US 11,938,652 B2
Plant and method for the production of slabs made of composite stone material from a mix
Dario Toncelli, Bassano del Grappa (IT)
Assigned to Dario Toncelli, Bassano del Grappa (IT)
Appl. No. 17/619,386
Filed by Dario Toncelli, Bassano del Grappa (IT)
PCT Filed Jun. 23, 2020, PCT No. PCT/IB2020/055900
§ 371(c)(1), (2) Date Dec. 15, 2021,
PCT Pub. No. WO2020/261103, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 102019000010290 (IT), filed on Jun. 27, 2019.
Prior Publication US 2022/0297343 A1, Sep. 22, 2022
Int. Cl. B28B 3/02 (2006.01); B28B 3/12 (2006.01); B28B 15/00 (2006.01)
CPC B28B 3/022 (2013.01) [B28B 3/123 (2013.01); B28B 15/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A plant for the production of slabs made of composite stone material from a mix containing granules of stone or ceramic or glass material and a binder, comprising:
at least one temporary support or mould;
a distributor for the mix designed to distribute a layer of mix on said at least one temporary support or mould;
a station for performing compaction by means of vacuum vibro-compression of the mix arranged on the at least one temporary support or mould;
a station for hardening the mix in order to form the finished slabs;
wherein the plant comprises a device positioned downstream of said distributor and upstream of said compaction station and comprising means which act on the top surface of the mix for pre-compaction and levelling of the mix arranged on the at least one temporary support or mould; and
wherein said pre-compaction and levelling means comprise 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.