Abstract: 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.

Abstract: The rotary machine, particularly for manufacturing bellows-type articles, includes a shaping device with a rotor. The shaft of the rotor has mounted thereon a drum carrying slides, each slide being adapted to accommodate a hollow blank, to advance it into the axial bore of the respective female die and to fill the internal space of the blank with a liquid medium under pressure. The auxiliary drum likewise mounted on the rotor shaft carries male dies. A holder structure for the female dies, arranged coaxially with the male dies, is mounted on the rotor shaft intermediate the two drums. Each female die includes a plurality of closed-end sleeves received coaxially one within another, each sleeve having a bore in the bottom thereof to accommodate a blank therein and having grooves on the external surface of this bottom to form corrugations in the article being manufactured.