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EP1651405A1 - Device and method for producing concrete moulded bodies - Google Patents

Device and method for producing concrete moulded bodies

Info

Publication number
EP1651405A1
EP1651405A1 EP04741190A EP04741190A EP1651405A1 EP 1651405 A1 EP1651405 A1 EP 1651405A1 EP 04741190 A EP04741190 A EP 04741190A EP 04741190 A EP04741190 A EP 04741190A EP 1651405 A1 EP1651405 A1 EP 1651405A1
Authority
EP
European Patent Office
Prior art keywords
mold
frame
mold frame
fluid
mold insert
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.)
Granted
Application number
EP04741190A
Other languages
German (de)
French (fr)
Other versions
EP1651405B1 (en
Inventor
Rudolf Braungardt
Erwin Schmucker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobra Formen GmbH
Original Assignee
Kobra Formen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kobra Formen GmbH filed Critical Kobra Formen GmbH
Publication of EP1651405A1 publication Critical patent/EP1651405A1/en
Application granted granted Critical
Publication of EP1651405B1 publication Critical patent/EP1651405B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B28B7/0002—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 producing molded concrete bodies in a molding machine and to a method for producing molded concrete bodies using such a device.
  • the molding frame is clamped in a molding machine and is pressed in the direction of the vibrating support for the vibrating operation. Via the connection of the mold frame and mold insert, the contact pressure exerted by the machine when the mold frame is pressed down is transferred to the mold insert and this is pressed firmly onto the vibrating support during the vibrating operation.
  • elastic damping plates are inserted between vertically opposing, obliquely aligned surfaces of the mold frame and mold insert, via which the contact pressure between the mold frame and mold insert is transmitted.
  • a particularly favorable pneumatic connection between the mold insert and the mold frame is advantageously provided and a defined contact pressure is set independently of the dimensional tolerances of the mold or the vibrating base.
  • 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.
  • the advantageously adjustable damping between the mold insert and the mold frame also takes over the adjustment of the pressing force of the mold insert on the vibrating base.
  • Fluid-filled hollow bodies are known per se in connection with concrete block molding machines, but in a different function and arrangement than in the present invention.
  • DE 3049492 A1 describes e.g. B. described a molding machine for concrete pipes, in which the inner pipe formwork is clamped via a fluid-filled hollow clamping ring with an internal unbalance vibrating device.
  • DE 42 12 702 A1 shows an inflatable cuff around part of a shaped block.
  • an unbalance vibrator is coupled to side moldings of a mold using an air bag.
  • the invention is illustrated in detail by means of preferred exemplary embodiments with reference to the figure.
  • the illustration shows a section in a vertical cross-sectional plane of a vibrating mold which has a mold frame FR and a mold insert FE in a manner known per se, the mold insert containing one or more mold cavities FN.
  • Projections and depressions on mutually facing sides of the mold insert and mold frame engage with one another with horizontal overlap, so that in the horizontal overlap area surfaces of the mold insert and mold frame, which serve to transmit a contact pressure from the mold frame to the mold insert (and the opposing counterforce), face 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 oriented obliquely and / or curved or structured.
  • these damping means are designed as hollow bodies HK, with a fluid being applied to the hollow space of the hollow body via a feed line RL, which can advantageously be designed as a ring line around the entire mold frame.
  • the fluid can be a liquid, in particular oil, or a gas, in particular compressed air.
  • the cavity and the feed line are part of a hollow chamber system.
  • flange strips FL are typically fastened to the mold frame and are made in one piece with corresponding cross strips of the mold frame or can advantageously also be rigidly connected to cross strips of the mold frame. The molding frame is clamped into the molding machine via the FL flange strips.
  • Running rails LS on the upper surface of the mold insert serve to guide a filling car, 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 support AP.
  • the fluid pressure in the hollow body HK and the hollow chamber system connected to it is preset to an initial value according to the present invention.
  • the hollow body HK which is elastically deformable, expands here until the mold frame strikes the mold insert, in particular a lower stop surface FFU, at its upper edge or preferably with a lower contact surface UA, preferably with the interposition of a damping element DE that cannot be compressed or can only be compressed slightly thus 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 the fluid pressure is set to an initial value, the pressing force on the damping element is increased, with further deformation of the damping element preferably being negligible.
  • the hollow chamber system is kept at this volume value, for example by sealing off a connecting line to a fluid source.
  • the mold frame FR is pressed downward in the direction of the support AP by sliding devices, for example hydraulic cylinders or the like, which are attached to the flange strips FL, the lower stop surface FFU being separated from the damping element DE lifts off and a force connection between the mold frame and mold insert only takes place between the surfaces RFO and FFO via the pressurized hollow body HK.
  • the fluid pressure in the hollow chamber system is monitored and the downward shift of the mold frame is stopped as soon as a predeterminable value of the fluid pressure is reached.
  • the mold frame or the displacement device is locked and fixed for the subsequent vibrating process. held.
  • the mold frame and with it the mold insert are typically lifted over the displacement devices, as a result of which the compressed concrete moldings are pressed downwards out of the mold nests FN and remain on the shaker base AP.
  • the concrete moldings are expressed on an existing layer of concrete moldings.
  • an initial situation for the vibrating operation which is defined with regard to the contact pressure and geometry of the hollow body, is achieved.
  • the dynamic properties of the mounting of the mold insert in the mold frame can be precisely specified and are not influenced by dimensional tolerances of the shape or the vibrating support AP.
  • the hollow chamber system can comprise a pressure reservoir and / or an expandable chamber. Hollow bodies are preferably inserted on all sides of the mold between the mold frame and mold insert.
  • a hollow body can be inserted opposite the hollow body shown in the sketch, instead of the damping element DE and the lower surface UA, which, based on the initial pressure, belongs to its own hollow chamber system, which is separate from the hollow chamber system of the hollow body HK.
  • the outlet pressure in the hollow chamber system can be variably specifiable and can thus be optimally adapted to the other manufacturing parameters, in particular the material to be compressed.
  • the use can also be carried out by the user himself, ie. H. typically in the concrete plant, changed and a defined pre-tension for the vibrating operation can be achieved again.
  • different mold inserts can be used with the mold frame remaining the same, so that the user only uses one mold frame which can also remain in the machine for longer and only the mold insert is exchanged when the stone shapes are changed.
  • the longitudinal strips of the mold frame connecting the opposite transverse strips are preferably detachably fastened to the transverse strips.

Landscapes

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

Bezeichnung der Erfindung Name of the invention

Vorrichtung und Verfahren zur Herstellung von Betonformkörpern.Device and method for the production of molded concrete bodies.

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 producing molded concrete bodies in a molding machine and to a method for producing molded concrete bodies 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 seiner- seits 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. 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.It is known to produce compacted concrete moldings in molding machines using vibrating devices. In the case of known devices, a shape is placed on a vibrating pad. Pneumatic devices which apply the contact pressure are typically provided between the molding machine and the mold. For example, a device is known from US Pat. No. 4,193,754, in which a mold is pressed by means of air bellows for vibrating operation onto a flat support that closes the mold cavity downward. While the mold in US Pat. No. 4,193,754 is made in one piece, newer molds are often made in two parts with a mold frame and a mold insert held therein with one or more mold nests. The mold insert is supported on a vibrating pad. The molding frame is clamped in a molding machine and is pressed in the direction of the vibrating support for the vibrating operation. Via the connection of the mold frame and mold insert, the contact pressure exerted by the machine when the mold frame is pressed down is transferred to the mold insert and this is pressed firmly onto the vibrating support during the vibrating operation. In a device known from EP 730 936 A1, elastic damping plates are inserted between vertically opposing, obliquely aligned surfaces of the mold frame and mold insert, via which the contact pressure between the mold frame and mold insert is transmitted. The object of the present invention is to provide an advantageous device of the type mentioned for the production of shaped concrete bodies and a method for producing shaped concrete bodies 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 Maß- toleranzen 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 übernimmt 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 the mold insert and the mold frame is advantageously provided and a defined contact pressure is set independently of the dimensional tolerances of the mold or the vibrating base. 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 advantageously adjustable damping between the mold insert and the mold frame also takes over the adjustment of the pressing force of the mold insert on the vibrating base.

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 3049492 A1 ist z. B. eine Formmaschine für Betonrohre beschrieben, bei welcher die innere Rohrschalung über einen fluid- gefüllten 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 molding machines, but in a different function and arrangement than in the present invention. DE 3049492 A1 describes e.g. B. described a molding machine for concrete pipes, in which the inner pipe formwork is clamped via a fluid-filled hollow clamping ring with an internal unbalance vibrating device. DE 42 12 702 A1 shows an inflatable cuff around part of a shaped block. In a vibrating mold known from GB 1 591 603, an unbalance vibrator is coupled to side moldings of a mold using an air bag.

Die Erfindung ist anhand bevorzugter Ausführungsbeispiele unter Bezugnahme auf die Abbildung noch eingehend veranschaulicht. 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 zugewand- ten 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 invention is illustrated in detail by means of preferred exemplary embodiments with reference to the figure. The illustration shows a section in a vertical cross-sectional plane of a vibrating mold which has a mold frame FR and a mold insert FE in a manner known per se, the mold insert containing one or more mold cavities FN. Projections and depressions on mutually facing sides of the mold insert and mold frame engage with one another with horizontal overlap, so that in the horizontal overlap area surfaces of the mold insert and mold frame, which serve to transmit a contact pressure from the mold frame to the mold insert (and the opposing counterforce), face vertically. In the example outlined, 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 oriented 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. Vor Ausübung einer Anpresskraft KM auf den Formrahmen wird gemäß der vorliegenden Erfindung der Fluiddruck im Hohlkörper HK und dem mit diesem verbundenen HohJkam ersystem 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 Dämp- fungselement 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 Ver- Schiebeeinrichtungen, 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 fest- gehalten. 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.In the present case, these damping means are designed as hollow bodies HK, with a fluid being applied to the hollow space of the hollow body via a feed line RL, which can advantageously be designed as a ring line around the entire mold frame. The fluid can be a liquid, in particular oil, or a gas, in particular compressed air. The cavity and the feed line are part of a hollow chamber system. On two sides of the mold frame, flange strips FL are typically fastened to the mold frame and are made in one piece with corresponding cross strips of the mold frame or can advantageously also be rigidly connected to cross strips of the mold frame. The molding frame is clamped into the molding machine via the FL flange strips. Running rails LS on the upper surface of the mold insert serve to guide a filling car, 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 support AP. Before exerting a pressing force KM on the mold frame, the fluid pressure in the hollow body HK and the hollow chamber system connected to it is preset to an initial value according to the present invention. The hollow body HK, which is elastically deformable, expands here until the mold frame strikes the mold insert, in particular a lower stop surface FFU, at its upper edge or preferably with a lower contact surface UA, preferably with the interposition of a damping element DE that cannot be compressed or can only be compressed slightly thus 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 the fluid pressure is set to an initial value, the pressing force on the damping element is increased, with further deformation of the damping element preferably being negligible. The hollow chamber system is kept at this volume value, for example by sealing off a connecting line to a fluid source. From this position of the mold frame relative to the mold insert, the mold frame FR is pressed downward in the direction of the support AP by sliding devices, for example hydraulic cylinders or the like, which are attached to the flange strips FL, the lower stop surface FFU being separated from the damping element DE lifts off and a force connection between the mold frame and mold insert only takes place between the surfaces RFO and FFO via the pressurized hollow body HK. During this shift, the fluid pressure in the hollow chamber system is monitored and the downward shift 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 fixed for the subsequent vibrating process. held. After the shaking process has ended, the mold frame and with it the mold insert are typically lifted over the displacement devices, as a result of which the compressed concrete moldings are pressed downwards out of the mold nests FN and remain on the shaker base AP. In the case of multi-layer production, the concrete moldings are expressed on an 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 for reaching a predeterminable setpoint, an initial situation for the vibrating operation, which is defined with regard to the contact pressure and geometry of the hollow body, is achieved. As a result, in particular the dynamic properties of the mounting of the mold insert in the mold frame can be precisely specified and are not influenced by dimensional tolerances of the shape or the vibrating support 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.Both a liquid or a gas and a mixture of the two can be considered as a fluid. The hollow chamber system can comprise a pressure reservoir and / or an expandable chamber. Hollow bodies are preferably 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 Drucküber- wachung kann dann auch eine Druckdifferenz zwischen den beiden Hohlkammersystemen, deren Druck sich gegenläufig verändert bei der Verschiebung des Formrahmens, überwacht werden. Der Ausgangsdruck in dem Hohlkammersystem kann variabel vorgebbar sein und so optimal auf die anderen Herstellungsparameter, insbesondere dem zu verdichtenden Material angepaßt werden.In another embodiment, a hollow body can be inserted opposite the hollow body shown in the sketch, instead of the damping element DE and the lower surface UA, which, based on the initial pressure, belongs to its own hollow chamber system, which is separate from the hollow chamber system of the hollow body HK. During pressure monitoring, a pressure difference between the two hollow chamber systems, the pressure of which changes in the opposite direction when the mold frame is displaced, can also be monitored. The outlet pressure in the hollow chamber system can be variably specifiable and can thus be optimally adapted to the other manufacturing parameters, in particular the material to be compressed.

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.Through the automatic setting of a defined operating pressure of the fluid in the hollow body, the use can also be carried out by the user himself, ie. H. typically in the concrete plant, changed and a defined pre-tension for the vibrating operation can be achieved again. This is also advantageous from the point of view that different mold inserts can be used with the mold frame remaining the same, so that the user only uses one mold frame which can also remain in the machine for longer and only the mold insert is exchanged when the stone shapes are changed. For this purpose, the longitudinal strips of the mold frame connecting the opposite transverse strips are preferably detachably fastened to the transverse strips.

Die vorstehend und die in den Ansprüchen angegebenen sowie die den Abbildungen entnehmbaren Merkmale sind sowohl einzeln als auch in verschiedener Kombination vorteilhaft realisierbar. Die Erfindung ist nicht auf die beschriebenen Ausführungsbeispiele beschränkt, sondern im Rahmen fachmännischen Könnens in mancherlei Weise abwandelbar. The features specified above and in the claims and those that can be seen in the figures can be advantageously implemented both individually and in various combinations. The invention is not limited to the exemplary embodiments described, but rather can be modified in many ways within the scope of expert knowledge.

Claims

Ansprüche Expectations 1. Vorrichtung zur Herstellung von Betonformkörpern mit einer Formmaschine und einer Form, welche einen Formrahmen und einen in diesem gehaltenen Formeinsatz enthält, wobei1. Device for producing concrete moldings with a molding machine and a mold which contains a mold frame and a mold insert held therein, wherein - der Formeinsatz auf eine Auflage absetzbar ist,- the mold insert can be placed on a support, - Verschiebemittel der Formmaschine unter einer Anpresskraft dem Formrahmen in Richtung der Auflage drücken,- Push the molding machine's displacement means against the molding frame in the direction of the support, - zwischen vertikal gegenüberstehende Flächen von Formrahmen (RFO) und Formeinsatz (FFO) fluidgefüllte Hohlkörper (HK) mit unter Überdruck stehendem Fluid eingefügt sind, über welche die Anpresskraft und Haltekräfte im Rüttelbetrieb zwischen Formrahmen und Formeinsatz übertragen,- Fluid-filled hollow bodies (HK) with pressurized fluid are inserted between vertically opposing surfaces of the mold frame (RFO) and mold insert (FFO), via which the contact pressure and holding forces are transferred between the mold frame and the mold insert during shaking, - eine Steuereinrichtung mit Mitteln zum Messen des Fluid- drucks und mit der Kraftquelle verbunden ist.- A control device with means for measuring the fluid pressure and is connected to the power source. 2. Verfahren zur Herstellung von Betonformkörpern mittels einer Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass2. A method for producing molded concrete bodies by means of a device according to claim 1, characterized in that - ohne das Vorliegen der Anpresskraft ein definierter Ausgangsüber- druck des Fluids in den Hohlkörpern eingestellt wird,a defined initial overpressure of the fluid in the hollow bodies is set without the presence of the contact force, - der Rahmen mittels Verschiebemitteln bei auf der Auflage aufgesetztem Formeinsatz, in Richtung der Auflage verschoben wird, - der Fluiddruck in der Hohlkörperanordnung überwacht wird,the frame is moved in the direction of the support by means of displacement means with the mold insert placed on the support, the fluid pressure in the hollow body arrangement is monitored, - bei Erreichen eines vorgebbaren Betriebswertes des Fluid- Überdrucks die Verschiebung des Formrahmens in Richtung der Auflage angehalten und der Formrahmen in dieser Stellung arretiert wird,when a predeterminable operating value of the fluid overpressure is reached, the displacement of the mold frame in the direction of the support is stopped and the mold frame is locked in this position, - der Rüttelvorgang bei arretierter Stellung des Formrahmens durchgeführt wird. - The shaking process is carried out with the mold frame locked.
EP04741190A 2003-07-23 2004-07-21 Device and method for producing concrete moulded bodies Expired - Lifetime 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 true EP1651405A1 (en) 2006-05-03
EP1651405B1 EP1651405B1 (en) 2007-03-07

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EP04741190A Expired - Lifetime EP1651405B1 (en) 2003-07-23 2004-07-21 Device and method for producing concrete moulded bodies

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

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* 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

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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

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Title
See references of WO2005009704A1 *

Also Published As

Publication number Publication date
DK1651405T3 (en) 2007-05-29
ATE355947T1 (en) 2007-03-15
DE502004003159D1 (en) 2007-04-19
DE10333731A1 (en) 2005-03-10
EP1651405B1 (en) 2007-03-07
ES2281809T3 (en) 2007-10-01
WO2005009704A1 (en) 2005-02-03

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