WO1998045070A1 - High compaction device for sand box molding machines using air impact - Google Patents
High compaction device for sand box molding machines using air impact Download PDFInfo
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- WO1998045070A1 WO1998045070A1 PCT/ES1997/000086 ES9700086W WO9845070A1 WO 1998045070 A1 WO1998045070 A1 WO 1998045070A1 ES 9700086 W ES9700086 W ES 9700086W WO 9845070 A1 WO9845070 A1 WO 9845070A1
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- Prior art keywords
- rubber plate
- sand
- air
- diffuser
- impact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/02—Compacting by pressing devices only
- B22C15/08—Compacting by pressing devices only involving pneumatic or hydraulic mechanisms
Definitions
- the present invention relates to a compaction device, which has been specially designed to be used in sandbox molding machines, by air impact, with which an extraordinarily high level of compaction is achieved.
- These machines are also equipped with a pressure application duct on the membrane so that it closes the air passage to the diffuser. Likewise, they have a residual air outlet duct after blowing which, through a pipe, is conducted towards the outside of the machine.
- the device that the invention proposes starting from a machine structuring similar to that described, achieves a high and uniform compaction of the sand without using mechanical means after air blowing.
- said rubber plate or the like is related to the diffuser by means of a support coaxially coupled with the diffuser and, in which interior, the rubber plate plays freely.
- This support is provided at its base with a plurality of holes that mostly affect it, through which respective treadmills or studs emerge, on which the rubber plate directly and freely rests and which are those that come into contact with the sand, through its lower limb.
- the tacos or treadmills which are supported on the sand contained in the molding box, are subjected to the thrust of the rubber plate on their heads and as a result they are projected on the sand compacting it.
- the rubber plate is suspended under the diffuser with the collaboration of cables that keep it horizontal, so that, when the molding box is coupled with the intermediation of the frame to said diffuser, the plate rubber is directly and freely resting on the surface of the sand Consequently, when the shot occurs, it receives the impact of air on its upper face and transmits it through the lower one to the mass of sand.
- several vertical plates are coupled, suitably distributed in its contour, whose mission is to keep the rubber plate timely guided in its upward movement when it is pushed by the frame and sandbox. These plates are introduced in the sand, as blades, when the frame and the molding box are coupled to the diffuser, allowing free support of the rubber plate on the surface of the sand mass.
- a rigid plate preferably metal, which directly and freely rests on the tacos or treadmills, tacos or treadmills that can also be hollow metal cylinders or of a low density material such as plastic.
- Figure 1 shows a schematic representation in side elevation and in section of a sandbox molding machine by air impact provided with the high compaction device that is the object of the present invention. It also has represented a plan view of the rubber plate with the distribution of the tacos or treadmills.
- Figure 2. Shows the operating cycle of the machine equipped with the high compaction device object of this invention corresponding to a preferred embodiment thereof.
- Figure 3. Shows a representation similar to that of Figure 1 of the same sandbox molding machine by air impact, but provided with a high compaction device made in accordance with an embodiment variant provided by the invention. . Likewise, a plan view of the rubber plate with the distribution of support cables has been represented.
- Figure 4.- Shows the operating cycle of the machine equipped with the high compaction device object of this invention corresponding to an embodiment variant provided by the invention.
- the rubber plate (10) is housed inside a support (15) coupled to the diffuser (4) so that it can slide in its interior, but without means of union between them
- the support (15) incorporates, by its lower part, a plurality of perforations through which tacos or treadmills (14) are intended to come into contact with the sand.
- the rubber plate (10) is simply resting on the heads of the studs (14).
- the rubber plate (10) is initially suspended from cables (12) that keep it horizontal so that when coupled to the diffuser (4) the frame (5 ') and sandbox (5), the rubber plate (10) is supported directly on the sand and ascends pushed by the frame (5') and sandbox (5). So things, when the air impact, it impacts against the upper face of the rubber plate (10) which, being in intimate contact with the sand, produces its compaction.
- a series of vertical plates or blades (11) are arranged in the lower part of the diffuser (4), intended to be introduced, when the molding box (5) is coupled to the diffuser (4) inside Of the sand.
- These blades (11) form a kind of frame inside which, the rubber plate (10) can move vertically, when it is pushed upwards by the box (5) and frame (5 '), but without any element fixing between the rubber plate (10) and the blades (11).
- the steel cables (12) are attached, at the other end, to the support plate (13) for fixing the annular membrane (3), the rubber plate (10) being suspended by the cables (12) and between the blades (11).
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- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
Description
DISPOSITIVO DE ALTA COMPACTACION PARA MAQUINAS DE MOLDEO DE CAJAS DE ARENA POR IMPACTO DE AIRE HIGH COMPACTION DEVICE FOR MOLDING MACHINES OF SAND BOXES BY AIR IMPACT
D E S C R I P C I Ó ND E S C R I P C I Ó N
OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION
La presente invención se refiere a un dispositivo de compactación, que ha sido especialmente concebido para ser utilizado en máquinas de moldeo de cajas de arena, por impacto de aire, con el que se consigue un nivel de compactación extraordinariamente alto.The present invention relates to a compaction device, which has been specially designed to be used in sandbox molding machines, by air impact, with which an extraordinarily high level of compaction is achieved.
ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION
En el ámbito de las máquinas para fabricación de cajas de arena que actúan por impacto de aire, son conocidos diversos dispositivos, como los descritos en las siguientes Patentes españolas:In the field of machines for manufacturing sandboxes that act by air impact, various devices are known, such as those described in the following Spanish patents:
- Patente europea n^ o 334 787, con prioridad de la Patente española n_ 8800859, por: "MEJORAS INTRODUCIDAS EN CAMPANAS DE AIRE POR ONDA EXPANSIVA".- European Patent No. 334 787, with priority of Spanish Patent No. 8800859, for: "IMPROVEMENTS INTRODUCED IN AIR BELLS BY EXPANSIVE WAVE".
- Patente española ns 9400844, por: "CABEZAL PARA- Spanish patent ns 9400844, for: "HEAD FOR
MAQUINA DE MOLDEO DE CAJAS DE ARENA POR IMPACTO DE AIRE Y PRENSADO POSTERIOR"SAND BOX MOLDING MACHINE FOR AIR IMPACT AND REAR PRESSING "
- Solicitud de Patente europea n^ 95500159.9, con prioridad de la Patente española n^ 9402464, por:- European Patent Application No. 95500159.9, with priority of Spanish Patent No. 9402464, for:
"CABEZAL MEJORADO PARA MAQUINAS DE MOLDEO DE CAJAS DE ARENA CON IMPACTO DE AIRE""IMPROVED HEAD FOR ARENA CASE MOLDING MACHINES WITH AIR IMPACT"
- Patente española ne 9500500, por: "DISPOSITIVO DE COMPACTACIÓN MEJORADO PARA MAQUINAS DE FABRICACIÓN DE CAJAS DE ARENA POR IMPACTO DE AIRE"- Spanish patent ne 9500500, for: "IMPROVED COMPACTION DEVICE FOR MANUFACTURING MACHINES OF SAND BOXES BY AIR IMPACT "
Todas estas Patentes se refieren a máquinas compuestas por un calderín que suministra el aire de soplado a una cámara en cuyo seno se establece una membrana anular que abre o cierra el paso del aire contenido en la cámara hacia el difusor, permitiendo, cuando está abierta la comunicación, que se realice la compactación de la arena contenida en la caja de moldeo, dispuesta inmediatamente a continuación del difusor.All these patents refer to machines composed of a boiler that supplies the blowing air to a chamber in which an annular membrane is established that opens or closes the passage of the air contained in the chamber towards the diffuser, allowing, when the communication, that the compaction of the sand contained in the molding box is made, arranged immediately after the diffuser.
Esta máquinas están dotadas, asimismo, de un conducto de aplicación de presión sobre la membrana para que ésta cierre el paso de aire hacia el difusor. Asimismo, cuentan con un conducto de salida de aire residual después del soplado que, a través de una canalización, es conducido hacia el exterior de la máquina.These machines are also equipped with a pressure application duct on the membrane so that it closes the air passage to the diffuser. Likewise, they have a residual air outlet duct after blowing which, through a pipe, is conducted towards the outside of the machine.
Pues bien, estas máquinas realizan la compactación mediante el soplado de aire sobre la arena contenida en la caja de moldeo y, en algunas de ellas, se produce una compactación mecánica posterior mediante pisadores, colchones de agua y similares, destinados a mejorar la compactación de la arena.Well, these machines perform the compaction by blowing air on the sand contained in the molding box and, in some of them, there is a subsequent mechanical compaction using treadmills, water mattresses and the like, aimed at improving the compaction of the sand.
DESCRIPCIÓN DE LA INVENCIÓNDESCRIPTION OF THE INVENTION
El dispositivo que la invención propone, partiendo de una estructuración de máquina similar a la descrita, consigue una alta y uniforme compactación de la arena sin necesidad de utilizar medios mecánicos posteriores al soplado de aire.The device that the invention proposes, starting from a machine structuring similar to that described, achieves a high and uniform compaction of the sand without using mechanical means after air blowing.
Para ello, se ha previsto que entre el difusor y la arena a compactar se establezca una placa de goma que, cuando la caja de moldeo con la intermediación del correspondiente marco se acopla al difusor y se produce el impacto de aire, éste no se realiza directamente sobre la arena contenida en la caja de moldeo, sino con la intermediación de la placa de goma que recibe el impacto del aire de soplado por una de sus caras y lo transmite a la masa de arena, bien directamente o con la intermediación de tacos o pisadores, provocando así la perseguida alta y uniforme compactación de la arena.For this, it is planned that between the diffuser and the sand to be compacted establishes a rubber plate that, when the molding box with the intermediation of the corresponding frame is coupled to the diffuser and the air impact occurs, it is not made directly on the sand contained in the molding box, but with the intermediation of the rubber plate that receives the impact of the air of blown by one of its faces and transmits it to the mass of sand, either directly or with the intermediation of tacos or treadmills, thus causing the pursued high and uniform compaction Of the sand.
De forma más concreta y de acuerdo con una variante preferente de realización del dispositivo, la citada placa de goma o similar está relacionada con el difusor mediante un soporte acoplado coaxialmente con el difusor y, en cuyo interior, juega libremente la placa de goma. Este soporte está provisto en su base de una pluralidad de orificios que le afectan mayoritaria ente, a través de los cuales emergen respectivos pisadores o tacos, sobre los que apoya directa y libremente la placa de goma y que son los que entran en contacto con la arena, a través de su extremidad inferior. De esta forma, cuando se produce el disparo, los tacos o pisadores, que se encuentran apoyados sobre la arena contenida en la caja de moldeo, se ven sometidos al empuje de la placa de goma sobre sus cabezas y como consecuencia se proyectan sobre la arena compactándola.More specifically and in accordance with a preferred embodiment of the device, said rubber plate or the like is related to the diffuser by means of a support coaxially coupled with the diffuser and, in which interior, the rubber plate plays freely. This support is provided at its base with a plurality of holes that mostly affect it, through which respective treadmills or studs emerge, on which the rubber plate directly and freely rests and which are those that come into contact with the sand, through its lower limb. In this way, when the shot occurs, the tacos or treadmills, which are supported on the sand contained in the molding box, are subjected to the thrust of the rubber plate on their heads and as a result they are projected on the sand compacting it.
De acuerdo con otra variante de realización del dispositivo la placa de goma queda suspendida bajo el difusor con la colaboración de unos cables que la mantienen horizontal, de manera que, al acoplarse la caja de moldeo con la intermediación del marco al citado difusor, la placa de goma queda directa y libremente apoyada sobre la superficie de la arena consecuencia, cuando se produce el disparo, recibe el impacto de aire en su cara superior y lo transmite a través de la inferior a la masa de arena. En la embocadura del difusor se acoplan, adecuadamente distribuidas en su contorno, varias pletinas verticales, cuya misión es mantener oportunamente guiada la placa de goma en su desplazamiento ascendente cuando es empujada por el marco y caja de arena. Estas pletinas se introduce en la arena, a modo de cuchillas, cuando el marco y la caja de moldeo se acoplan al difusor, permitiendo el apoyo libre de la placa de goma sobre la superficie de la masa de arena.According to another variant of the device, the rubber plate is suspended under the diffuser with the collaboration of cables that keep it horizontal, so that, when the molding box is coupled with the intermediation of the frame to said diffuser, the plate rubber is directly and freely resting on the surface of the sand Consequently, when the shot occurs, it receives the impact of air on its upper face and transmits it through the lower one to the mass of sand. At the mouth of the diffuser, several vertical plates are coupled, suitably distributed in its contour, whose mission is to keep the rubber plate timely guided in its upward movement when it is pushed by the frame and sandbox. These plates are introduced in the sand, as blades, when the frame and the molding box are coupled to the diffuser, allowing free support of the rubber plate on the surface of the sand mass.
En otra variante de realización, se puede utilizar como elemento transmisor del impacto del aire de soplado de arena, una plancha rígida, preferentemente metálica, que apoya directa y libremente sobre los tacos o pisadores, tacos o pisadores que igualmente pueden ser cilindros metálicos huecos o de un material de baja densidad tal y como plástico.In another variant embodiment, it is possible to use as a transmitting element of the impact of the sand blowing air, a rigid plate, preferably metal, which directly and freely rests on the tacos or treadmills, tacos or treadmills that can also be hollow metal cylinders or of a low density material such as plastic.
DESCRIPCIÓN DE LOS DIBUJOSDESCRIPTION OF THE DRAWINGS
Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características de la invención, se acompaña a la presente memoria descriptiva, como parte integrante de la misma, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente:To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, a set of drawings is attached as an integral part thereof, with an illustrative character and not limiting, the following has been represented:
La figura 1.- Muestra una representación esquemática en alzado lateral y en sección de una máquina de moldeo de cajas de arena por impacto de aire dotada del dispositivo de alta compactación que constituye el objeto de la presente invención. Asimismo, se ha representado una vista en planta de la placa de goma con la distribución de los tacos o pisadores.Figure 1 shows a schematic representation in side elevation and in section of a sandbox molding machine by air impact provided with the high compaction device that is the object of the present invention. It also has represented a plan view of the rubber plate with the distribution of the tacos or treadmills.
La figura 2.- Muestra el ciclo de funcionamiento de la máquina dotada del dispositivo de alta compactación objeto de esta invención correspondiente a una realización preferente del mismo.Figure 2.- Shows the operating cycle of the machine equipped with the high compaction device object of this invention corresponding to a preferred embodiment thereof.
La figura 3.- Muestra una representación similar a la de la figura 1 de la misma máquina de moldeo de cajas de arena por impacto de aire, pero provista de un dispositivo de alta compactación realizado de acuerdo con una variante de realización prevista por la invención. Asimismo, se ha representado una vista en planta de la placa de goma con la distribución de cables de sustentación .Figure 3.- Shows a representation similar to that of Figure 1 of the same sandbox molding machine by air impact, but provided with a high compaction device made in accordance with an embodiment variant provided by the invention. . Likewise, a plan view of the rubber plate with the distribution of support cables has been represented.
La figura 4.- Muestra el ciclo de funcionamiento de la máquina dotada del dispositivo de alta compactación objeto de esta invención correspondiente a una variante de realización prevista por la invención.Figure 4.- Shows the operating cycle of the machine equipped with the high compaction device object of this invention corresponding to an embodiment variant provided by the invention.
REALIZACIÓN PREFERENTE DE LA INVENCIÓNPREFERRED EMBODIMENT OF THE INVENTION
A la vista de estas figuras y, más concretamente, de las figuras 1 y 3, puede observarse cómo el dispositivo que se preconiza es aplicable a máquinas compuestas por un calderín (1) que suministra el aire de soplado a una cámara (2) en cuyo seno se establece una membrana anular (3) que abre o cierra el paso del aire contenido en la cámara (2) al difusor (4), permitiendo, cuando está abierta la comunicación, que se realice la compactación de la arena contenida en la caja de moldeo (5) , dispuesta inmediatamente a continuación del difusor (4) . Esta máquinas están dotadas, asimismo, de un conducto (6) de aplicación de presión sobre la membranaIn view of these figures and, more specifically, of Figures 1 and 3, it can be seen how the device that is recommended is applicable to machines composed of a boiler (1) that supplies the blowing air to a chamber (2) in whose sinus an annular membrane (3) is established that opens or closes the passage of the air contained in the chamber (2) to the diffuser (4), allowing, when the communication is open, that the sand contained in the sand is compacted. molding box (5), arranged immediately after the diffuser (4). These machines are also equipped with a duct (6) for applying pressure on the membrane
(3) para que ésta cierre el paso de aire hacia el difusor(3) so that it closes the air passage to the diffuser
(4) . Asimismo, contando con conducto (7) de salida de aire residual después del soplado que, a través de una canalización (8) es conducido hacia el exterior de la misma.(4) . Likewise, having a residual air outlet duct (7) after blowing which, through a duct (8) is conducted outside it.
Pues bien, a partir de esta estructuración básica se ha previsto la utilización de una placa de goma (10), interpuesta entre el difusor (4) y la arena a compactar, de tal manera que, al producirse el disparo, el aire impacta en la cara superior de la placa de goma (10) que, bien directamente a través de su otra cara o bien con la intermediación de pisadores o tacos (14), produce la compactación de la arena.Well, from this basic structuring, the use of a rubber plate (10), interposed between the diffuser (4) and the sand to be compacted, is planned, so that when the shot occurs, the air impacts the upper face of the rubber plate (10) which, either directly through its other face or with the intermediation of treadmills or studs (14), produces sand compaction.
Según una primera realización preferente de la invención, la mostrada en las figuras 1 y 2, la placa de goma (10) se encuentra alojada en el interior de un soporte (15) acoplado al difusor (4) de forma que puede deslizarse en su interior, pero sin medios de unión entre ellos. El soporte (15) incorpora, por su parte inferior, una pluralidad de perforaciones a través de las cuales son pasantes unos tacos o pisadores (14) destinados a entrar en contacto con la arena. La placa de goma (10) está simplemente apoyada sobre las cabezas de los tacos o pisadores (14) .According to a first preferred embodiment of the invention, that shown in Figures 1 and 2, the rubber plate (10) is housed inside a support (15) coupled to the diffuser (4) so that it can slide in its interior, but without means of union between them The support (15) incorporates, by its lower part, a plurality of perforations through which tacos or treadmills (14) are intended to come into contact with the sand. The rubber plate (10) is simply resting on the heads of the studs (14).
El funcionamiento, según esta realización, sería el siguiente:The operation, according to this embodiment, would be as follows:
- Antes de acoplar la caja de moldeo (5) , con la intermediación del marco (5'), a la máquina de soplado, la placa de goma (10) , con sus tacos o pisadores (14) se encuentra simplemente apoyada en el soporte (15) quedando los tacos o pisadores (14) suspendidos y retenidos por la base del soporte por sus cabezas. Secuencia A de la figura 2.- Before attaching the molding box (5), with the intermediation of the frame (5 '), to the blowing machine, the rubber plate (10), with its plugs or treadmills (14) It is simply resting on the support (15), leaving the studs (14) suspended and held by the base of the support by their heads. Sequence A of Figure 2.
- El movimiento ascendente de la caja (5) y marco de moldeo (5') para acoplarse a la máquina, hacen que la arena contenida en la caja contacte con el extremo inferior de los tacos o pisadores (14) que se ven así obligados a ascender empujando, a su vez, hacia arriba la placa de goma (10) que se desliza en el interior del soporte (15). Secuencia B de la figura 2.- The upward movement of the box (5) and molding frame (5 ') to engage the machine, make the sand contained in the box contact the lower end of the studs (14) that are thus forced to be promoted by pushing, in turn, the rubber plate (10) that slides inside the support (15). Sequence B of Figure 2.
- Una vez que la caja (5) con el marco (5') se han acoplado al difusor (4) y con los tacos o pisadores apoyados directamente sobre la arena, se produce el soplado del aire que impacta contra la cara superior de la placa de goma (10) que a su vez transmite el empuje del aire a los tacos o pisadores (14) proyectándolos simultáneamente contra la arena produciendo su compactación. Secuencia C de la figura 2.- Once the box (5) with the frame (5 ') has been coupled to the diffuser (4) and with the tacos or treadmills resting directly on the sand, air is blown that hits the upper face of the rubber plate (10) which in turn transmits the air thrust to the studs (14) simultaneously projecting them against the sand producing its compaction. Sequence C of Figure 2.
- Finalmente, se retira la placa modelo de la máquina, con lo que se puede extraer el molde formado y la máquina queda lista para iniciar un nuevo ciclo de funcionamiento. Secuencia D de la figura 2.- Finally, the model plate is removed from the machine, with which the formed mold can be removed and the machine is ready to start a new operating cycle. Sequence D of Figure 2.
De acuerdo con una segunda realización de la invención, mostrada en las figuras 3 y 4, la placa de goma (10) se encuentra inicialmente suspendida de unos cables (12) que la mantienen horizontal de manera que al acoplarse al difusor (4) el marco (5') y caja de arena (5), la placa de goma (10) queda apoyada directamente sobre la arena y asciende empujada por el marco (5') y caja de arena (5). Así las cosas, cuando se produce el impacto de aire, éste incide contra la cara superior de la placa de goma (10) que, al estar en contacto íntimo con la arena, produce la compactación de ésta.According to a second embodiment of the invention, shown in Figures 3 and 4, the rubber plate (10) is initially suspended from cables (12) that keep it horizontal so that when coupled to the diffuser (4) the frame (5 ') and sandbox (5), the rubber plate (10) is supported directly on the sand and ascends pushed by the frame (5') and sandbox (5). So things, when the air impact, it impacts against the upper face of the rubber plate (10) which, being in intimate contact with the sand, produces its compaction.
Asimismo, se ha previsto que en la parte inferior del difusor (4) se dispongan una serie de pletinas o cuchillas verticales (11), destinadas a introducirse, cuando la caja de moldeo (5) se acopla al difusor (4) en el interior de la arena. Estas cuchillas (11) conforman una especie de marco en el interior del cual, puede desplazarse verticalmente la placa de goma (10), cuando es empujada ascendentemente por la caja (5) y marco (5'), pero sin que exista ningún elemento de fijación entre la placa de goma (10) y las cuchillas (11). Los cables de acero (12) se amarran, por su otro extremo, a la placa soporte (13) de fijación de la membrana anular (3) , quedando la placa de goma (10) suspendida por los cables (12) y entre las cuchillas (11) .It is also provided that a series of vertical plates or blades (11) are arranged in the lower part of the diffuser (4), intended to be introduced, when the molding box (5) is coupled to the diffuser (4) inside Of the sand. These blades (11) form a kind of frame inside which, the rubber plate (10) can move vertically, when it is pushed upwards by the box (5) and frame (5 '), but without any element fixing between the rubber plate (10) and the blades (11). The steel cables (12) are attached, at the other end, to the support plate (13) for fixing the annular membrane (3), the rubber plate (10) being suspended by the cables (12) and between the blades (11).
Así las cosas, el funcionamiento será el siguiente:Thus, the operation will be as follows:
- Antes de acoplar la caja de moldeo (5) , con la intermediación del marco (5'), a la máquina, la placa de goma (10) permanecerá suspendida por los cables (12) . Secuencia A de la figura 4.- Before attaching the molding box (5), with the intermediation of the frame (5 '), to the machine, the rubber plate (10) will remain suspended by the cables (12). Sequence A of Figure 4.
- El movimiento ascendente de la caja (5) y marco de moldeo (5') para acoplarse a la máquina, hacen que la arena contenida en la caja (5) contacte con la placa de goma (10) empujándola hacia arriba en su movimiento ascendente. La placa de goma (10) se desplaza guiada por las cuchillas (11) que se introducen en la arena de moldeo, hasta que la caja de moldeo (5) queda acoplada al difusor (4). La placa de goma (10) está en ese momento directa y libremente apoyada sobre la masa de arena. Secuencia B de la figura 4.- The upward movement of the box (5) and molding frame (5 ') to engage the machine, make the sand contained in the box (5) contact the rubber plate (10) pushing it up in its movement upward. The rubber plate (10) moves guided by the blades (11) that are introduced into the molding sand, until the molding box (5) is coupled to the diffuser (4). The rubber plate (10) is currently directly and freely supported on the sand mass. Sequence B of Figure 4.
- Se produce el soplado del aire que impacta contra una de las caras de la placa de goma (10) que, a su vez, incide contra la arena y la compacta adoptando, la placa de goma después de la compactación, una morfología aproximada a la de la placa modelo contenida en el interior de la caja de moldeo (5) . Secuencia C de la figura 4.- There is a blow of the air that impacts against one of the faces of the rubber plate (10) which, in turn, impacts the sand and the compact adopting, the rubber plate after compaction, an approximate morphology of that of the model plate contained inside the molding box (5). Sequence C of Figure 4.
- Finalmente, se retira la placa modelo de la máquina, con lo que se puede extraer el molde formado y la máquina queda lista para iniciar un nuevo ciclo de funcionamiento. Secuencia D de la figura 2. Secuencia D de la figura 4.- Finally, the model plate is removed from the machine, with which the formed mold can be removed and the machine is ready to start a new operating cycle. Sequence D of Figure 2. Sequence D of Figure 4.
Con este método se consigue una gran compactación de la arena, a la vez que uniforme, independientemente de la forma de la placa modelo.With this method a great compaction of the sand is achieved, while uniform, regardless of the shape of the model plate.
No se considera necesario hacer más extensa esta descripción para que cualquier experto en la materia comprenda el alcance de la invención y las ventajas que de la misma se derivan.It is not considered necessary to make this description more extensive so that any person skilled in the art understands the scope of the invention and the advantages derived therefrom.
Los materiales, forma, tamaño y disposición de los elementos serán susceptibles de variación siempre y cuando ello no suponga una alteración en la esencialidad del invento.The materials, shape, size and arrangement of the elements will be subject to variation as long as this does not imply an alteration in the essentiality of the invention.
Los términos en que se ha redactado esta memoria deberán ser tomados siempre en sentido amplio y no limitativo. The terms in which this report has been written must always be taken in a broad and non-limiting sense.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/ES1997/000086 WO1998045070A1 (en) | 1997-04-08 | 1997-04-08 | High compaction device for sand box molding machines using air impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/ES1997/000086 WO1998045070A1 (en) | 1997-04-08 | 1997-04-08 | High compaction device for sand box molding machines using air impact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998045070A1 true WO1998045070A1 (en) | 1998-10-15 |
Family
ID=8297903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES1997/000086 Ceased WO1998045070A1 (en) | 1997-04-08 | 1997-04-08 | High compaction device for sand box molding machines using air impact |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1998045070A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4170258A (en) * | 1977-09-23 | 1979-10-09 | Gartland William R | Mold making machine |
| US4254816A (en) * | 1978-10-05 | 1981-03-10 | Inventio Ag | Apparatus for manufacturing mold parts |
| US4289194A (en) * | 1979-04-11 | 1981-09-15 | Sintokogio Ltd. | Molding machine |
| US4538664A (en) * | 1982-03-23 | 1985-09-03 | Bmd Badische Maschinenfabrik Durlach Gmbh | Process and apparatus for compacting mold material |
| US4592406A (en) * | 1983-05-11 | 1986-06-03 | Bmd Badisch Maschinenfabrik Durlach Gmbh | Apparatus for compacting foundry sand |
| EP0334787A2 (en) * | 1988-03-21 | 1989-09-27 | Lopez de Foronda Fernandez, Vicente | Improvements introduced in airvessels for molding by expansive waves |
| EP0720878A1 (en) * | 1994-12-09 | 1996-07-10 | Sintokogio, Ltd. | Apparatus for producing moulds |
-
1997
- 1997-04-08 WO PCT/ES1997/000086 patent/WO1998045070A1/en not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4170258A (en) * | 1977-09-23 | 1979-10-09 | Gartland William R | Mold making machine |
| US4254816A (en) * | 1978-10-05 | 1981-03-10 | Inventio Ag | Apparatus for manufacturing mold parts |
| US4289194A (en) * | 1979-04-11 | 1981-09-15 | Sintokogio Ltd. | Molding machine |
| US4538664A (en) * | 1982-03-23 | 1985-09-03 | Bmd Badische Maschinenfabrik Durlach Gmbh | Process and apparatus for compacting mold material |
| US4592406A (en) * | 1983-05-11 | 1986-06-03 | Bmd Badisch Maschinenfabrik Durlach Gmbh | Apparatus for compacting foundry sand |
| EP0334787A2 (en) * | 1988-03-21 | 1989-09-27 | Lopez de Foronda Fernandez, Vicente | Improvements introduced in airvessels for molding by expansive waves |
| EP0720878A1 (en) * | 1994-12-09 | 1996-07-10 | Sintokogio, Ltd. | Apparatus for producing moulds |
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