Patent ID: 11938652
Assignee: DARIO TONCELLI
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 11:
12. A method for the production of slabs of composite stone material from a mix containing granules of stone or ceramic or glass material and a binder, characterized in that it comprises the following steps:
(a) dispensing and distribution of a layer of mix with a predetermined thickness on a temporary support or mould;
(b) compaction of said mix arranged on said temporary support or mould by means of a vacuum vibro-compression action;
(c) hardening of the mix to obtain the slabs;
wherein the method comprises, downstream of said step (a) for dispensing and distributing the mix and upstream of said compaction step (b), a step (d) for pre-compacting and levelling the mix on the temporary support so as to reduce the thickness of said mix, levelling it before said compaction step; and
wherein said step (d) is performed by pre-compaction and levelling means comprising at least one roller having a horizontal axis of rotation perpendicular to said feeding direction and lying in a plane parallel to said feeding direction, said at least one roller being positioned at a variable working height with respect to a horizontal supporting surface of the temporary support.