Patent ID: 6748866
Filing Date: 2004-06-15
Classification: B31F,B44B,Y10S

Abstract:
A method of precisely positioning a male die member (34) on a backing roller (14) of a stamping station (10), which backing roller co-operates with a stamping roller (12), wherein at its cylindrical peripheral surface (16) the stamping roller (12) has a die (18) with a die relief structuring and the male die member (34) which is provided with a male die member relief structuring (48) negatively corresponding to the die relief structuring (20) is positioned on the cylindrical peripheral surface (16) of the backing roller (14) in accurate fitting relationship with the die (18) on the cylindrical peripheral surface (16) of the stamping roller (12),characterised in that a thin flexible bendable transfer male die member (24) having a fitting window (32) is temporarily fixed in accurately positioned relationship to the die (18) of the stamping roller (12), that the transfer male die member (24) is transferred from the stamping roller (12) to the backing roller (14) and fixed to the backing roller (14), wherein the stamping roller (12) and the backing roller (14) are driven in rotation in mutually opposite relationship at mutually corresponding peripheral speeds, and that then the male die member (34) is fixed in accurate fitting relationship in the fitting window (32) of the transfer male die member (24) fixed to the backing roller (14), wherein the male die member (34) provided with the male die member relief structuring (48) comprises a thin material which is stable in respect of shape and which has a cylindrical curvature (R) corresponding to the curvature (R) of the cylindrical peripheral surface of the backing roller (14).