Metodo per il controllo del funzionamento di una macchina comprimitrice

Control method for controlling the operating conditions of a rotary press machine (1) for forming tablets (100), wherein the rotary press machine (1) comprises a rotating compression turret (2) which includes a die table (3) provided along a circumferential portion thereof with a plurality of dies (4), a plurality of lower punches (6) and a corresponding plurality of upper punches (5) associated in pairs with respective dies (4), said lower punches (6) and said upper punches (5) respectively having a substantially cylindrical body equipped with an abutment end on which a lower compression roller (12) and an upper compression roller (11) respectively abut, a feeding station (7), a control system (20) to control the operating pressure of said lower and upper compression rollers (12, 11), in which during a detection phase the feeding of powder (50) into the dies (4) is inhibited so as to have at least one empty die (4a), said lower (6) and/or upper (5) punches are moved towards said at least one empty die (4a) by means of respective lower and/or upper compressing means, and a resisting pressure value is measured, by means of detection means (14), as the value of pressure exerted by the respective lower and/or upper compression means on the corresponding lower and/or upper punches (6, 5) moved inside said at least one empty die (4a), and an evaluation phase in which a value of said resisting pressure is processed by said control system (20) to generate a signal relating to a punch operating state.