Patent ID: 8133163
Filing Date: 2012-03-13
Classification: B31B,B65D

Abstract:
1. A machine for forming a barrel from a blank of sheet material, said machine comprising: a body; a mandrel mounted on the body and having an external shape complimentary to an internal shape of at least a portion of the barrel, the mandrel comprising: an ejector plate coupled to the mandrel and substantially perpendicular to the central longitudinal axis, the ejector plate movable along the central longitudinal axis to eject the barrel from the mandrel; at least one member mounted on the body adjacent the mandrel for applying a force to the blank for at least one of folding a portion of the blank around the mandrel and securing portions of the blank together; and at least one servomechanism operatively connected to the at least one member for electrically driving and controlling movement including an angular speed and an angular position of the at least one member, wherein the angular position ranges from an unengaged position where the at least one member does not apply the force to the blank to at least one selected engaged position where the at least one member applies the force to the blank for forming the barrel, the at least one servomechanism configured to rotate the at least one member relative to the body in a first direction and in a second direction opposite the first direction.