Rotor machine for cutting-off hollow articles

摘要

A rotor machine designed to cup-off bellows' throats comprises a device for cutting-off the bellows' throats in the form of a rotor. Said device comprises a shaft, slides arranged parallel to the shaft axis and provided with mandrels for receiving the bellows, and tool units, each tool unit comprising a cutting tool in the form of a pair of cutters. One of said cutters, cylindrical in shape, is installed in the hollow holder coaxially with its inner surface which is eccentric relative to its outer surface. The other one of said cutters is made in the form of a ring consisting of two half-rings, the longitudinal axis of said ring being coaxial with the axis of the inner surface of the hollow holder at the moment of receiving the bellows to be cut-off. The half-rings are adapted for closing radially when clamping the bellows and for opening when releasing the bellows after its throat has been cut-off. The rotor machine according to the invention ensures high-quality cutting-off of bellows' throats and a more efficient use of labor.