Method for test pressing pellets in a rotary press

Abstract

A method for test pressing pellets in a rotary press, wherein the method includes the following steps: a punch pair of an upper and lower pressing punch assigned to a receptacle of the die plate is brought into a dosing position in which the upper pressing punch is moved upward out of the receptacle and the lower pressing punch is located partially in the receptacle, such that the lower pressing punch presets a maximum filling height of material to be compressed in the receptacle, material to be compressed is filled into the receptacles, the pressing units of the pressing apparatus are moved toward one another such that an expected web height of a pellet to be manufactured in the test pressing is reached before the punch pair exceeds the place of the smallest distance between the pressing units during a rotation of the rotor, the rotor is put into rotary motion such that the punch pair for compressing into a pellet the material filled into the receptacle comes into contact with the pressing units, wherein the pressing force and/or a parameter characterizing the pressing force is determined, upon reaching a preset pressing force and/or a preset value of the parameter characterizing the pressing force the rotor is arrested and rotated in the opposite direction, such that the punch pair comes out of contact with the pressing units.