Patent ID: 8430232

Claim:
A conveyor device, in particular for an automatic packaging machine for paper rolls, the device comprising: a plane of advance; at least one pair of motorised flexible transmission members extending along a closed loop and bearing a plurality of transverse bars fastened to said at least one pair of motorised flexible transmission members; a plurality of thruster elements borne by said transverse bars; and a stationary adjustment station provided with at least one adjustment assembly arranged in such a way as to displace in transverse direction along the respective transverse bar at least one respective thruster element which is temporarily located in the adjustment station; wherein said pair of motorized flexible transmission members and said adjustment assembly are controlled such that: said motorized flexible transmission members selectively move one of said transverse bars in said stationary adjustment station; when said transverse bar has been positioned in said stationary adjustment station, said motorized flexible transmission members are stopped and said at least one adjustment assembly is activated to displace said at least one thruster element along said transverse bar from a first starting position to a second final position, said positions being distanced along said transverse bar; after said at least one thruster element has been displaced from said first starting position to said second final position, said flexible transmission members are re-activated to move said bar out of said stationary adjustment station.