Press die and method for producing a roof tile
AssigneeMonier Roofing GmbH
InventorFrank Winter
Life of this patent
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Abstract
A press die for producing a clay roof tile, including a first die half and a second die half, which can move between a pressing position, in which they define a receiving space that represents the form of the finished roof tile, and a filling position, in which they are mutually spaced and the receiving space can be filled with a plastically deformable clay material. At least one of the first and the second die half has at least one depression which represents a projecting part of the finished roof tile; a first compression element is provided at the depression, and movable between an initial position, in which it is retracted in relation to the form of the finished roof tile, and a compacting position, in which some sections of the first compression element represent the surface of the finished roof tile.
Claims21
A press mold for producing a roof tile from clay, having a first mold half and a second mold half, wherein the mold halves are movable relative to one another between a pressing position and a filling position;
- in the pressing position the mold halves substantially delimit a receiving space that models the shape of the finished roof tile, and respective opposing surfaces of the first mold half and of the second mold half model in each case a corresponding surface of the roof tile, and
- in the filling position, the mold halves are spaced apart from one another so that a plastically deformable clay material can be filled into at least one of the first and the second mold half,
- wherein at least one of the first mold half and the second mold half has at least one recess that models a protrusion on the finished roof tile, and
- adjacent the recess, a first pressure element is provided, which is configured to be movable between a starting position, in which the first pressure element is set back with regard to the shape of the finished roof tile, and a compacting position, in which the first pressure element partially models the surface of the roof tile,
- wherein, on opposite faces of the recess, in each case at least one first pressure element is provided, wherein the opposite first pressure elements are coupled together hydraulically or via a controller.
A method for producing a roof tile from clay, using a press mold that has a first mold half and a second mold half, wherein the mold halves are movable relative to one another between a pressing position and a filling position;
- in the pressing position the mold halves substantially delimit a receiving space that models the shape of the finished roof tile, and respective opposing surfaces of the first mold half and of the second mold half model in each case a corresponding surface of the roof tile, and
- in the filling position, the mold halves are spaced apart from one another so that a plastically deformable clay material can be filled into at least one of the first and the second mold half,
- wherein at least one of the first mold half and the second mold half has at least one recess that models a protrusion on the finished roof tile, and
- adjacent the recess, a first pressure element is provided, which is configured to be movable between a starting position, in which the first pressure element is set back with regard to the shape of the finished roof tile, and a compacting position, in which the first pressure element partially models the surface of the roof tile, the method comprising the steps of:
- providing the press mold, wherein the mold halves are located in the filling position and the at least one first pressure element is located in the starting position,
- filling a predried granular clay material into the receiving space,
- moving the mold halves into the pressing position, wherein the clay material is compacted,
- moving the at least one pressure element into the compacting position, wherein the clay material is compacted in the region of the first pressure element,
- wherein, following completion of the pressing operation, the first pressure element is moved into the starting position, then the mold halves are moved into the filling position, and the roof tile is removed from the press mold, and
- wherein a guide for at least one of the first and the second mold half is provided, wherein the guide, together with the mold halves, fully delimits the receiving space in the filling position and in the pressing position, wherein, before the mold halves are moved laterally into the filling position, the guide is moved laterally into a demolding position.
Dependencies are inferred from the claim text.