WO2001060548A1 - Blow head for core blowing machines - Google Patents
Blow head for core blowing machines Download PDFInfo
- Publication number
- WO2001060548A1 WO2001060548A1 PCT/ES2001/000050 ES0100050W WO0160548A1 WO 2001060548 A1 WO2001060548 A1 WO 2001060548A1 ES 0100050 W ES0100050 W ES 0100050W WO 0160548 A1 WO0160548 A1 WO 0160548A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blow
- head
- plate
- sand
- nozzles
- 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.)
- Ceased
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
- B22C15/245—Blowing tubes
Definitions
- the present invention relates to a blowing head for male blowing machines, which is part of the blowing unit that is located above the corresponding male box of the machine.
- the object of the invention is to provide the industrial sector that uses male blowing machines, a head with structural and design characteristics that allow the use of sand to be optimized, which is used in the amount practically necessary for each blow, at while allowing sand losses in the operations of changing the blow plate and cleaning it, to be greatly reduced.
- blow head In the male blowing machines, there is a fundamental unit called the blow head, which is located above the male drop on which the sand is blown.
- This blowing unit basically comprises three elements: blow cartridge, blow head itself and blow plate.
- the cartridge receives the necessary dose of sand in each blowing operation and through it the sand accesses the blowing head, passing from this to the blow plate where a series of nozzles are established, for the passage of the sand to the male box.
- blow plate must be replaced by another when the male box is changed, to adapt it to the new tooling.
- blowing head that is recommended has been conceived to solve the problem described above and to achieve other advantages that will be exposed throughout this description.
- the head of the invention presents its configuration as a novel feature, so that instead of being clearly trunk-pyramidal as traditionally occurs, the head is substantially flat, so that the camera determined therein looks remarkably reduced and therefore retains less sand, so that when disassembling the blow plate attached to the head, for cleaning or replacement of any of the components, the amount of sand that is lost will be less.
- the flat and basically solid blow plate has grooves that project from its middle area towards the areas where there are blow nozzles, originating with This is an optimal use of sand and, of course, a better compaction of the males.
- the blow head can take the form of a small tray that, together with the blow head, determine a small volume chamber, which allows the use of the Optimum amount of sand in each blow, while the tray form of the blow plate facilitates the retention of the sand in the maneuver of changing the appointment of the blow plate.
- the cleaning operation is facilitated, with the consequent reduction of the time used.
- a better compaction of the sand is obtained to obtain the corresponding males, to be directed that one through channels towards the blow nozzles.
- the air consumption is optimized and the residual air is reduced, while reducing also, consequently, the discharge time of said residual air.
- Figure 1. Shows a vertical sectional view of the blow head made in accordance with the object of the invention.
- Figure 2. Shows an interior plan view of the blow plate, showing the channels that direct the sand towards the corresponding blow nozzles.
- Figure 3. Shows a top perspective view of said blow plate.
- Figure 4. It shows a sectional view like that of figure 1, in the version in which the blower head adopts the configuration of a tray.
- Figure 5. Shows a top plan view of the head shown in the previous figure.
- the blow head object of the invention includes, as is conventional, a blow cartridge (1), a blow head itself (2) and a blow plate (3) , so that the sand coming from a hopper accesses through the cartridge (1) towards the head (2) and from this one towards the blowing plate
- Both the cartridge (1) and the blow plate (3) are conveniently fixed to the blow head (2) by any appropriate system.
- the blow head (2) has a flat configuration, as clearly seen in Figure 1, so that the volume of the blow chamber is left determined by the neck (4), axial extension and with virtually no continuity solution of the cartridge (1) and by the channels (6), established in the blow plate (3), which is also flat and mostly solid, channels ( 6) made in the appropriate direction so that they communicate the neck (4) of the blow head itself (2) with the corresponding blow nozzles (5) associated to the bottom face of the plate (3).
- the volumetry of the blow chamber (4-6) reduced dramatically, but also when the sand is forced to flow through the channels
- the blow head (2 ') has a trunk-pyramidal configuration, flattened, or what is the same a trapecial configuration according to a side sectional view of the head itself, of so that this configuration is also reduced the capacity or volume of the blow chamber (4-4 ') of the head itself (2'), although not so drastically with in the previous case, a dump (6 'being provided in this version ) on the blower plate (3), replacing the channels (6), with a step (3 '), all of which configures a tray blower plate.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
CABEZAL DE SOPLADO PARA MAQUINAS SOPLADORAS DE MACHOS BLOWING HEAD FOR MALE BLOWING MACHINES
D E S C R I P C I O ND E S C R I P C I O N
OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION
La presente invención se refiere a un cabezal de soplado para máquinas sopladoras de machos, el cual forma parte de la unidad de soplado que se sitúa por encima de la correspondiente caja de machos de la máquina.The present invention relates to a blowing head for male blowing machines, which is part of the blowing unit that is located above the corresponding male box of the machine.
El objeto de la invención es proporcionar al sector industrial que emplea máquinas sopladoras de machos, un cabezal con unas características estructurales y de diseño que permiten optimizar el empleo de la arena, la cual se emplea en la cantidad prácticamente necesaria para cada soplado, a la vez que permite que las perdidas de arena en las operaciones de cambio de la placa de soplado y limpieza de la misma, se vean reducidas muy notablemente .The object of the invention is to provide the industrial sector that uses male blowing machines, a head with structural and design characteristics that allow the use of sand to be optimized, which is used in the amount practically necessary for each blow, at while allowing sand losses in the operations of changing the blow plate and cleaning it, to be greatly reduced.
ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION
En las máquinas sopladoras de machos, existe una unidad fundamental denominada cabezal de soplado, que queda situada por encima de la ca a de machos sobre la que se realiza el soplado de la arena.In the male blowing machines, there is a fundamental unit called the blow head, which is located above the male drop on which the sand is blown.
Esa unidad de soplado comprende fundamentalmente tres elementos: cartucho de soplado, cabezal de soplado propiamente dicho y placa de soplado. El cartucho recibe la dosis de arena necesaria en cada operación de soplado y a través de él la arena accede al cabezal de soplado, pasando de éste a la placa de soplado donde están establecidas una serie de boquillas, para paso de la arena hacia la caja de machos.This blowing unit basically comprises three elements: blow cartridge, blow head itself and blow plate. The cartridge receives the necessary dose of sand in each blowing operation and through it the sand accesses the blowing head, passing from this to the blow plate where a series of nozzles are established, for the passage of the sand to the male box.
Debido al tipo de material utilizado, en muchos casos arena con aglomerante, es necesario llevar a cabo una limpieza tanto de las placas de soplado como del propio cabezal, de manera que para realizar estas operaciones es necesario desmontar la placa de soplado.Due to the type of material used, in many cases sand with binder, it is necessary to clean both the blow plates and the head itself, so that to perform these operations it is necessary to disassemble the blow plate.
Así mismo, la placa de soplado debe ser sustituida por otra cuando se cambia la caja de machos, para adecuarla al nuevo utillaje.Also, the blow plate must be replaced by another when the male box is changed, to adapt it to the new tooling.
Pues bien, ya sea por la necesidad de tener que cambiar las placas de soplado, bien por necesidad de tener que efectuar la limpieza correspondiente, ese desmontaje de las placas de soplado trae consigo la caída y correspondiente pérdida de arena que queda almacenada en el cartucho y en el propio cabezal de soplado, de manera que la cantidad de arena que se pierde por caída resulta notable debido a la configuración de los cabezales convencionales de soplado, que son de configuración tronco-piramidal, en los que se define una amplia cámara entre el cartucho de soplado y el cabezal de soplado, en la que queda acumulada una gran cantidad de arena, buena de la parte de la cual se derrama o pierde en la maniobra de cambio de la placa de soplado.Well, either because of the need to have to change the blow plates, or because of the need to have to perform the corresponding cleaning, that disassembly of the blow plates brings with it the fall and corresponding loss of sand that is stored in the cartridge and in the blow head itself, so that the amount of sand that is lost due to fall is notable due to the configuration of conventional blow heads, which are of trunk-pyramidal configuration, in which a wide chamber is defined between the blow cartridge and the blow head, in which a large amount of sand is accumulated, good of the part of which is spilled or lost in the change maneuver of the blow plate.
Se propone, pues, un cabezal que permita optimizar el consumo de arena y que, a la vez, permita un rápido cambio en la placa de soplado, minimizando las pérdidas de arena en dicha maniobra. DESCRIPCIÓN DE LA INVENCIÓNIt is proposed, therefore, a head that allows to optimize the consumption of sand and, at the same time, allows a rapid change in the blowing plate, minimizing the losses of sand in said maneuver. DESCRIPTION OF THE INVENTION
El cabezal de soplado que se preconiza ha sido concebido para resolver la problemática anteriormente expuesta y para conseguir otras ventajas que se irán exponiendo a lo largo de la presente descripción.The blowing head that is recommended has been conceived to solve the problem described above and to achieve other advantages that will be exposed throughout this description.
Más concretamente, el cabezal de la invención presenta como una característica de novedad su configuración, de manera que en lugar de ser claramente tronco-piramidal como ocurre tradicionalmente , el cabezal es sustancialmente plano, con lo que la cámara determinada en el mismo se ve notablemente reducida y por lo tanto retiene menos arena, de manera que a la hora de desmontar la placa de soplado fijada al cabezal, para limpieza o sustitución de cualquiera de los componentes, la cantidad de arena que se pierde será menor.More specifically, the head of the invention presents its configuration as a novel feature, so that instead of being clearly trunk-pyramidal as traditionally occurs, the head is substantially flat, so that the camera determined therein looks remarkably reduced and therefore retains less sand, so that when disassembling the blow plate attached to the head, for cleaning or replacement of any of the components, the amount of sand that is lost will be less.
Es también característica de novedad del cabezal de soplado objeto de la invención, el hecho de que la placa de soplado, plana y básicamente maciza, cuenta con unas acanaladuras que se proyectan desde su zona media hacia las zonas donde existen boquillas de soplado, originando con ello uno óptimo aprovechamiento de arena y, por supuesto, una mejor compactación de los machos.It is also characteristic of novelty of the blowing head object of the invention, the fact that the flat and basically solid blow plate has grooves that project from its middle area towards the areas where there are blow nozzles, originating with This is an optimal use of sand and, of course, a better compaction of the males.
Adicionalmente a estas ventajas, resulta que la cantidad de arena acumulada en las acanaladuras es mínima y, consecuentemente, mínima la cantidad de arena que se pierde o que es preciso controlar a la hora de cambiar la placa de soplado.In addition to these advantages, it turns out that the amount of sand accumulated in the grooves is minimal and, consequently, the amount of sand that is lost or that needs to be controlled when changing the blow plate.
En una variante de realización, el cabezal de soplado puede adoptar la forma de una bandeja de pequeña altura que, junto con el cabezal de soplado determinan una cámara de reducido volumen, que permite utilizar la canc dad óptima de arena en cada soplado, a la vez que la for^a de bandeja de la placa de soplado facilita la retención de la arena en la maniobra de cambio de la citaαa placa de soplado.In a variant embodiment, the blow head can take the form of a small tray that, together with the blow head, determine a small volume chamber, which allows the use of the Optimum amount of sand in each blow, while the tray form of the blow plate facilitates the retention of the sand in the maneuver of changing the appointment of the blow plate.
En base a las características expuestas, se consiguen varios objetivos, pudiéndose destacar como más importantes los siguientes:Based on the exposed characteristics, several objectives are achieved, the most important being the following:
- Se evitan o minimizan los derrames de arena en las operaciones de cambio de las placas de soplado .- Sand spills are avoided or minimized in the operations of changing the blow plates.
Se facilita la operación de limpieza, con la consiguiente reducción del tiempo utilizado.The cleaning operation is facilitated, with the consequent reduction of the time used.
Se consigue una mejor compactación de la arena para obtener los machos correspondientes, ser dirigida aquella por canales hacia las boquillas de soplado.A better compaction of the sand is obtained to obtain the corresponding males, to be directed that one through channels towards the blow nozzles.
Se facilita el cambio de la placa de soplado, reduciendo el tiempo normalmente requerido para esta operación, como consecuencia de que, al no quedar prácticamente arena en la placa de soplado, y la que queda en la misma está perfectamente retenida, el manipulado de la placa puede realizarse más rápidamente.The exchange of the blowing plate is facilitated, reducing the time normally required for this operation, as a result of the fact that, when there is practically no sand left in the blow plate, and the one remaining therein is perfectly retained, the handling of Plate can be done more quickly.
Al acumularse muy poca arena en la placa de soplado, en cada soplado se emplea arena fresca .When very little sand accumulates on the blow plate, fresh sand is used for each blow.
Se optimiza el consumo de aire y se reduce con ello el aire residual, a la vez que se reduce también, consecuentemente, el tiempo de descarga del citado aire residual .The air consumption is optimized and the residual air is reduced, while reducing also, consequently, the discharge time of said residual air.
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 del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, 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, according to a preferred example of practical implementation thereof, a set of drawings is attached as an integral part of said description. In an illustrative and non-limiting manner, the following has been represented:
La figura 1. - Muestra una vista en sección vertical del cabezal de soplado realizado de acuerdo con el objeto de la invención.Figure 1. - Shows a vertical sectional view of the blow head made in accordance with the object of the invention.
La figura 2. - Muestra una vista en planta interior de la placa de soplado, dejando ver los canales que dirigen la arena hacia las correspondientes boquillas de soplado .Figure 2. - Shows an interior plan view of the blow plate, showing the channels that direct the sand towards the corresponding blow nozzles.
La figura 3. - Muestra una vista en perspectiva superior de la citada placa de soplado.Figure 3. - Shows a top perspective view of said blow plate.
La figura 4. - Muestra una vista en sección como la de la figura 1, en la versión en que el cabezal de soplado adopta la configuración de una bandeja.Figure 4. - It shows a sectional view like that of figure 1, in the version in which the blower head adopts the configuration of a tray.
La figura 5.- Muestra una vista en planta superior del cabezal representado en la figura anterior.Figure 5.- Shows a top plan view of the head shown in the previous figure.
REALIZACIÓN PREFERENTE DE LA INVENCIÓN A la vista de las comentadas figuras, puede observarse como el cabezal de soplado objeto de la invención incluye, como es convencional, un cartucho de soplado (1) , un cabezal de soplado propiamente dicho (2) y una placa de soplado (3) , de manera que la arena procedente de una tolva accede a través del cartucho (1) hacia el cabezal (2) y de éste hacia la placa de sopladoPREFERRED EMBODIMENT OF THE INVENTION In view of the aforementioned figures, it can be seen how the blow head object of the invention includes, as is conventional, a blow cartridge (1), a blow head itself (2) and a blow plate (3) , so that the sand coming from a hopper accesses through the cartridge (1) towards the head (2) and from this one towards the blowing plate
(3) , dotada de una pluralidad de boquillas (5) en comunicación con la correspondiente ca a de machos no representada .(3), provided with a plurality of nozzles (5) in communication with the corresponding male cavity not shown.
Tanto el cartucho (1) como la placa de soplado (3) están convenientemente fijadas al cabezal de soplado (2) por cualquier sistema apropiado.Both the cartridge (1) and the blow plate (3) are conveniently fixed to the blow head (2) by any appropriate system.
Pues bien, a partir de esas características, la novedad de la invención consiste en que el cabezal de soplado (2) presenta una configuración plana, como se ve claramente en la figura 1, de manera que el volumen de la cámara de soplado, queda determinada por el cuello (4) , prolongación axial y sin prácticamente solución de continuidad del cartucho (1) y por los canales (6), establecidos en la placa de soplado (3) , la cual es también plana y mayoritariamenté maciza, canales (6) realizados en la dirección apropiada para que los mismos comuniquen el cuello (4) del cabezal de soplado propiamente dicho (2) con las correspondientes boquillas de soplado (5) asociadas a la cara inferior de la placa (3) . De esta manera no sólo se reduce drásticamente la volumetría de la cámara de soplado (4-6) sino que además al verse la arena obligada a fluir a través de los canalesWell, from these characteristics, the novelty of the invention is that the blow head (2) has a flat configuration, as clearly seen in Figure 1, so that the volume of the blow chamber is left determined by the neck (4), axial extension and with virtually no continuity solution of the cartridge (1) and by the channels (6), established in the blow plate (3), which is also flat and mostly solid, channels ( 6) made in the appropriate direction so that they communicate the neck (4) of the blow head itself (2) with the corresponding blow nozzles (5) associated to the bottom face of the plate (3). In this way, not only is the volumetry of the blow chamber (4-6) reduced dramatically, but also when the sand is forced to flow through the channels
(6) de la placa de soplado, accede con mayor eficacia a las boquillas (5) , lo que favorece su acceso a la caja de machos, a la vez que utilizar en cada soplado la arena prácticamente necesaria y además que dicha arena sea siempre fresca, por cuanto prácticamente no queda arena acumulada en el cabezal de soplado una vez efectuada la descarga .(6) of the blower plate, access more effectively to the nozzles (5), which favors their access to the male box, while using the sand in each blow practically necessary and in addition that said sand is always fresh, since there is practically no sand accumulated in the blow head once the discharge is made.
Por consiguiente, en virtud de la nueva concepción del cabezal de soplado (2) , a la hora de llevar a cabo el cambio del mismo, las perdidas de arena serán mínimas, por cuanto la arena residual después de la última descarga queda retenida en los canales del citado cabezal.Therefore, by virtue of the new conception of the blow head (2), when carrying out the change of the same, the sand losses will be minimal, since the residual sand after the last discharge is retained in the channels of said head.
En la figura 3 , se observa la cara superior o interna de la placa de soplado (3), en la que se aprecia con claridad la zona rebajada o vaciados (6), a través de los cuales la arena accede a las boquillas de salida (5) , siendo evidente que esta realización es meramente ej enripiaría, que la morfología de la citada zona rebajada (6) será variable en función de la posición necesaria para las boquillas (5) , y que a su vez la posición de dichas boquillas (5) dependerá, en cada caso, del macho a fabricar y, consecuentemente, de la caja de machos y de las conexiones para las boquillas previstas en dicha caja de machos .In figure 3, the upper or inner face of the blower plate (3) is observed, in which the recessed or emptied area (6) is clearly seen, through which the sand accesses the outlet nozzles (5), it being evident that this embodiment is merely enripiary, that the morphology of said recessed area (6) will vary depending on the position necessary for the nozzles (5), and that in turn the position of said nozzles (5) will depend, in each case, on the male to be manufactured and, consequently, on the male box and on the connections for the nozzles provided in said male box.
En la variante de realización mostrada en las figuras 4 y 5, el cabezal de soplado (2 ' ) presenta una configuración tronco-piramidal, aplanada, o lo que es lo mismo una configuración trapecial según una vista en sección lateral del propio cabezal, de manera que esta configuración también ve reducida la capacidad o volumen de la cámara de soplado (4-4') del propio cabezal (2 ' ) , aunque no tan drásticamente con en el caso anterior, habiéndose previsto en esta versión un vaciado (6') en la placa de soplado (3) , en sustitución de los canales (6) , contando con un escalón (3 ' ) , todo lo cual configura una placa de soplado a modo de bandeja. In the variant embodiment shown in Figures 4 and 5, the blow head (2 ') has a trunk-pyramidal configuration, flattened, or what is the same a trapecial configuration according to a side sectional view of the head itself, of so that this configuration is also reduced the capacity or volume of the blow chamber (4-4 ') of the head itself (2'), although not so drastically with in the previous case, a dump (6 'being provided in this version ) on the blower plate (3), replacing the channels (6), with a step (3 '), all of which configures a tray blower plate.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2001235504A AU2001235504A1 (en) | 2000-02-15 | 2001-02-13 | Blow head for core blowing machines |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ESU200000350 | 2000-02-15 | ||
| ES200000350U ES1045359Y (en) | 2000-02-15 | 2000-02-15 | BLOWING HEAD FOR MALE BLOWING MACHINES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001060548A1 true WO2001060548A1 (en) | 2001-08-23 |
Family
ID=8492319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2001/000050 Ceased WO2001060548A1 (en) | 2000-02-15 | 2001-02-13 | Blow head for core blowing machines |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES1045359Y (en) |
| WO (1) | WO2001060548A1 (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1405398A (en) * | 1921-03-21 | 1922-02-07 | Robert B Campbell | Sand-hopper construction |
| US3007215A (en) * | 1959-04-13 | 1961-11-07 | Demmler Mfg Co | Core blowing apparatus |
| US3066363A (en) * | 1959-09-14 | 1962-12-04 | Willard B Jay | Core box for sand cores |
| US3187391A (en) * | 1962-11-19 | 1965-06-08 | Int Harvester Co | Blow plate for core blowers |
| DE2923271A1 (en) * | 1979-06-08 | 1980-12-11 | Arenco Bmd Maschfab | Foundry moulding machine using shooter head - which contains adjustable elastomer sleeve forming constriction inside head |
| ES2011637B3 (en) * | 1986-08-08 | 1990-02-01 | Joachim Laempe | ADJUSTMENT DEVICE FOR A MALE TRIGGER MACHINE |
| ES2074356T3 (en) * | 1991-08-30 | 1995-09-01 | Hottinger Adolf Masch | DEVICE AND PROCEDURE FOR FILLING PULL HEADS WITH MOLDING MATERIALS. |
| JPH07256394A (en) * | 1994-03-18 | 1995-10-09 | Sintokogio Ltd | Blow-in mold sand injection equipment for molding equipment |
| ES2102237T3 (en) * | 1993-08-04 | 1997-07-16 | Hottinger Adolf Masch | SHOOTING HEAD FOR A MALE TRIGGER. |
-
2000
- 2000-02-15 ES ES200000350U patent/ES1045359Y/en not_active Expired - Fee Related
-
2001
- 2001-02-13 WO PCT/ES2001/000050 patent/WO2001060548A1/en not_active Ceased
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1405398A (en) * | 1921-03-21 | 1922-02-07 | Robert B Campbell | Sand-hopper construction |
| US3007215A (en) * | 1959-04-13 | 1961-11-07 | Demmler Mfg Co | Core blowing apparatus |
| US3066363A (en) * | 1959-09-14 | 1962-12-04 | Willard B Jay | Core box for sand cores |
| US3187391A (en) * | 1962-11-19 | 1965-06-08 | Int Harvester Co | Blow plate for core blowers |
| DE2923271A1 (en) * | 1979-06-08 | 1980-12-11 | Arenco Bmd Maschfab | Foundry moulding machine using shooter head - which contains adjustable elastomer sleeve forming constriction inside head |
| ES2011637B3 (en) * | 1986-08-08 | 1990-02-01 | Joachim Laempe | ADJUSTMENT DEVICE FOR A MALE TRIGGER MACHINE |
| ES2074356T3 (en) * | 1991-08-30 | 1995-09-01 | Hottinger Adolf Masch | DEVICE AND PROCEDURE FOR FILLING PULL HEADS WITH MOLDING MATERIALS. |
| ES2102237T3 (en) * | 1993-08-04 | 1997-07-16 | Hottinger Adolf Masch | SHOOTING HEAD FOR A MALE TRIGGER. |
| JPH07256394A (en) * | 1994-03-18 | 1995-10-09 | Sintokogio Ltd | Blow-in mold sand injection equipment for molding equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| ES1045359Y (en) | 2001-02-16 |
| ES1045359U (en) | 2000-08-16 |
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