Importance

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Abstract

An adjusting method for a rotary tablet press with an angle pulse encoder for evaluating the pressing force course at the individual punches in at least one pressing station, in which the angle pulse encoder per revolution of the press rotor produces a pulse per revolution and per rotational angle value produces an angle pulse, characterised by the following steps: the angle pulse encoder is rigidly assembled relative to the rotor shaft in any position the rotor with a predetermined punch is moved visually under the middle of a main pressing roller (coarse position) the rotor is rotated until the pulse per revolution appears, and the angle pulses until the pulse per revolution are counted by a machine computer and their number is stored the computer computes the coarse positions of all punches, expressed in angle pulses, in relation to the pulse per revolution and produces on rotation of the rotor one coarse position pulse per punch in the computer to each coarse position there is allocated a measuring window extending on both sides of the coarse position in operation of the tablet press at each angle pulse in the measuring window or over the whole coarse of the signal per punch the pressing force course is scanned the computer evaluates the real punch positions at the pressing force maxima or minima and determines the deviation (k) of the real positions from the coarse positions the computer evaluates from the individual deviations a correction factor for determining the fine position of the punches.

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First Claim