Pressing method and system wherein cushion platen is lowered by cooperation of shock absorbers and cylinders before holding of blank between die and pressure ring

Abstract From the Canadian patent

Pressing method and system wherein a drawing operation on a blank is performed by die and punch while the blank is held between the die and a pressure ring by a blank holding force which is generated based on a movement resistance of the cushion platen and which is transmitted to the pressure ring through first cylinders and cushion pins and wherein during a downward movement of the die toward the pressure ring the cushion platen is moved downwardly against the movement resistance before holding of the blank between the die and the pressure ring by cooperation of second cylinders disposed on the cushion platen and communicating with the first cylinders and shock absorbers disposed between …