ES2253992A1 - Water drainage system for punch press for use in floor tile manufacture, has porous plastic filter lodged in pressure die and pressurizing watery mass filled in mold - Google Patents
Water drainage system for punch press for use in floor tile manufacture, has porous plastic filter lodged in pressure die and pressurizing watery mass filled in moldInfo
- Publication number
- ES2253992A1 ES2253992A1 ES200401737A ES200401737A ES2253992A1 ES 2253992 A1 ES2253992 A1 ES 2253992A1 ES 200401737 A ES200401737 A ES 200401737A ES 200401737 A ES200401737 A ES 200401737A ES 2253992 A1 ES2253992 A1 ES 2253992A1
- Authority
- ES
- Spain
- Prior art keywords
- water
- pressing
- punch
- manufacture
- extraction system
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 238000003825 pressing Methods 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000010348 incorporation Methods 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000003809 water extraction Methods 0.000 claims 9
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
- B28B3/06—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould with two or more ram and mould sets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
-
- 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
- B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
- B28B7/46—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for humidifying or dehumidifying
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
Description
Punzón de prensada con sistema de extracción de agua para la fabricación de baldosas.Pressing punch with extraction system water for the manufacture of tiles.
La presente invención se refiere a un punzón de prensada empleado para la fabricación de baldosas que está dotado de un sistema drenaje que facilita la extracción, a través del punzón, del agua que forma parte de la masa utilizada para fabricar baldosas.The present invention relates to a punch of Press used for the manufacture of tiles that is equipped with a drainage system that facilitates the extraction, through the punch, of the water that is part of the mass used to manufacture tiles.
Es objeto de la invención que el punzón de prensada integre un filtro inferior en el que se encuentre definida la leyenda y/o dibujo a plasmar sobre la baldosa y que éste se conciba en un material poroso que permita transpirar únicamente el agua limpia que contiene la masa que se desea prensar, así como que disponga en combinación con este filtro un sistema de canalizaciones internas que faciliten la evacuación del agua absorbida hacia el exterior.It is an object of the invention that the punch of Pressed integrate a lower filter in which it is defined the legend and / or drawing to capture on the tile and that it conceived in a porous material that allows only the clean water that contains the mass to be pressed, as well as arrange a pipe system in combination with this filter internal that facilitate the evacuation of the absorbed water towards the Exterior.
La Patente de Invención ES 2 082 699 perteneciente al mismo solicitante de la presente invención se refiere a un procedimiento de fabricación de placas de terrazo y a la máquina para la puesta en práctica del mismo. El procedimiento se basa fundamentalmente en eliminar el exceso de agua inicialmente existente en la masa que ha de constituir la baldosa mediante drenaje.Invention Patent ES 2 082 699 belonging to the same applicant of the present invention will refers to a method of manufacturing terrazzo plates and to the machine for the implementation of it. The procedure is based primarily on removing excess water initially existing in the mass to be the tile by sewer system.
Este procedimiento constituye una solución alternativa al método habitualmente empleado para eliminar el agua sobrante que interviene en la fabricación de este tipo de baldosas.This procedure constitutes a solution. alternative to the method commonly used to remove water surplus involved in the manufacture of this type of tiles.
Tradicionalmente en la elaboración de placas de terrazo participa un componente húmedo estructurado fundamentalmente a base de áridos, cemento y agua y un componente semiseco consistente en la denominada capa de revés, opuesta a la cara vista de la baldosa, que constituye un medio absorbente para eliminar la humedad de forma rápida. La efectividad de esta capa de revés está relacionada con la necesidad de que disponga de un espesor considerable, lo que repercute negativamente en su peso y por tanto en las condiciones de manejo y en el coste.Traditionally in the elaboration of plates of Terrazzo participates a fundamentally structured wet component based on aggregates, cement and water and a semi-dry component consisting of the so-called reverse layer, opposite the face of the tile, which constitutes an absorbent means to eliminate the moisture quickly. The effectiveness of this reverse layer is related to the need for a thickness considerable, which negatively impacts your weight and therefore in driving conditions and cost.
En la Patente de Invención ES 2 082 699 se propone como solución alternativa para la eliminación de agua, la incorporación de un sistema de drenaje que permite eliminar la capa de absorción con la consecuente reducción de peso, abaratamiento de costos, mejora de la imagen del producto e incluso aumento de la rigidez estructural.In the Invention Patent ES 2 082 699, proposes as an alternative solution for water removal, the incorporation of a drainage system that eliminates the layer of absorption with the consequent reduction of weight, lowering of costs, improvement of the image of the product and even increase of the structural rigidity
La máquina descrita en dicha patente propone incorporar en la base de cada molde una pluralidad de acanaladuras para recogida y evacuación de agua hacia un colector, estableciendo sobre dicha base una placa metálica perforada sobre la que se encuentra un papel filtrante en el que se deposita el caldo o masa que ha de constituir la baldosa. El agua abandona en primera instancia el molde mediante drenaje por gravedad y en una segunda fase se establece el cierre hermético de la cámara definida en el seno del molde y se aplica aire a presión que fuerza la salida del agua y favorece una mayor compactación de la baldosa.The machine described in said patent proposes incorporate a plurality of grooves at the base of each mold for collecting and evacuating water to a collector, establishing on said base a perforated metal plate on which find a filter paper in which the broth or dough is deposited which must constitute the tile. Water leaves first instance the mold by gravity drainage and in a second phase the hermetic seal of the chamber defined in the inside the mold and pressurized air is applied that forces the outlet of the water and favors a greater compaction of the tile.
El punzón de prensada que constituye el objeto de esta invención mantiene la filosofía de la patente descrita en el apartado anterior en lo que se refiere a la necesidad de evacuar agua de la masa empleada para la fabricación de las baldosas en la fase de prensado, evitando así el empleo de una capa de absorción, pero a diferencia de ésta contempla la salida del agua a través del punzón de prensada en lugar de por la base del molde.The press punch that is the object of This invention maintains the philosophy of the patent described in the previous section regarding the need to evacuate water from the dough used to manufacture the tiles in the pressing phase, thus avoiding the use of an absorption layer, but unlike this one it contemplates the exit of the water through the Pressing punch instead of the base of the mold.
En esta invención se propone que el punzón de prensada integre un sistema de filtrado y canalización que facilite la evacuación del agua durante su carrera de descenso al presionar sobre la masa que conformará la baldosa.In this invention it is proposed that the punch of Pressed integrate a filtering and channeling system that facilitates the evacuation of water during its descent race when pressing on the mass that will make up the tile.
En correspondencia y enfrentado al punzón de prensada se encuentra a un nivel inferior un molde base sobre el que se introduce el hormigón, agua y cualquier otro componente que se considere para la fabricación de la baldosa. La baldosa quedará definida al presionar el punzón de prensada sobre la masa, mostrando el punzón en su cara de impacto las leyendas o formas que se pretenden reproducir en la baldosa.Correspondingly and facing the punch of Pressed is at a lower level a base mold on which concrete, water and any other component that is introduced Consider for the manufacture of the tile. The tile will be defined by pressing the press punch on the dough, showing the punch in your face impact the legends or shapes that They intend to reproduce on the tile.
Se contempla la posibilidad de que en combinación con el punzón con sus grabados, el molde base pueda disponer de una superficie lisa de goma o bien de una superficie en relieve con las leyendas o grabados correspondientes.The possibility that in combination with the punch with its engravings, the base mold can have a smooth rubber surface or an embossed surface with the corresponding legends or engravings.
La cara de impacto se encuentra definida en un filtro conformado fundamentalmente en plástico poroso que permite únicamente el paso del agua limpia que contiene el hormigón que se desea prensar.The impact face is defined in a filter formed mainly in porous plastic that allows only the passage of clean water containing the concrete that is You want to press.
Este filtro se encuentra dispuesto sobre una chapa de acero perforada formando un conjunto que se aloja en un troquel de prensada que está dotado en su cara interna de una retícula de protuberancias, de forma normalmente troncopiramidal. Entre estas protuberancias se definen unos canales que dirigen el agua absorbida por el filtro hacia unos canales de comunicación definidos en las proximidades de la periferia del troquel que conducen el agua hacia unos taladros verticales que se comunican con orificios correspondientes practicados en un soporte de drenaje que acopla superiormente sobre el troquel de prensada.This filter is arranged on a perforated steel sheet forming a set that is housed in a press die which is provided on its inner face with a protrusion grid, usually truncated pyramid shape. Between these protuberances some channels are defined that direct the water absorbed by the filter towards communication channels defined in the vicinity of the periphery of the die that they lead the water towards vertical drills that communicate with corresponding holes made in a drain support that fit superiorly on the press die.
El soporte de drenaje cuenta en su cara superior con una acanaladura abierta superiormente que comunica todos estos orificios para facilitar el direccionamiento del agua hacia unas bocas de salida transversales que desembocan en las caras laterales del soporte a través de las que se extrae el agua al exterior, conectándose en estos puntos unos conductos, normalmente flexibles, que evacuan el agua hacia un colector de vaciado.The drain support counts on its upper face with a superiorly open groove that communicates all these holes to facilitate the direction of water towards transverse outlet mouths leading to the side faces of the support through which water is extracted to the outside, connecting ducts, normally flexible, at these points, that evacuate the water to a drain manifold.
Se contempla que exteriormente al soporte de drenaje y en los citados conductos se intercalen unos eyectores de vacío que generan una depresión de aire que facilita la absorción del agua extraída por el punzón al objeto de conseguir un perfecto secado de la baldosa eliminando asimismo el agua que pudiera quedar acumulada por encima de la baldosa.It is contemplated that externally to the support of drainage and in said ducts are inserted ejectors of vacuum that generate an air depression that facilitates absorption of the water extracted by the punch in order to achieve a perfect drying of the tile also eliminating the water that could remain accumulated above the tile.
Este soporte de drenaje se puede conformar en duraluminio, en el caso de que el sistema de sujeción del punzón al cabezal móvil de la prensa se establezca por medio de resortes o tornillos, o bien puede conformarse en un bloque de acero para el caso de que la sujeción del punzón al cabezal se establezca por atracción magnética.This drain support can be shaped into duralumin, in the event that the punch clamping system at moving head of the press is established by means of springs or screws, or it can be formed into a steel block for the in case the clamping of the punch to the head is established by magnetic attraction
El soporte de drenaje se encuentra cubierto superiormente por medio de una tapa de drenaje, que coincide dimensionalmente con éste, y se encuentra convenientemente atornillada de modo que cubre el soporte cerrando superiormente su acanaladura abierta.The drain support is covered superiorly by means of a drain cover, which coincides dimensionally with this one, and is conveniently screwed so that it covers the support by closing its upper open groove.
Así pues al aplicar presión por medio del punzón sobre la masa albergada en el molde, se consigue extraer el agua de la misma que es transpirada por el filtro ubicado en el troquel de prensada y se dirige por las conducciones del troquel hacia el soporte de drenaje desde el que se evacua hacia el exterior.So when applying pressure through the punch on the dough housed in the mold, it is possible to extract the water from the same that is transpired by the filter located in the die of pressed and directed by the die conduits to the drain support from which it is evacuated to the outside.
Se ha previsto asimismo que el troquel de prensada disponga practicados en sus lados unos orificios horizontales de escaso diámetro que favorezcan la recogida del agua que se acumula en el perímetro del molde base cuando se forma la baldosa durante la prensada. Estos orificios dirigen el agua hacia el canal periférico interno del troquel, prosiguiendo a continuación el mismo recorrido que el agua absorbida por el filtro hacia el soporte de drenaje saliendo hacia el exterior a través de las bocas de salida transversales.It is also planned that the die of Pressed holes in its sides small diameter horizontals that favor water collection that accumulates in the perimeter of the base mold when the tile during pressing. These holes direct the water towards the internal peripheral channel of the die, continuing below the same path as the water absorbed by the filter to the drain support coming outwards through the mouths of transverse output.
Al objeto de favorecer el direccionamiento del agua que se acumula en el perímetro del molde base hacia dichos orificios, se ha previsto que en los lados en los que se encuentran practicados los orificios se dispongan unas hendiduras verticales que se prolongan desde los orificios hasta su base.In order to favor the addressing of the water that accumulates in the perimeter of the base mold towards said holes, it is planned that on the sides where they are after the holes are arranged vertical slits that extend from the holes to its base.
Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características de la invención, de acuerdo con un ejemplo preferente de realización práctica de la misma, 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 performing and in order to help a better understanding of the characteristics of the invention, according to an example preferred practical implementation of it, is accompanied as integral part of that description, a set of drawings where with an illustrative and non-limiting nature, what has been represented next:
Figura 1.- Muestra una vista en perspectiva del punzón de prensada.Figure 1.- Shows a perspective view of the press punch.
Figura 2.- Muestra una vista del punzón de prensada acoplado al cabezal de la prensa enfrentado al molde en el que vierte la masa con la que se conforma la baldosa.Figure 2.- Shows a view of the punch of press coupled to the press head facing the mold in the that pours the mass with which the tile conforms.
Figura 3.- Muestra una vista en perspectiva inferior del filtro.Figure 3.- Shows a perspective view bottom of the filter.
Figura 4.- Muestra una vista en perspectiva superior del filtro en la que se observa la chapa de acero perforada sobre su cara superior.Figure 4.- Shows a perspective view upper of the filter in which the perforated steel sheet is observed on his upper face.
Figura 5.- Muestra una vista inferior del troquel de prensada.Figure 5.- Shows a bottom view of the die Pressing.
Figura 6.- Muestra una vista superior del soporte de drenaje.Figure 6.- Shows a top view of the support drainage
El punzón de prensada con sistema de extracción de agua para la fabricación de baldosas que constituye el objeto de esta invención es de aplicación para su adaptación al cabezal móvil (1) de una prensa con objeto de efectuar la operación de prensado sobre la masa conformada por agua, hormigón y otros, introducida en un molde (2) para obtención de la baldosa.The press punch with extraction system of water for the manufacture of tiles that is the object of This invention is applicable for adaptation to the mobile head (1) of a press in order to carry out the pressing operation on the mass formed by water, concrete and others, introduced in a mold (2) for obtaining the tile.
El punzón de prensada incorpora fundamentalmente un filtro (3) de plástico poroso en cuya cara inferior se encuentran definidas las formas a reproducir en la baldosa, el cual incide a presión sobre la masa transpirando el agua en sentido opuesto a la carrera de prensada, así como incorpora unas conducciones conformadas por canales (7, 13, 14) y taladros (10, 12) que descargan el agua absorbida por el filtro (3) hacia el exterior.The press punch essentially incorporates a filter (3) of porous plastic on the underside of which are defined the ways to reproduce in the tile, which affects pressure on the mass by perspiring the water in the opposite direction to the Pressing career, as well as incorporating some conduits made up of channels (7, 13, 14) and holes (10, 12) that discharge the water absorbed by the filter (3) outwards.
El filtro (3) está fijo por su cara superior sobre una chapa de acero perforada (4) y se encuentra alojado en un amplio receptáculo (5) de un troquel de prensada (6) en el cual se encuentran unos primeros canales (7), paralela y transversalmente definidos entre unas protuberancias (8), que dirigen el agua transpirada por el filtro (3) hacia un primer canal de comunicación (9) desde el que parten unos primeros taladros (10) verticales que conducen el agua hacia un soporte de drenaje (11) acoplado superiormente.The filter (3) is fixed by its upper face on a perforated steel sheet (4) and is housed in a large receptacle (5) of a press die (6) in which find first channels (7), parallel and transversely defined between protuberances (8), which direct the water transpired by the filter (3) to a first communication channel (9) from which start some first vertical holes (10) that conduct the water to a drain support (11) coupled superiorly.
Los primeros canales (7) adoptan preferentemente forma triangular y están definidos entre protuberancias (8) de forma troncopiramidal.The first channels (7) preferably adopt triangular shape and are defined between protuberances (8) so truncated pyramid.
El soporte de drenaje (11) consta de unos segundos taladros (12) que se encuentran ubicados en correspondencia con los primeros taladros (10) para paso del agua procedente del troquel de prensada (6) que es conducida a un segundo canal de comunicación (13) definido en el soporte de drenaje (11) en el que se encuentran practicados transversalmente unos canales de salida (14) que dirigen el agua hacia el exterior del punzón de prensada.The drain support (11) consists of some second holes (12) that are located in correspondence with the first holes (10) for the passage of water from the press die (6) which is led to a second channel of communication (13) defined in the drain support (11) in which output channels are practiced transversely (14) that direct the water out of the punch pressed.
Por otra parte se ha previsto que el troquel de prensada (6) disponga en sus lados unos orificios horizontales (21) de escaso diámetro a través de los que se introduce el agua que se acumula en el perímetro del molde base (2) cuando se forma la baldosa durante la prensada, dirigiéndose el agua hacia el primer canal de comunicación (9). Para favorecer el direccionamiento del agua hacia dichos orificios horizontales (21) se contempla la incorporación en los lados del troquel de prensada (6) unas hendiduras verticales (22) que se prolongan desde dichos orificios horizontales (21) hasta la base de los lados.On the other hand, the die of Pressed (6) have horizontal holes on its sides (21) of small diameter through which the water that is introduced is introduced accumulates in the perimeter of the base mold (2) when the tile during the pressing, the water is directed towards the first communication channel (9). To favor the addressing of water to said horizontal holes (21) the incorporation on the sides of the pressing die (6) vertical grooves (22) extending from said holes horizontal (21) to the base of the sides.
Superiormente al soporte de drenaje (11) el punzón de prensada se encuentra vinculado a una tapa de drenaje (15) que cubre el canal de comunicación (13).In addition to the drain support (11), the Press punch is linked to a drain cap (15) covering the communication channel (13).
Se ha previsto que el soporte de drenaje (11) disponga de unos vaciados (16) en sus caras laterales para facilitar la incorporación de unos tornillos inferiores de fijación (17) que vinculan el soporte de drenaje (11) al troquel de prensada (6), así como permiten la inserción de unos tornillos superiores que atraviesan unos orificios (18) definidos en la tapa de drenaje (15) para vinculación del punzón al cabezal móvil (1) de la prensa.It is planned that the drain support (11) have some recesses (16) on their side faces to facilitate the incorporation of lower fixing screws (17) that they link the drain support (11) to the pressing die (6), as well as they allow the insertion of upper screws that they pass through holes (18) defined in the drain cover (15) for linking the punch to the moving head (1) of the press.
El soporte de drenaje (11) dispone asimismo de unas perforaciones internas (19) para el paso de tornillos que atornillan en taladros roscados (20) definidos en la tapa de drenaje (15) estableciendo la fijación entre el soporte de drenaje (11) y la tapa de drenaje (15).The drain support (11) also has internal perforations (19) for the passage of screws that screw in threaded holes (20) defined in the drain cover (15) establishing the fixing between the drain support (11) and the drain cover (15).
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200401737A ES2253992B1 (en) | 2004-07-15 | 2004-07-15 | PRESSED PUNCH WITH WATER EXTRACTION SYSTEM FOR THE MANUFACTURE OF TILES. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200401737A ES2253992B1 (en) | 2004-07-15 | 2004-07-15 | PRESSED PUNCH WITH WATER EXTRACTION SYSTEM FOR THE MANUFACTURE OF TILES. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2253992A1 true ES2253992A1 (en) | 2006-06-01 |
ES2253992B1 ES2253992B1 (en) | 2007-10-01 |
Family
ID=36578874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES200401737A Expired - Fee Related ES2253992B1 (en) | 2004-07-15 | 2004-07-15 | PRESSED PUNCH WITH WATER EXTRACTION SYSTEM FOR THE MANUFACTURE OF TILES. |
Country Status (1)
Country | Link |
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ES (1) | ES2253992B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014023946A1 (en) * | 2012-08-09 | 2014-02-13 | Eco Filters Limited | Carrier assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022109855A1 (en) * | 2022-04-25 | 2023-10-26 | Kobra Formen Gmbh | Device for producing concrete blocks and method for producing concrete blocks |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139722A (en) * | 1987-12-24 | 1992-08-18 | P. G. Lawton (Industrial Svcs.) Limited | Method of forming concrete structures |
GB2365368A (en) * | 2000-08-02 | 2002-02-20 | Eco Filters Ltd | Filter assembly |
-
2004
- 2004-07-15 ES ES200401737A patent/ES2253992B1/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139722A (en) * | 1987-12-24 | 1992-08-18 | P. G. Lawton (Industrial Svcs.) Limited | Method of forming concrete structures |
GB2365368A (en) * | 2000-08-02 | 2002-02-20 | Eco Filters Ltd | Filter assembly |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014023946A1 (en) * | 2012-08-09 | 2014-02-13 | Eco Filters Limited | Carrier assembly |
Also Published As
Publication number | Publication date |
---|---|
ES2253992B1 (en) | 2007-10-01 |
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