Winding or rewinding machine for forming large-diameter reels of weblike material
AssigneeCelli S.p.A.
InventorCelli Marco
Life of this patent
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Abstract
The rewinding machine comprises a pair of lower winding rolls (11, 13) defining a winding cradle, which are movable from an upper position toward a lower position during the winding of a reel (R), in order to keep the axis of the developing reel in an essentially fixed position.
Claims40
A rewinding machine for the production of reels of wound weblike material, including:
- a pair of lower winding rolls defining a winding cradle and means for inserting an axial mandrel into said winding cradle comprising a pair of shaped rolls with actuators which move said shaped rolls into contact with the outer surface of the mandrel and with other actuators that rotate at least to one of the shaped rolls in order to move the mandrel parallel to its own axis.
A rewinding machine for the production of reels of weblike material, the machine comprising:
- a pair of lower wining rolls defining a winding cradle, wherein said lower winding rolls are movable from an upper position toward a lower position during the winding of a reel, in order to keep the axis of the developing reel in an essentially fixed position;
- an axial winding mandrel about which the winding of the reel takes place, said winding mandrel being supported in an essentially fixed axial position, said winding mandrel being axially movable for insertion into the winding zone and retraction from it;
- and
- a pair of motorized shaped rolls that engage on the external surface of said winding mandrel in order to move it axially.
A rewinding machine for the production of reels of weblike material, the machine comprising:
- a pair of lower winding rolls defining a winding cradle, wherein said lower winding rolls are movable from an upper position toward a lower position during the winding of a reel, in order to keep the axis of the developing reel in an essentially fixed position;
- and
- pivoting arms, said winding rolls being supported by said pivoting arms.
A method for the production of reels of wound weblike material, the method comprising the steps of:
- forming a reel on a pair of supporting lower wining rolls;
- winding of the reel of weblike material about an axial winding mandrel to wind the reels onto tubular cores placed on the mandrel;
- gradually lowering the winding rolls during the winding of the reel, in order to keep the axis of the developing reel in an essentially fixed position;
- unloading the reel from the winding rolls so that a new winding cycle can be commenced when the winding of a reel is finished;
- and
- after the winding of a reel is finished and has been unloaded from the winding zone, moving a new tubular core into the winding zone while one of the winding rolls is in a raised position and the other in a lowered position and inserting the mandrel into the core introduced into the winding zone, and then raising the winding roll in the lowered position.
A method for the production of reels of wound weblike material, the method comprising the steps of:
- forming a reel on a pair of supporting lower winding rolls;
- gradually lowering the winding rolls during the winding of the reel by a pivoting movement about axes perpendicular to the direction in which the weblike material is fed, in order to keep the axis of the developing reel in an essentially fixed position;
- and
- unloading the reel from the winding rolls so that a new winding cycle can be commenced when the winding of a reel is finished.
A rewinding machine for the production of reels of weblike material, the machine comprising:
- a pair of lower winding rolls defining a winding cradle, wherein said lower winding rolls are movable from an upper position toward a lower position during the winding of a reel, in order to keep the axis of the developing reel in an essentially fixed position, said laid lower winding rolls move apart from each other during said movement toward a lower position.
A method for the production of reels of wound weblike material, the method comprising the steps of:
- forming a reel on a pair of supporting lower winding rolls;
- gradually lowering the winding rolls during the winding of the reel by a pivoting movement about axes perpendicular to the direction in which the weblike material is fed, in order to keep the axis of the developing reel in an essentially fixed position, said laid lower winding rolls moving apart from each other during said gradual lowering of the winding rolls such that the points of contact of the reel and the winding rollers move apart, providing a support action.
Dependencies are inferred from the claim text.