Futura S.p.a.

Ciro Guarini

Giovacchino Giurlani

Gabriele Betti

A cutting machine for the transversal cutting of paper material logs, including: a structure on which are moved the logs; a cutting unit including a blade; at least one sharpening unit with two grinding wheels; a positioning device for positioning the grinding wheels with respect to the blade. The positioning device includes: a primary carriage and two secondary carriages supported by the primary carriage; a sensor for detecting the radius of the blade and configured to stop the primary carriage when the grinding wheels are arranged with the respective axes at a given distance from the axis of the blade. In a second phase of positioning the grinding wheels, the secondary carriages are controlled so as to bring the abrasive side of the wheels into contact with the blade.

Cutting machine for transversely cutting logs of paper material

Sharpening device for sharpening blades mounted on cutting machines, comprising two grinding wheels () supported by respective movable supports () adapted to move said grinding wheels () from a standby or rest configuration in which the grinding wheels () are positioned at a predetermined distance from the blade () to an active configuration in which the grinding wheels () are in contact with a cutting edge () of the blade () and vice-versa along a predetermined trajectory (R, R). The movable supports () are adapted to move said grinding wheels () along respective arcuate trajectories, such that the contact of each grinding wheel () with a respective side of the cutting edge () of the blade () is progressive, whereby the contact between the grinding wheels and the blade increases progressively when the device passes from the standby rest configuration to the active configuration.

Device for sharpening blades

An apparatus for cooling the cutting device of paper logs cutting machines including a channel () surrounding the cutting device, in which channel a cooling fluid is injected, the cooling fluid being confined inside the channel.

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Pisa, Italy

Ciro Guarini