A punch reel for use in a rotary punch.

摘要

A quick change punch reel for a rotary press comprises a transversely split annular main body member having radially extending cylindrical sockets (128) for receiving individual punches (108), each punch (108) having a head (160) and a base (162) and an outer cylindrical sidewall (164) with a circumfer­ential undercut (166) including a tapered wall (170) extending toward the base of the punch. The sockets (128) are adjacent a planar side face (124) of the main body member and cylindrical bores (142) are formed through the side face (124) in alignment with and intersecting the sockets (128) with the bores (142) having counterbores (144) at the side face (124). Punch retaining plungers (146) are spring-­biased into the bores and counterbores (144) by means of a transversely split cap plate (158) which is secured to the side face (124) of the main body member. Cylindrical punches (108) may be exchanged in the sockets (128) by retracting the plungers (146) against the compressive force of individual springs (156).