A process for the quality monitoring from powder-shaped pressing material and a rotary press for carrying out the method

摘要

A process for the quality monitoring from powder-shaped pressing material for a rotary press, in which the pressing material is of a reservoir, via a preferably vertical supply duct is supplied to a filling device, the continuously dies of a rotor with the pressing material is filled, characterized in that the feed channel (24) a microwave resonator with an evaluation unit (46) is associated with the moisture and / or the density and / or the size of the granulate of the molding material and at least one measured value of the microwave resonator for the change in a correcting variable of the rotary press is used, the rotational speed of the rotor and / or the rotational speed of the filling device and / or the metering of the molding material and / or the pressing force of compaction rams in the rotor by means of adjustment of pressure rollers is changed, when the measured variable from a predetermined second value, wherein the measurement with a cavity resonator (58) outside of a housing (40) for the rotary press in a bypass passage (56) parallel to the feed channel (24) is carried out.