Eine Betonmischung oder eine andere verzögert aushärtende Formmasse härtet jedoch innerhalb von Stunden aus und die Grünstandfestigkeit, d.h. die Festigkeit vor einer chemischen oder physikalischen Härtung, erlaubt keine direkte Handhabung.According to the core shooter has means that the Core box for removing the molded part essentially by 90 ° tilts. The core box is tilted before the molded body is removed significant with regard to the hardening behavior of the material to be removed Shaped body made of delayed curing molding compounds. The usual Molded materials processed with core shooting processes can be exposed to heat and / or flow through with a process gas within seconds or cured a maximum of a few minutes before going to the core box be removed. This causes the cores to separate, i.e. H. when opening the core box and when removing it from the core box, easy to use. A concrete mix or other delayed curing However, the molding compound hardens within hours and the Green stability, i.e. the strength before a chemical or physical Hardening, does not allow direct handling.
In einer besonders bevorzugten Ausführungsform der Erfindung wird zur Herstellung der Formkörper, wie in diesem Beispiel der Dachsteine, daher ein Träger als Unterstützung in den Kernkasten eingelegt. Wie oben ausgeführt, steht der Dachstein in der bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens in der Vertikalen. In diesem Beispiel befinden sich sowohl die Längsausdehnung des Dachsteins als auch die Hauptteilungsebene des Kernkastens in der Vertikalen. Erfindungsgemäß wird der noch geschlossene Kernkasten nunmehr gekippt und im Wesentlichen in die horizontale Position gebracht, so dass der flächige Bereich des Dachsteins auf der gesamten Fläche vom Träger abgestützt wird und, auf diesem liegend, entnommen werden kann. Nach Abheben des Kernkastenoberteils mittels einer entsprechenden maschinenseitigen Hubvorrichtung, hebt eine Ausstoßvorrichtung durch das Kernkastenunterteil hindurch den Formstückträger soweit an, dass eine Entnahmevorrichtung, wie ein Roboter oder Transporteur, den Formstückträger mit dem daraufliegenden Formstück entnehmen kann. Dies hat zur Folge, dass die noch nicht ausgehärtete Betonmasse nicht vom Träger herunterfällt, wenn der Dachstein aus dem Kernkasten entnommen wird.In a particularly preferred embodiment of the invention Production of the moldings, as in this example of the roof tiles, therefore a carrier is inserted into the core box as support. As stated above is the Dachstein in the preferred embodiment of the invention Vertical procedure. In this example both the length of the roof tile and the Main division plane of the core box in the vertical. According to the invention the still closed core box is now tilted and essentially brought into the horizontal position so that the flat area the roof tile is supported on the entire surface by the beam and, lying on this, can be removed. After lifting off the core box top by means of a corresponding machine-side lifting device, lifts an ejector through the core box base the fitting carrier so far that a removal device, like a robot or carrier, the fitting carrier with the one on top Can take fitting. This has the consequence that the still Uncured concrete does not fall off the beam when the Dachstein is removed from the core box.
Nach dem Reinigen des Kernkastenoberteils durch Druckluft und Einspritzen vom Trennmittel wird ein neuer Formstückträger in den Kernkasten eingelegt. Der Kernkasten wird geschlossen und vor beziehungsweise während des Verfahrens zur Schießstation wieder in die Vertikale gekippt.After cleaning the core box upper part by compressed air and injection a new shaped part carrier is transferred from the release agent into the core box inserted. The core box is closed and in front of respectively tilted back to the vertical during the process to the shooting station.
In einer weiteren Ausgestaltung der Erfindung kann der Kernkasten in seinem Inneren weitere formgebende Bestandteile für die Formgebung von Hohlräumen im Formkörper aufweisen.In a further embodiment of the invention, the core box in its Interior further shaping components for the shaping of Have cavities in the molded body.
Zur Steigerung der Produktivität können die Prozeßschritte zeitlich parallel in den verschiedenen Maschinenstationen durchgeführt werden. Der Transport der Kernkästen kann dabei über einen Rundschalttisch erfolgen, der einen Transport zwischen der Schießstation, einer Nivellierstation und einer Entnahmestation ermöglicht.The process steps can be carried out in parallel to increase productivity be carried out in the various machine stations. The The core boxes can be transported via a rotary indexing table, the one transport between the shooting station, a leveling station and a sampling station.
Alternativ können das Einschießen, Nivellieren und Entnehmen an der gleichen Position durchgeführt werden. Die zur Durchführung dieser Verfahrensschritte notwendigen Vorrichtungsbestandteile werden dabei an diese Arbeitsposition herangeführt. Die Verfahrensweise nach dem Rundtakt- oder Transferprinzip ist jedoch die bevorzugte.Alternatively, the shooting, leveling and removal can be done on the same position. Those to carry out these procedural steps necessary device components are included introduced this working position. The procedure after However, the rotary cycle or transfer principle is the preferred one.
Claims (17)
dadurch gekennzeichnet,
dass der Formstoff ein verzögert aushärtender Stoff ist.Core shooting process in which a molding material is shot into a core box and then removed from it,
characterized by
that the molding material is a material that cures with a delay.
dadurch gekennzeichnet,
dass der Kernkasten zum Einschießen des Formstoffes im Wesentlichen in einer Vertikalen bezüglich der Längsausrichtung des zu formenden Körpers positioniert wird und zur Entnahme im Wesentlichen in eine Horizontale geschwenkt wird.Core shooting method according to claim 1,
characterized by
that the core box for shooting in the molding material is positioned essentially in a vertical with respect to the longitudinal orientation of the body to be molded and is pivoted substantially into a horizontal for removal.
dadurch gekennzeichnet,
dass der Kernkasten zum Einschießen des Formstoffes bezogen auf die Hauptteilungsebene im Wesentlichen in einer Vertikalen positioniert wird.Core shooting method according to claim 1 or 2,
characterized by
that the core box for injecting the molding material is positioned essentially in a vertical position with respect to the main division level.
dadurch gekennzeichnet,
dass der Formstoff nach dem Einschießen nivelliert wird, wobei sich der Kernkasten - bezogen auf seine Hauptteilungsebene - im Wesentlichen in vertikaler Stellung befindet. Core shooting method according to one of claims 1 to 3,
characterized by
that the molding material is leveled after being shot in, the core box — in relation to its main division level — being essentially in a vertical position.
dadurch gekennzeichnet,
dass die Nivellierung durch Aufpressen eines Konturenteils erfolgt.Core shooting method according to claim 4,
characterized by
that the leveling is done by pressing on a contour part.
dadurch gekennzeichnet,
dass der verzögert aushärtende Formstoff auf einen sich im Kernkasten befindenden Formstückträger aufgeschossen wird.Core shooting method according to one of claims 1 to 5,
characterized by
that the delayed curing molding material is shot onto a molding carrier located in the core box.
dadurch gekennzeichnet,
dass der verzögert aushärtende Formstoff mittels Druckluft in den Kernkasten eingeschossen wird, indem ein Druckluftreservoir über eine Schießeinheit in Richtung des Kernkastens entspannt wird.Core shooting method according to one of claims 1 to 6,
characterized by
that the delayed curing molding material is injected into the core box by means of compressed air, in that a compressed air reservoir is expanded in the direction of the core box via a shooting unit.
dadurch gekennzeichnet,
dass die Druckluft einen Ausgangsdruck von mindestens 7 bar aufweist.Core shooting method according to claim 7,
characterized by
that the compressed air has an outlet pressure of at least 7 bar.
dadurch gekennzeichnet,
dass die Druckluft einen Ausgangsdruck in einem Bereich von 8,5 bis 10 bar aufweist.Core shooting method according to claim 8,
characterized by
that the compressed air has an outlet pressure in a range from 8.5 to 10 bar.
dadurch gekennzeichnet,
dass das Formteil entnommen wird, indem das Oberteil des Kernkastens abgehoben wird und eine Ausstoßvorrichtung den Formstückträger, welcher das Formstück trägt, durch das Kernkastenunterteil so weit angehoben wird, dass der Formstückträger mit dem daraufliegenden Formstück entnommen werden kann.Core shooting method according to one of claims 1 to 9,
characterized by
that the molded part is removed by lifting off the upper part of the core box and an ejection device raises the molded part carrier that carries the molded part through the lower part of the core box so that the molded part carrier with the molded part lying thereon can be removed.
dadurch gekennzeichnet,
dass das Einschießen des verzögert härtenden Formstoffes, das Nivellieren und die Entnahme des Formstückes aus dem Kernkasten an verschiedenen Maschinenstationen erfolgt.Core shooting method according to one of claims 1 to 10,
characterized by
that the delayed curing molding material is shot in, the leveling and the removal of the molding from the core box takes place at different machine stations.
dadurch gekennzeichnet,
dass der Kernkasten zur Durchführung der verschiedenen Verfahrensschritte über einen Rundschalttisch transportiert wird.Core shooting method according to claim 11,
characterized by
that the core box for carrying out the various process steps is transported over a rotary indexing table.
dadurch gekennzeichnet,
dass die Schießvorrichtung Mittel zum schlagartigen Entspannen eines Druckluftresevoirs aufweist und dass die Kernschießvorrichtung Mittel zum Wenden eines Kernkastens aufweist.Core shooting device comprising a shooting device and a removal station,
characterized by
that the shooting device has means for suddenly relaxing a compressed air reservoir and that the core shooting device has means for turning a core box.
dadurch gekennzeichnet,
dass die Mittel zum schlagartigen Entspannen eines Druckluftresevoirs einen Ausgangsdruck von mindestens 7 bar erzeugen.Core shooter according to claim 13,
characterized by
that the means for the sudden relaxation of a compressed air reservoir generate an initial pressure of at least 7 bar.
dadurch gekennzeichnet,
dass die Mittel zum schlagartigen Entspannen eines Druckluftresevoirs einen Ausgangsdruck von 8,5 bis 10 bar erzeugen.Core shooter according to claim 14,
characterized by
that the means for the sudden relaxation of a compressed air reservoir generate an outlet pressure of 8.5 to 10 bar.
dadurch gekennzeichnet,
dass sie mit einem Sandzylinder ausgestattet ist.Core shooter according to one of claims 13 to 15,
characterized by
that it is equipped with a sand cylinder.
dadurch gekennzeichnet,
dass sie vorzugsweise nach dem Rundtakt- oder Transferprinzip arbeitet.Core shooter according to one of claims 13 to 16,
characterized by
that it preferably works according to the rotary cycle or transfer principle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19959234A DE19959234C2 (en) | 1999-12-08 | 1999-12-08 | Core shooting method and device suitable for carrying out the method |
| DE19959234 | 1999-12-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1106281A1 true EP1106281A1 (en) | 2001-06-13 |
| EP1106281B1 EP1106281B1 (en) | 2005-03-30 |
Family
ID=7931896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00126613A Expired - Lifetime EP1106281B1 (en) | 1999-12-08 | 2000-12-04 | Core blowing method and apparatus |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1106281B1 (en) |
| AT (1) | ATE291977T1 (en) |
| DE (2) | DE19959234C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009034085A2 (en) * | 2007-09-11 | 2009-03-19 | Monier Technical Centre Gmbh | Method for producing roofing tiles and device for producing said roofing tiles |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013216674B4 (en) | 2013-08-22 | 2022-10-13 | Bayerische Motoren Werke Aktiengesellschaft | Self-closing rubber sealing caps for injection nozzles in the production of sand cores in the foundry |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2908210A1 (en) * | 1978-04-05 | 1979-10-11 | Gisag Veb | MOLDING MACHINE, IN PARTICULAR CORE MOLDING MACHINE |
| DE2953668C1 (en) * | 1979-05-18 | 1983-12-15 | Vsesojuznyj naučno-issledovatel'skij institut litejnogo mašinostroenija, litejnoj technologii i avtomatizacii litejnogo proizvodstva, Moskva | Blowing machine |
| DE4020933A1 (en) * | 1990-06-06 | 1991-12-12 | Rheinische Maschinenfabrik & E | Core of mould box filler - has sand firing container linked to compressed air supply through a firing valve |
| US5630305A (en) * | 1991-08-26 | 1997-05-20 | Hlasnicek; Richard S. | Surface covering unit methods of use and manufacture |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5890348A (en) * | 1981-11-24 | 1983-05-30 | Sintokogio Ltd | Molding machine for mold by gas hardening |
| DE3339941A1 (en) * | 1983-11-04 | 1985-05-15 | Forma-Bühler GmbH Automatische Formanlagen, 8900 Augsburg | Process and apparatus for the production of boxless casting moulds consisting of two mould halves |
| DE4434798A1 (en) * | 1993-10-14 | 1995-05-11 | Georg Fischer Giesereianlagen | Core and mask shooting machine |
-
1999
- 1999-12-08 DE DE19959234A patent/DE19959234C2/en not_active Expired - Lifetime
-
2000
- 2000-12-04 DE DE50009913T patent/DE50009913D1/en not_active Expired - Lifetime
- 2000-12-04 AT AT00126613T patent/ATE291977T1/en not_active IP Right Cessation
- 2000-12-04 EP EP00126613A patent/EP1106281B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2908210A1 (en) * | 1978-04-05 | 1979-10-11 | Gisag Veb | MOLDING MACHINE, IN PARTICULAR CORE MOLDING MACHINE |
| DE2953668C1 (en) * | 1979-05-18 | 1983-12-15 | Vsesojuznyj naučno-issledovatel'skij institut litejnogo mašinostroenija, litejnoj technologii i avtomatizacii litejnogo proizvodstva, Moskva | Blowing machine |
| DE4020933A1 (en) * | 1990-06-06 | 1991-12-12 | Rheinische Maschinenfabrik & E | Core of mould box filler - has sand firing container linked to compressed air supply through a firing valve |
| US5630305A (en) * | 1991-08-26 | 1997-05-20 | Hlasnicek; Richard S. | Surface covering unit methods of use and manufacture |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009034085A2 (en) * | 2007-09-11 | 2009-03-19 | Monier Technical Centre Gmbh | Method for producing roofing tiles and device for producing said roofing tiles |
| WO2009034085A3 (en) * | 2007-09-11 | 2009-06-18 | Monier Technical Ct Gmbh | Method for producing roofing tiles and device for producing said roofing tiles |
| RU2462354C2 (en) * | 2007-09-11 | 2012-09-27 | Монир Текникал Сентр Гмбх | Method and device for production of tile |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50009913D1 (en) | 2005-05-04 |
| DE19959234A1 (en) | 2001-06-21 |
| DE19959234C2 (en) | 2001-10-18 |
| ATE291977T1 (en) | 2005-04-15 |
| EP1106281B1 (en) | 2005-03-30 |
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