Patent ID: 9050771
Filing Date: 2015-06-09
Classification: B31C

Abstract:
1. A machine for producing tubes by winding one or more strips of web material comprising: a spindle; a winding unit cooperating with said spindle to wind said one or more strips of web material about said spindle and form a tubular element; a cutting unit with at least one discoidal cutting tool, said cutting tool having a first side and a second side, to divide said tubular element into tubes having predetermined lengths; at least one circular pressure element having a rotation axis parallel to or substantially coaxial with a rotation axis of said at least one cutting tool and arranged adjacent one of said first side and said second side of said at least one cutting tool, to compress the tubular element between said spindle and said at least one pressure element adjacent to a cut by said at least one cutting tool; wherein said at least one circular pressure element is supported in an adjustable position with respect to a position of the at least one cutting tool so as to be adapted to adjust reciprocal positions between the rotation axis of the cutting tool and the rotation axis of the pressure element to regulate the reciprocal positions of each said rotation axis to compensate for a change in diameter of said cutting tool such that the rotation axis of the cutting tool and the rotation axis of the pressure element following adjustment remain parallel but not coincident.