Rotary glazing machine having an elastically deformable matrix cylinder
AssigneeSyfal S.r.l.
InventorFranco Stefani
Life of this patent
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Abstract
The invention comprises a mobile rest plane for tiles on which operates a matrix cylinder provided with an elastically deformable peripheral part having a smooth external skin made of an elastomer material, on which a matrix, in the form of microscopic cavities, is cut. A doctor, arranged in order to be in contact with the skin, has the task of scraping away excess glaze and any impurities deposited on the skin as well as the task of remixing the glaze such as at least partially to replenish the cavities with freshened glaze. The matrix cylinder is positioned on the rest plane such as to roll thereon without dragging on a tile upper surface as the tile transits on the rest plane.
Claims10
A machine for decoration and glazing ceramic tiles, comprising:
- a mobile rest plane for ceramic tiles on which the tiles are conveyed in a preestablished direction;
- a rotary decorating and glazing apparatus positioned above the rest plane and comprising:
- a matrix cylinder rotatable about an axis of the cylinder and having at least one elastically deformable portion including at a periphery thereof a smooth cylindrical external surface skin made of an elastomer material on which a matrix is cut, said matrix being composed of a plurality of cavities;
- at least a first doctor operating contactingly with the skin of the matrix cylinder such as to scrape thereagainst and remove therefrom an excess of glaze deposited thereon and adhering thereto;
- means for rotating the matrix cylinder in a rotation sense about the axis thereof;
- and
- means for adjusting the matrix cylinder with respect to the rest plane such that the skin rotates without dragging against, and with a preestablished pressure upon, a surface of a tile transiting on the rest plane.
A machine for decoration and glazing ceramic tiles, comprising:
- a mobile rest plane for ceramic tiles on which the tiles are conveyed in a preestablished direction;
- a rotary decorating and glazing apparatus positioned above the rest plane and comprising:
- a matrix cylinder rotatable about an axis of the cylinder and having at least one elastically deformable portion including at a periphery thereof a smooth cylindrical external surface skin made of an elastomer material on which a matrix is cut, said matrix being composed of a plurality of cavities;
- at least a first doctor operating contactingly with the skin of the matrix cylinder such as to scrape thereagainst and remove therefrom an excess of glaze deposited thereon and adhering thereto;
- means for rotating the matrix cylinder in a rotation sense about the axis thereof;
- and
- means for adjusting the matrix cylinder with respect to the rest plane such that the skin rotates without dragging against, and with a preestablished pressure upon, a surface of a tile transiting on the rest plane;
- wherein the elastically deformable portion of the matrix cylinder is anchored on a cylindrical center which includes, solidly constrained to both ends thereof, two crowns having a same external diameter as the skin, the crowns and the skin being coaxial;
- each of the crowns including at least one external annular channel.
A rotary decoration and glazing process for ceramic tiles, comprising:
- arranging glaze on a matrix composed of a plurality of cavities cut into a portion of a cylindrical and elastically-deformable smooth skin;
- removing by use of at least a first doctor excess glaze deposited on the matrix cut into the skin;
- continually remixing the glaze and at least partially replenishing the glaze lodged in the cavities with said first doctor;
- transferring the glaze contained in the cavities by direct contact, the contact including rolling without dragging, of the matrix against a transiting tile upper surface.
Dependencies are inferred from the claim text.