Sms Innse S.p.a.

Marcello Pacher

Paolo Marin

Guido Emilio Zanella

Claudio Pavesi

Giuseppe Cavone

The present invention relates to a rolling millwhich defines a rolling axis X and comprises at least two rolling stations. At least one rolling station comprises a fixed structure, a roll-holder cartridgeand three actuators. The cartridge is connected removably to the fixed structure and comprises three rolling rolls. The rolls are movable radially and rotatable about three respective axes arranged at 120&#xb0; from each other. The three actuators are mounted on the fixed structure and comprise pistonsmovable along respective radial axes t arranged at 120&#xb0; from each other. Each of the actuators is able, during use, to act on one of the rolls so as to impart a radial force suitable for rolling the article. The rolling millaccording to the invention is characterized in that the three actuators are of the single-stroke type and are arranged so that, when the pistons of two actuators are completely retracted to the end-of-travel stop of the working stroke, a path P is created free from obstacles and parallel to the axis of the third actuator. The path P which is created is such that allows the cartridge to pass out laterally on the opposite side to that where the third actuator is situated.

Rolling mill for long articles

The invention relates to a rolling mill defining a rolling axis and comprising rolling stations. At least one rolling station comprises a fixed structure, a roll-holder cartridge and three actuators. The cartridge is connected removably to the fixed structure and comprises three rolling rolls. The rolls are movable radially and rotatable about three respective axes. Three actuators of the single-stroke type are mounted on the fixed structure and comprise pistons movable along respective radial axes to impart a force on the rolls for rolling an article. Three gearmotors provide the rolls, by means of spindles, with the torque for feeding the article along the rolling axis. When two pistons are completely retracted, a path is created free from obstacles allowing the cartridge to pass out laterally. Then, one spindle may be subject to a rotation-translation to be removed from the path, the respective gearmotor being fixed on its base.

A re-turning plant for rollers of rolling mills of the type comprising at least one roller stand and a plurality of rollers mounted to respective arms pivoting in the plane of the roller stand about respective pins that are fixed to the roller stand. The rollers are positioned within the roller stand in a work position in which work surfaces of the rollers determine the outer profile of a body to be rolled. The re-turning plant comprises a support structure configured to support the whole roller stand in a turning position, a tool-holding device that can be displaced in contact with the work surfaces of each roller fixed in the roller stand and mandrel means with means that can be rotatably coupled to each roller of the plurality of rollers fixed to the roller stand to rotate the same substantially in the work position.

Re-turning plant for rollers of a roller mill

A re-turning plant () for rollers () of rolling mills of the type comprising at least one roller stand () and a plurality of rollers () mounted to respective arms () pivoting in the plane of the roller stand () about respective pins () that are fixed to the roller stand (), the rollers () being positioned within the roller stand () in a work position in which work surfaces () of the rollers () determine the outer profile of a body to be rolled, wherein the re-turning plant () comprises a support structure () configured to support the whole roller stand () in a turning position, a tool-holding device () that can be displaced in contact with the work surfaces () of each roller () of the plurality of rollers () fixed in the roller stand () and mandrel means () with means () that can be rotatably coupled to each roller () of the plurality of rollers () fixed to the roller stand () to rotate the same substantially in the work position.

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Bareggio, Italy

Marcello Pacher