Patent ID: 8490529
Filing Date: 2013-07-23
Classification: B30B,Y10T

Abstract:
1. A compression punch for a rotary press, constructed and arranged to be guided in guide bores of punch guidings, and to cooperate with bores in a die plate of the rotary press, the compression punch with a punch shaft that has a punch head at its one end wherein the punch head cooperates with compression rollers of the rotary press and means for accommodating a separate punch insert at the other end, and with fastening means for detachably fastening the punch insert on the punch shaft, characterised in that the punch head and the punch shaft ( 14 , 14 a ) have an axial through bore ( 16 ), the axial through bore ( 16 ) accommodates a drawbar ( 20 , 20 a ) that has a tensioning head ( 22 , 22 a ) at the end turned away from the punch head ( 12 ), said tensioning head having at least one connection portion, the punch insert ( 32 , 32 a ) has a recess ( 34 ) at the end facing the punch shaft ( 14 , 14 a ) which is realised to be detachably connectible with the connection portion, and that tensioning means are arranged in the axial through bore ( 16 ), by which the drawbar ( 20 , 20 a ) can be tensioned in the direction of the punch head ( 12 ), and further characterised in that the tensioning head (