Patent ID: 7988440

Claim:
An apparatus for the measurement of the vertical position of upper and lower punches, pairwisely associated to a rotatably driven rotor of a rotary tablet press and rotating synchronously with the rotor, which perform a vertical movement in certain regions along the circumference of their rotational movement during a rotation of the rotor, characterised by at least one scale ( 54 ) arranged on at least one of the upper and/or lower punches ( 18 , 20 ), running in parallel to the vertical movement direction of the respective upper and/or lower punch ( 18 , 20 ), and at least one reading device ( 56 ) associated to the scale ( 54 ), also rotating synchronously with the rotor ( 12 ), by means of which a vertical position of the respective upper and/or lower punch ( 18 , 20 ) can be measured by reading out the scale ( 54 ).