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AssigneeInnse Innocenti Engineering, S.p.A.
InventorsFilippo Cattaneo, Roberto Brioschi, Maurizio Brignoli, Ettore Cernuschi
Estimating the term…
The inventive relates to a rolling unit (5) for rolling rod-shaped or tubular bodies, such as pipes, hollow sections bars, wires etc. The unit (5) is provided with three or more working rolls (20) which have respective rotation axes (A1, A2, A3) lying in a perpendicular plane to a rolling axis (L) along which the unit (5) is disposed. Advantageously, the rolls (20) are mounted on corresponding swinging arms arranged to oscillate in respective planes, perpendicular to the rotation axes (A1, A2, A3) of the corresponding rolls (20) and containing the rolling axis (L). Such a rolling unit can prevent any uncontrolled thermal expansions induced in the swinging arm by the high temperatures sometimes involved in the process, by keeping the rolls in a symmetrical position with respect to the plane of oscillation of the respective arm.
A rolling unit for rod-shaped or tubular bodies, comprising an outer structure (S), at least three rolls (20) journalled on respective swinging arms (30) whose rotation axes (A1, A2, A3) lay substantially perpendicular to a rolling axis (L) along which the unit is laid, characterized in that each said swinging arm includes a pivot pin mounted to the outer structure so that said swinging arm is pivoted on an axis of said pivot pin and can be oscillated in respective planes substantially perpendicular to the rotation axes of the corresponding rolls and containing said rolling axis, and an adjustment device (35) is associated with each swinging arm (30), said adjustment device including a fixed part (35a) connected to the outer structure (S) of the unit and a moving part (35b) arranged to move along a radial direction to the rolling axis (L) and to act on the corresponding arm.
Dependencies are inferred from the claim text.