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AssigneeFabio Perini S.p.A.
InventorsMauro Gelli, Romano Maddaleni, Graziano Mazzeccherini
Estimating the term…
The rewinding machine comprises: a first winding roller (11) and a second winding roller (13) defining a nip (15) through which said cores are inserted and through which said web material (N) is fed; and at least one pair of motorized engaging members (57), to engage the ends of a winding core and transmit a rotational movement to the core during at least part of the winding cycle of each log. The engaging members and the first and second winding roller are produced and disposed so that the log being formed is in contact with said first and said second winding roller. Moreover, a third winding roller (17) is provided, defining a winding space with said first and said second winding roller, said third winding roller being movable to allow increase and completion of winding of each log in said winding space.
A rewinding machine for winding web material (N) in logs (R) about winding cores (C, C2), comprising:
Rewinding machine as claimed in one or more of the previous claims, characterized in that said first and said second oscillating arm are disposed and controlled so that, during at least a portion of the winding cycle of each log (R), the axis of the third winding roller translates along a straight line (T) along which the axis of the log (R) being wound moves.
Rewinding machine as claimed in one or more of the previous claims, characterized in that it comprises a single pair of said engaging members (57).
Rewinding machine as claimed in one or more of the previous claims, characterized in that the engaging members (57) are disposed and controlled to engage each core (C, C2) after it has been carried in rotation and into contact with the web material.
Rewinding machine as claimed in one or more of the previous claims, characterized in that the engaging members are designed and arranged to disengage from the core before winding of the log has been completed.
Rewinding machine as claimed in one or more of the previous claims, characterized in that it comprises a core inserter (47) to sequentially insert the winding cores into the nip (15) between the first and the second winding roller, each core inserted by said inserter being subsequently engaged by said engaging members.
Rewinding machine as claimed in one or more of the previous claims, characterized in that each of said engaging members (57) comprises at least one inflatable chamber (71) to clamp the winding core.
Method for winding logs of web material around winding cores, comprising the steps of:
A rewinding machine for producing logs of web material, comprising a first winding roller (11), a second winding roller (13) and a third winding roller (17) defining a winding space, the third winding roller being supported by at least a first arm (19) oscillating about a first axis of oscillation (A), said at least one oscillating arm (19) being associated with a first actuator (23) to control oscillation of said at least one first oscillating arm (19);
Method for winding logs of web material around winding cores, comprising the phases of:
Dependencies are inferred from the claim text.