Silencer shell forming apparatus

摘要

In a silencer shell forming apparatus, a mandrel is divided into an upper segment and a lower segment as well as both the segments are permitted to move in a vertical direction to dispense with a setup job when a different type of a shell is formed. Further, a drive mechanism is provided to cause both the segments to move in a direction where they become nearer to each other and in a direction where they are separated from each other.