EP1651405B1 - Device and method for producing concrete moulded bodies - Google Patents

Device and method for producing concrete moulded bodies Download PDF

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Publication number
EP1651405B1
EP1651405B1 EP04741190A EP04741190A EP1651405B1 EP 1651405 B1 EP1651405 B1 EP 1651405B1 EP 04741190 A EP04741190 A EP 04741190A EP 04741190 A EP04741190 A EP 04741190A EP 1651405 B1 EP1651405 B1 EP 1651405B1
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EP
European Patent Office
Prior art keywords
mould
mold
frame
pressure
insert
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EP04741190A
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German (de)
French (fr)
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EP1651405A1 (en
Inventor
Rudolf Braungardt
Erwin Schmucker
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Kobra Formen GmbH
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Kobra Formen GmbH
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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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0002—Auxiliary parts or elements of the mould
    • B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
    • 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/081—Vibration-absorbing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/022—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is subjected to vibrations

Definitions

  • the invention relates to a device for the production of concrete moldings in a molding machine and to a process for the production of concrete moldings using such a device.
  • the mold frame is in turn clamped in a molding machine and is pressed for the Studttel peaceful towards the Haittelauflage.
  • the force exerted by the machine upon depression of the mold frame on this contact force is transmitted to the mold insert and this pressed firmly during Studttel ceremoniess on the Studttelunterlage.
  • elastic damping plates are inserted between vertically opposed, obliquely aligned surfaces of the mold frame and mold insert, via which the contact force between the mold frame and the mold insert is transmitted.
  • Object of the present invention is to provide an advantageous device of the type mentioned for the production of concrete moldings and a method for producing concrete moldings by means of such a device.
  • Fluid-filled hollow bodies are known per se in connection with concrete block forming machines, but in a different function and arrangement than in the present invention.
  • DE 30 49 492 A1 z. B a molding machine for concrete pipes described in which the inner tube formwork is clamped on a fluid-filled hollow clamping ring with an internal imbalance RÜttel adopted.
  • DE 42 12 702 A1 shows an inflatable cuff around a part of a molded block.
  • a vibrating mold known from GB 1 591 603 an unbalance vibrator is coupled with sidebars of a mold using an airbag.
  • the figure shows fragmentary in a vertical cross-sectional plane a vibrating mold, which in a conventional manner a mold frame FR and a mold insert FE, wherein the mold insert contains one or more mold cavities FN.
  • Projections and depressions on mutually facing sides of mold insert and mold frame engage each other with horizontal overlap, so that in the horizontal overlap area surfaces of mold insert and mold frame, which serve for transmitting a contact force from the mold frame on the mold insert (and the counter-opposing force), facing vertically ,
  • these are an area RFO on the mold frame and an area FFO on the mold insert.
  • damping means can be inserted between these opposing surfaces.
  • the surfaces can also be aligned obliquely and / or curved or structured.
  • damping means are in the present case designed according to the invention as a hollow body HK, wherein the cavity of the hollow body is acted upon by a supply line RL, which may be performed in an advantageous embodiment as a loop around the entire mold frame, with a fluid.
  • the fluid may be a liquid, in particular oil, or a gas, in particular compressed air.
  • the cavity and the supply line are part of a hollow chamber system.
  • flange flanges FL are typically attached to the mold frame, which can be made in one piece with corresponding transverse strips of the mold frame or advantageously also rigidly connected to transverse strips of the mold frame.
  • the mold frame is clamped in the molding machine via the flange strips FL.
  • Running rails LS on the upper surface of the mold insert serve to guide a filling carriage, by means of which the mold cavities of the mold insert are filled with fresh concrete when the mold insert FE is placed on a vibrating pad AP.
  • the fluid pressure in the hollow body HK and the hollow chamber system connected thereto are preset to an initial value according to the present invention.
  • the hollow body HK which is elastically deformable, expands in this case until the mold frame abuts on its upper edge or preferably with a lower abutment surface UA, preferably with the interposition of a not or only slightly compressible damping element DE on the mold insert, in particular a lower stop surface FFU and so occupies a defined position with respect to the mold insert, in which in particular the volume of the hollow body HK and thus also the volume of the hollow chamber system have a defined value.
  • the mold insert can also rest under its own weight with its lower stop surface FFU on the lower contact surface UA or the damping element DE.
  • the pressing force is amplified on the damping element, wherein preferably a further deformation of the damping element is negligible.
  • the hollow chamber system is maintained at this volume value, for example by a connecting line to a fluid source is sealed off.
  • the molding machine displacement devices such as hydraulic cylinders or the like, which attach to the flange FL, the mold frame FR pressed down in the direction of the pad AP, the lower stop surface FFU stands out from the damping element DE and a force connection between the mold frame and mold insert only between the surfaces RFO and FFO on the pressurized hollow body HK takes place.
  • the fluid pressure in the hollow chamber system is monitored and the downwards movement of the mold frame is stopped as soon as a predeterminable value of the fluid pressure is reached. In this position, the mold frame or the displacement device is locked and held for the subsequent shaking.
  • the mold frame Upon completion of the shaking operation, the mold frame is typically raised above the displacement means, thereby compressing the compacted concrete mold bodies downward from the mold cavities FN and remaining on the shaking pad AP.
  • the concrete moldings are expressed in an already existing layer of concrete moldings.
  • the hollow chamber system may include a pressure reservoir and / or an expandable chamber.
  • hollow bodies are inserted on all sides of the mold between the mold frame and mold insert.
  • another hollow body may be inserted, which belongs starting from the outlet pressure own hollow chamber system, which is separated from the Hohlcrosytems the hollow body HK. During pressure monitoring, it is then also possible to monitor a pressure difference between the two hollow chamber systems whose pressure changes in the opposite direction during the displacement of the mold frame.
  • the output pressure in the hollow chamber system can be variably predetermined and so optimally adapted to the other production parameters, in particular the material to be compacted.
  • the insert Due to the automatic setting of a defined operating pressure of the fluid in the hollow body, the insert can also be adjusted by the user himself, i. H. typically in the concrete plant, changed and again a defined bias voltage for the Rüttel terme be achieved.
  • This is also advantageous from the aspect that different mold inserts can be used with the same shape frame, so that the user only uses a mold frame, which can remain longer in the machine and when changing the stone shapes, only the mold insert is replaced.
  • the longitudinal strips connecting the opposite transverse strips of the mold frame are releasably secured to the transverse strips.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

The invention relates to a device and method for producing concrete moulded bodies, whereby a defined pre-tensioning of damping means, located between the mould frame and the mould insert, can be adjusted in a simple manner for the vibration operation.

Description

Die Erfindung betrifft eine Vorrichtung zur Herstellung von Betonformkörpern in einer Formmaschine sowie ein Verfahren zur Herstellung von Betonformkörpern unter Einsatz einer solchen Vorrichtung.The invention relates to a device for the production of concrete moldings in a molding machine and to a process for the production of concrete moldings using such a device.

Es ist bekannt, verdichtete Betonformkörper in Formmaschinen unter Einsatz von Rütteleinrichtungen herzustellen. Hierbei ist bei bekannten Vorrichtungen eine Form auf eine Rüttelunterlage abgesetzt. Zwischen Formmaschine und Form sind typischerweise pneumatische Vorrichtungen vorgesehen, welche die Anpresskraft aufbringen. Beispielsweise ist aus der US 4 193 754 eine Vorrichtung bekannt, bei welcher eine Form mittels Luftbalgen für den Rüttelbetrieb auf eine das Formnest nach unten abschließende ebene Auflage gedrückt ist. Während die Form in der US 4 193 754 einteilig ausgeführt ist, sind neuere Formen häufig zweiteilig mit einem Formrahmen und einem in diesem gehaltenen Formeinsatz mit einem oder mehreren Formnestern ausgeführt. Der Formeinsatz ist auf einer Rüttelunterlage abgestützt. Der Formrahmen ist seinerseits in eine Formmaschine eingespannt und wird für den Rüttelbetrieb in Richtung der Rüttelauflage gedrückt. Über die Verbindung von Formrahmen und Formeinsatz wird die von der Maschine beim Niederdrücken des Formrahmens auf diesen ausgeübte Anpresskraft auf den Formeinsatz übertragen und dieser während des Rüttelbetriebs fest auf die Rüttelunterlage gedrückt. Bei einer aus der EP 730 936 A1 bekannten Vorrichtung sind zwischen vertikal gegenüberstehende, schräg ausgerichtete Flächen von Formrahmen und Formeinsatz elastische Dämpfungsplatten eingefügt, über welche die Anpresskraft zwischen Formrahmen und Formeinsatz übertragen wird.It is known to produce compacted concrete moldings in molding machines using vibrators. Here, in known devices, a mold is deposited on a Rüttelunterlage. Between the molding machine and mold are typically provided pneumatic devices which apply the contact pressure. For example, from US Pat. No. 4,193,754 a device is known in which a mold is pressed by means of air bellows for shaking operation onto a flat support which closes the mold cavity downwards. While the mold is made in one piece in US 4,193,754, newer molds are often made in two parts with a mold frame and a mold insert held therein with one or more mold cavities. The mold insert is supported on a Rüttelunterlage. The mold frame is in turn clamped in a molding machine and is pressed for the Rüttelbetrieb towards the Rüttelauflage. Through the connection of the mold frame and mold insert, the force exerted by the machine upon depression of the mold frame on this contact force is transmitted to the mold insert and this pressed firmly during Rüttelbetriebs on the Rüttelunterlage. In a device known from EP 730 936 A1, elastic damping plates are inserted between vertically opposed, obliquely aligned surfaces of the mold frame and mold insert, via which the contact force between the mold frame and the mold insert is transmitted.

Aufgabe der vorliegenden Erfindung ist es, eine vorteilhafte Vorrichtung der genannten Art zur Herstellung von Betonformkörpern sowie ein Verfahren zur Herstellung von Betonformkörpern mittels einer derartigen Vorrichtung anzugeben.Object of the present invention is to provide an advantageous device of the type mentioned for the production of concrete moldings and a method for producing concrete moldings by means of such a device.

Erfindungsgemäße Lösungen sind in den unabhängigen Patentansprüchen beschrieben. Mit der vorliegenden Erfindung wird auf vorteilhafte Weise eine besonders günstige pneumatische Verbindung zwischen Formeinsatz und Formrahmen gegeben und eine definierte Anpresskraft unabhängig von Maßtoleranzen der Form oder der Rüttelunterlage eingestellt. Die pneumatische Einspannung des Formrahmens über dessen Flansche in die Formmaschine kann dabei entfallen und der Formrahmen kann fest in die Formmaschine eingespannt sein. Bei der Erfindung übemimmt die vorteilhaft einstellbare Dämpfung zwischen Formeinsatz und Formrahmen zugleich die Einstellung der Anpresskraft des Formeinsatzes auf die Rüttelunterlage.Solutions according to the invention are described in the independent patent claims. With the present invention, a particularly favorable pneumatic connection between mold insert and mold frame is given in an advantageous manner and set a defined contact pressure regardless of dimensional tolerances of the mold or the Rüttelunterlage. The pneumatic clamping of the mold frame via its flanges in the molding machine can be omitted and the mold frame can be firmly clamped in the molding machine. In the invention, the advantageous adjustable damping between mold insert and mold frame übemimmt the same time adjusting the contact pressure of the mold insert on the Rüttelunterlage.

Fluidgefüllte Hohlkörper sind in Verbindung mit Betonstein-Formmaschinen an sich bekannt, allerdings in anderer Funktion und Anordnung als bei der vorliegenden Erfindung. In der DE 30 49 492 A1 ist z. B. eine Formmaschine für Betonrohre beschrieben, bei welcher die innere Rohrschalung über einen fluidgefüllten Hohlspannring mit einer innenliegenden Unwucht-RÜtteleinrichtung verspannt ist. Die DE 42 12 702 A1 zeigt eine aufblasbare Manschette um einen Teil eines Formsteins. Bei einer aus der GB 1 591 603 bekannten Rüttelform wird ein Unwucht-Vibrator unter Einsatz eines Luftsacks mit Seitenleisten einer Form gekoppelt.Fluid-filled hollow bodies are known per se in connection with concrete block forming machines, but in a different function and arrangement than in the present invention. In DE 30 49 492 A1 z. B. a molding machine for concrete pipes described in which the inner tube formwork is clamped on a fluid-filled hollow clamping ring with an internal imbalance RÜtteleinrichtung. DE 42 12 702 A1 shows an inflatable cuff around a part of a molded block. In a vibrating mold known from GB 1 591 603, an unbalance vibrator is coupled with sidebars of a mold using an airbag.

Die Erfindung ist anhand bevorzugter Ausführungsbeispiele unter Bezugnahme auf die Abbildung noch eingehend veranschaulicht.The invention is illustrated in detail by means of preferred embodiments with reference to the figure.

Die Abbildung zeigt ausschnittsweise in einer vertikalen Querschnittsebene eine Rüttelform, welche in an sich bekannter Weise einen Formrahmen FR und einen Formeinsatz FE aufweist, wobei der Formeinsatz ein oder mehrere Formnester FN enthält. Vorsprünge und Vertiefungen an einander zugewandten Seiten von Formeinsatz und Formrahmen greifen mit horizontaler Überlappung ineinander, so das sich im horizontalen Überlappungsbereich Flächen von Formeinsatz und Formrahmen, welche zur Übertragung einer Anpresskraft vom Formrahmen auf den Formeinsatz (und der entgegen gerichteten Gegenkraft) dienen, vertikal gegenüberstehen. Im skizzierten Beispiel sind dies eine Fläche RFO am Formrahmen und eine Fläche FFO am Formeinsatz. In an sich bekannter Weise können zwischen diese einander gegenüberstehenden Flächen Dämpfungsmittel eingefügt sein. Die Flächen können auch schräg ausgerichtet und/oder gewölbt oder strukturiert sein.The figure shows fragmentary in a vertical cross-sectional plane a vibrating mold, which in a conventional manner a mold frame FR and a mold insert FE, wherein the mold insert contains one or more mold cavities FN. Projections and depressions on mutually facing sides of mold insert and mold frame engage each other with horizontal overlap, so that in the horizontal overlap area surfaces of mold insert and mold frame, which serve for transmitting a contact force from the mold frame on the mold insert (and the counter-opposing force), facing vertically , In the example sketched, these are an area RFO on the mold frame and an area FFO on the mold insert. In a manner known per se, damping means can be inserted between these opposing surfaces. The surfaces can also be aligned obliquely and / or curved or structured.

Diese Dämpfungsmittel sind im vorliegenden Fall erfindungsgemäß als Hohlkörper HK ausgeführt, wobei der Hohlraum des Hohlkörpers über eine Zuleitung RL, welche in vorteilhafter Ausführung als Ringleitung um den gesamten Formrahmen ausgeführt sein kann, mit einem Fluid beaufschlagt ist. Das Fluid kann eine Flüssigkeit, insbesondere Öl, oder ein Gas, insbesondere Druckluft sein. Der Hohlraum und die Zuleitung sind Teil eines Hohlkammersystems. An zwei Seiten des Formrahmens gegenüberliegend sind typischerweise Flanschleisten FL am Formrahmen befestigt, welche einstückig mit entsprechenden Querleisten des Formrahmens ausgeführt oder vorteilhafterweise auch starr mit Querleisten des Formrahmens verbunden sein können. Über die Flanschleisten FL wird der Formrahmen in die Formmaschine eingespannt. Laufschienen LS auf der oberen Fläche des Formeinsatzes dienen zur Führung eines Füllwagens, mittels dessen bei auf einer Rüttelunterlage AP aufgesetztem Formeinsatz FE die Formnester des Formeinsatzes mit Frischbeton befüllt werden.These damping means are in the present case designed according to the invention as a hollow body HK, wherein the cavity of the hollow body is acted upon by a supply line RL, which may be performed in an advantageous embodiment as a loop around the entire mold frame, with a fluid. The fluid may be a liquid, in particular oil, or a gas, in particular compressed air. The cavity and the supply line are part of a hollow chamber system. On two sides of the mold frame, flange flanges FL are typically attached to the mold frame, which can be made in one piece with corresponding transverse strips of the mold frame or advantageously also rigidly connected to transverse strips of the mold frame. The mold frame is clamped in the molding machine via the flange strips FL. Running rails LS on the upper surface of the mold insert serve to guide a filling carriage, by means of which the mold cavities of the mold insert are filled with fresh concrete when the mold insert FE is placed on a vibrating pad AP.

Vor Ausübung einer Anpresskraft KM auf den Formrahmen wird gemäß der vorliegenden Erfindung der Fluiddruck im Hohlkörper HK und dem mit diesem verbundenen Hohlkammersystem auf einen Ausgangswert voreingestellt. Der Hohlkörper HK, welcher elastisch deformierbar ist, dehnt sich hierbei aus, bis der Formrahmen an seiner Oberkante oder vorzugsweise mit einer unteren Anlagefläche UA, vorzugsweise unter Zwischenfügung eines nicht oder nur gering komprimierbaren Dämpfungselements DE an dem Formeinsatz, insbesondere einer unteren Anschlagfläche FFU anschlägt und so bezüglich des Formeinsatzes eine definierte Position einnimmt, in welcher insbesondere das Volumen des Hohlkörpers HK und damit auch das Volumen des Hohlkammersystems einen definierten Wert haben. Der Formeinsatz kann auch unter seinem Eigengewicht mit seiner unteren Anschlagfläche FFU auf der unteren Anlagefläche UA bzw. dem Dämpfungselement DE anliegen. Bei Einstellung des Fluiddruckes auf einen Ausgangswert wird die Andrückkraft auf das Dämpfungselement verstärkt, wobei vorzugsweise eine weitere Verformung des Dämpfungselements vernachlässigbar sei. Das Hohlkammersystem wird auf diesem Volumenwert gehalten, beispielsweise indem eine Verbindungsleitung zu einer Fluidquelle abgeriegelt wird. Aus dieser Position des Formrahmens relativ zum Formeinsatz wird durch mit der Formmaschine verbundene Verschiebeeinrichtungen, beispielsweise Hydraulikzylinder oder dergleichen, welche an den Flanschleisten FL ansetzen, der Formrahmen FR nach unten in Richtung der Auflage AP gedrückt, wobei die untere Anschlagfläche FFU von dem Dämpfungselement DE abhebt und eine Kraftverbindung zwischen Formrahmen und Formeinsatz nur noch zwischen den Flächen RFO und FFO über die druckbeaufschlagten Hohlkörper HK erfolgt. Während dieser Verschiebung wird der Fluiddruck im Hohlkammersystem überwacht und die Verschiebung des Formrahmens nach unten wird abgebrochen, sobald ein vorgebbarer Wert des Fluiddrucks erreicht wird. In dieser Position wird der Formrahmen bzw. die Verschiebeeinrichtung arretiert und für den nachfolgenden Rüttelvorgang festgehalten. Nach Beendigung des Rüttelvorgangs wird typischerweise der Formrahmen und mit diesem der Formeinsatz über die Verschiebeeinrichtungen angehoben, wodurch die verdichteten Betonformkörper aus den Formnestern FN nach unten ausgedrückt werden und auf der Rüttelunterlage AP verbleiben. Bei Mehrlagenfertigung werden die Betonformkörper auf eine bereits vorliegende Lage von Betonformkörpern ausgedrückt.Before exerting a contact pressure KM on the mold frame, the fluid pressure in the hollow body HK and the hollow chamber system connected thereto are preset to an initial value according to the present invention. The hollow body HK, which is elastically deformable, expands in this case until the mold frame abuts on its upper edge or preferably with a lower abutment surface UA, preferably with the interposition of a not or only slightly compressible damping element DE on the mold insert, in particular a lower stop surface FFU and so occupies a defined position with respect to the mold insert, in which in particular the volume of the hollow body HK and thus also the volume of the hollow chamber system have a defined value. The mold insert can also rest under its own weight with its lower stop surface FFU on the lower contact surface UA or the damping element DE. When setting the fluid pressure to an initial value, the pressing force is amplified on the damping element, wherein preferably a further deformation of the damping element is negligible. The hollow chamber system is maintained at this volume value, for example by a connecting line to a fluid source is sealed off. From this position of the mold frame relative to the mold insert is connected by connected to the molding machine displacement devices, such as hydraulic cylinders or the like, which attach to the flange FL, the mold frame FR pressed down in the direction of the pad AP, the lower stop surface FFU stands out from the damping element DE and a force connection between the mold frame and mold insert only between the surfaces RFO and FFO on the pressurized hollow body HK takes place. During this shift, the fluid pressure in the hollow chamber system is monitored and the downwards movement of the mold frame is stopped as soon as a predeterminable value of the fluid pressure is reached. In this position, the mold frame or the displacement device is locked and held for the subsequent shaking. Upon completion of the shaking operation, the mold frame is typically raised above the displacement means, thereby compressing the compacted concrete mold bodies downward from the mold cavities FN and remaining on the shaking pad AP. In multilayer production, the concrete moldings are expressed in an already existing layer of concrete moldings.

Durch die Überwachung des Fluiddrucks auf das Erreichen eines vorgebbaren Sollwerts wird eine hinsichtlich Anpresskraft und Geometrie des Hohlkörpers definierte Ausgangssituation für den Rüttelbetrieb erreicht. Hierdurch sind insbesondere die dynamischen Eigenschaften der Halterung des Formeinsatzes im Formrahmen präzise vorgebbar und durch Maßtoleranzen der Form oder der Rüttelauflage AP nicht beeinflußt.By monitoring the fluid pressure to reach a predefinable setpoint, a starting situation for shaking operation defined with regard to contact force and geometry of the hollow body is achieved. As a result, in particular the dynamic properties of the holder of the mold insert in the mold frame are precisely predetermined and not affected by dimensional tolerances of the mold or the Rüttelauflage AP.

Als Fluid kommen sowohl eine Flüssigkeit oder ein Gas als auch eine Mischung aus beiden in Betracht. Das Hohlkammersystem kann ein Druckreservoir und/oder eine ausdehnbare Kammer umfassen. Vorzugsweise sind Hohlkörper an allen Seiten der Form zwischen Formrahmen und Formeinsatz eingefügt.As the fluid, both a liquid or a gas as well as a mixture of both come into consideration. The hollow chamber system may include a pressure reservoir and / or an expandable chamber. Preferably, hollow bodies are inserted on all sides of the mold between the mold frame and mold insert.

In anderer Ausführung kann auch gegenüberliegend dem in der Skizze eingezeichneten Hohlkörper anstelle des Dämpfungselements DE und der unteren Fläche UA ein weiterer Hohlkörper eingefügt sein, welcher ausgehend von dem Ausgangsdruck einem eigenen Hohlkammersystem angehört, welches von dem Hohlkammersytems des Hohlkörpers HK getrennt ist. Bei der Drucküberwachung kann dann auch eine Druckdifferenz zwischen den beiden Hohlkammersystemen, deren Druck sich gegenläufig verändert bei der Verschiebung des Formrahmens, überwacht werden.In another embodiment, also opposite the hollow body shown in the sketch instead of the damping element DE and the lower surface UA another hollow body may be inserted, which belongs starting from the outlet pressure own hollow chamber system, which is separated from the Hohlkammersytems the hollow body HK. During pressure monitoring, it is then also possible to monitor a pressure difference between the two hollow chamber systems whose pressure changes in the opposite direction during the displacement of the mold frame.

Der Ausgangsdruck in dem Hohlkammersystem kann variabel vorgebbar sein und so optimal auf die anderen Herstellungsparameter, insbesondere dem zu verdichtenden Material angepaßt werden.The output pressure in the hollow chamber system can be variably predetermined and so optimally adapted to the other production parameters, in particular the material to be compacted.

Durch die automatische Einstellung eines definierten Betriebsdrucks des Fluids im Hohlkörper kann der Einsatz auch durch den Benutzer selbst, d. h. typischerweise im Betonwerk, gewechselt und wieder eine definierte Vorspannung für den Rüttelbetrieb erreicht werden. Dies ist vorteilhaft auch unter dem Aspekt, dass verschiedene Formeinsätze bei gleichbleibendem Formrahmen verwandt werden können, so dass der Benutzer lediglich einen Formrahmen benutzt, welcher auch länger in der Maschine verbleiben kann und bei Wechsel der Steinformen lediglich der Formeinsatz ausgetauscht wird. Vorzugsweise sind hierfür die gegenüberliegende Querleisten verbindende Längsleisten des Formrahmens lösbar an den Querleisten befestigt.Due to the automatic setting of a defined operating pressure of the fluid in the hollow body, the insert can also be adjusted by the user himself, i. H. typically in the concrete plant, changed and again a defined bias voltage for the Rüttelbetrieb be achieved. This is also advantageous from the aspect that different mold inserts can be used with the same shape frame, so that the user only uses a mold frame, which can remain longer in the machine and when changing the stone shapes, only the mold insert is replaced. Preferably, for this purpose, the longitudinal strips connecting the opposite transverse strips of the mold frame are releasably secured to the transverse strips.

Claims (2)

  1. Apparatus for producing concrete mouldings, having a moulding machine and a mould which contains a mould frame and a mould insert retained therein,
    - it being possible for the mould insert (FE) to be set down on a support (AP), and
    - displacement means of the moulding machine forcing the mould frame (FR), under a contact-pressure force (KM), in the direction of the support,
    characterized in that
    - fluid-filled hollow bodies (HK) containing fluid subjected to excess pressure are introduced between vertically opposite surfaces of the mould frame (RFO) and mould insert (FFO), the hollow bodies transmitting the contact-pressure force and retaining forces between the mould frame (FR) and mould insert (FE) during vibration operation, and
    - a control arrangement is connected to means for measuring the fluid pressure and to the power source.
  2. Method of producing concrete mouldings by means of an apparatus according to Claim 1, characterized in that
    - a defined initial excess pressure of the fluid in the hollow bodies (HK) is set without the contact-pressure force (KM) being present,
    - the frame (FR) is displaced in the direction of the support (AP), with the mould insert (FE) positioned on the support (AP), by displacement means,
    - the fluid pressure in the hollow-body arrangement is monitored,
    - when a predeterminable operating value of the excess fluid pressure is reached, the displacement of the mould frame (FR) in the direction of the support (AP) is stopped and the mould frame (FR) is arrested in this position, and
    - vibration is carried out with the mould frame (FR) in the arrested position.
EP04741190A 2003-07-23 2004-07-21 Device and method for producing concrete moulded bodies Not-in-force EP1651405B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10333731A DE10333731A1 (en) 2003-07-23 2003-07-23 Apparatus and process for the production of concrete moldings
PCT/EP2004/008143 WO2005009704A1 (en) 2003-07-23 2004-07-21 Device and method for producing concrete moulded bodies

Publications (2)

Publication Number Publication Date
EP1651405A1 EP1651405A1 (en) 2006-05-03
EP1651405B1 true EP1651405B1 (en) 2007-03-07

Family

ID=34088798

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Application Number Title Priority Date Filing Date
EP04741190A Not-in-force EP1651405B1 (en) 2003-07-23 2004-07-21 Device and method for producing concrete moulded bodies

Country Status (6)

Country Link
EP (1) EP1651405B1 (en)
AT (1) ATE355947T1 (en)
DE (2) DE10333731A1 (en)
DK (1) DK1651405T3 (en)
ES (1) ES2281809T3 (en)
WO (1) WO2005009704A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005017670A1 (en) * 2005-04-16 2006-10-19 Kobra Formen Gmbh Apparatus for the production of concrete blocks and mold system for use in such a device
NL1030837C2 (en) * 2006-01-04 2007-07-05 Jan Hendrik De Hoog Casting mold for e.g. concrete bricks, includes resilient coupling devices which allow vertical displacement of outer mold frame
DK1967339T3 (en) * 2007-03-07 2014-06-23 Iab Inst Für Angewandte Bauforschung Weimar Ggmbh Device and method for compressing dry mixtures
CN106926352A (en) * 2017-03-08 2017-07-07 淮北海聚环保设备有限公司 For the production mould and processing technology of the cavity of environmental protection equipment
CN113183285B (en) * 2021-05-21 2022-08-09 湖南万众筑工科技有限公司 Method for manufacturing, pouring and molding reinforced concrete prefabricated wall

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5424922A (en) * 1977-07-26 1979-02-24 Katsura Kikai Seisakushiyo Kk Vibration equipment for concrete block molding machine
GB1591603A (en) * 1978-05-05 1981-06-24 Dow Mac Concrete Ltd Mould vibrator unit
DE3049492C3 (en) * 1980-12-30 1995-10-12 Niemeyer Gmbh & Co Kg Soehne Machine for producing tubular bodies from concrete
DE3710186C1 (en) * 1987-03-27 1988-06-16 Hmb Maschb Gmbh Concrete-block mould
DE19508152A1 (en) * 1995-03-08 1996-09-12 Kobra Formen & Anlagenbau Gmbh Vibrating shape
DE10201960A1 (en) * 2002-01-19 2003-07-31 Kobra Formen Gmbh Mold for the production of moldings

Also Published As

Publication number Publication date
DE10333731A1 (en) 2005-03-10
DE502004003159D1 (en) 2007-04-19
WO2005009704A1 (en) 2005-02-03
ATE355947T1 (en) 2007-03-15
EP1651405A1 (en) 2006-05-03
ES2281809T3 (en) 2007-10-01
DK1651405T3 (en) 2007-05-29

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