Method for feeding a pressing apparatus
AssigneeS.I.T.I. Societa Impianti Termoelettrici Industriali S.p.A.
InventorRenato Bossetti
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Abstract
The present invention relates to a method for feeding a granular or powderlike material to a pressing apparatus for the dry pressing of the material. The device comprises containers for the materials and rollers arranged at openings of the containers. Each roller has a cavity which is suitable to be filled by the material and to be freed of the material following a rotation of the rollers so as to pour the material into a mold. In the method, the rotation of the rollers is produced simultaneously with a movement of the rollers in a direction which lies at right angles to its axis. The invention allows to obtain particular color effects, such as colorings, color shades, basic decorations, complex decorations, natural stone-like effects, et cetera, on the resulting ceramic products, particularly tiles.
Claims5
A method for the dry pressing of at least two distinct granular or powderlike materials to form a manufactured product having a thickness dimension, comprising loading a mold by rotating at least two rollers each one of which contains one of said materials in a cavity formed in the respective one of said rollers, a first of said rollers loading certain parts of said mold, a second of said rollers loading other parts of said mold, that have been left free by said first roller, so as to generate a decorative pattern extending through the thickness dimension of the manufactured product.
A method for the dry pressing of at least two distinct granular or powderlike materials to form a manufactured product having a thickness dimension, comprising:
- loading a first one of said materials into a cavity provided in a first roller;
- moving the loaded first roller relative to an empty mold;
- during the moving of said loaded first roller relative to said mold, rotating the loaded first roller above said mold;
- by virtue of the moving and rotating of the loaded first roller, depositing said first one of said materials in said mold in a first predetermined location therein, while leaving a portion of said mold empty of said first one of said materials;
- loading a second one of said materials into a cavity provided in a second roller;
- moving the loaded second roller relative to said mold partially filled with said first one of said materials;
- during the moving of said loaded second roller relative to said mold, rotating the loaded second roller above said mold;
- by virtue of the moving and rotating of the loaded second roller, depositing said second one of said materials in said mold in a second predetermined location therein different from said first location, thereby enabling generation of a decorative pattern extending through the thickness dimension of the manufactured product.
A method for feeding at least two different granular or powderlike materials to a pressing apparatus for the dry pressing of said materials, comprising:
- filling cavities in at least two rollers with respective granular or powderlike materials from respective containers for said materials;
- after the filling of said cavities, rotating the respective rollers to load the granular or powderlike materials in respective predetermined locations in a mold so that said materials extend from a lower side of said mold to an upper side thereof at the respective predetermined locations,
- the rotating of said rollers including operating at least one servomotor connected to said rollers and providing feedback to a controller from a plurality of encoders operatively linked to said rollers.
Dependencies are inferred from the claim text.