Rewinder machine for the production of rolls of web material
AssigneeFabio Perini S. P. A.
InventorsGuglielmo Biagiotti, Raffaello Bonacchi, Angelo Benvenuti
Life of this patent
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Abstract
The rewinder machine comprises: a first winding roller (3); a second winding roller (5), defining with said first winding roller (3) a winding cradle; a feeder (33) for sequentially introducing winding cores to said winding cradle; an optional glue applicator (21) for applying glue to said cores. The feeder (33) may include an element (39) for applying glue to the winding cores while they are being fed to said winding cradle. In a special embodiment, the feeder is mechanically linked to a system for unloading the roll from the winding cradle.
Claims48
A rewinder machine for producing rolls of web material wound around winding cores, comprising:
- a first winding roller,
- a second winding roller, defining with said first winding roller a winding cradle,
- a feeder for sequentially introducing winding cores to said winding cradle,
- a gluer for applying glue on said cores, wherein said feeder includes at least one element for applying said glue to the winding cores during their introduction to said winding cradle, said element including at least one elongated member that can be immersed in a container of glue arranged beneath a zone for picking up the winding cores, said elongated member covering itself in glue in said container and transferring said glue by contact to each core sequentially picked by said feeder.
A method for producing rolls of web material wound around winding cores comprising
- completing winding of a first roll around a winding core in a winding cradle,
- upon termination of winding said first roll, inserting a new winding core via a feeder to said winding cradle and unloading the first roll from the winding cradle, with glue being applied to said new winding core,
- wherein said glue is applied on said new winding core via said feeder, which is immersed at least partially in a container of glue and lifted from the container to the new winding core, said feeder pushing said winding core into a nip defined between a first winding roller and a second winding roller.
A rewinder machine for producing rolls of web material wound around winding cores, comprising:
- a first winding roller,
- a second winding roller, defining with said first winding roller a winding cradle,
- a feeder for sequentially introducing winding cores to said winding cradle,
- wherein an extractor member, for extracting a roll formed in said winding cradle, is mechanically linked to said feeder.
A method for producing rolls of web material wound around the winding cores comprising
- completing winding of a first roll in a winding cradle,
- upon termination of said winding of said first roll, inserting a new winding core via a feeder to said winding cradle and unloading the first roll from the winding cradle via an extractor member,
- wherein said feeder and said extractor member are controlled by a common member.
A rewinder machine for production of producing rolls of web material wound around winding cores, comprising a first winding roller;
- a second winding roller defining with said first winding roller a winding cradle;
- a feeder for sequentially introducing winding cores to said winding cradle;
- a gluer for gluing a free end edge of the rolls made by said machine, and a common actuator member which controls movement of said feeder and movement of said gluer.
A rewinding machine for producing rolls of web material wound around winding cores comprising only two winding rollers forming a winding cradle, on which rolls of web material are sequentially formed, wherein said web material is fed continuously to said cradle, said winding rollers are maintained in rotation during discharge of a completed roll and insertion of a new winding core.
A method for subsequently forming rolls of web material wound around winding cores comprising
- providing a first winding roller and a second winding roller forming a winding cradle;
- continuously feeding said web material to said winding cradle to form a roll in said cradle,
- and contacting the roll with only said two winding rollers and during formation of said roll;
- upon completion of said roll, discharging said roll from said cradle, inserting a new core in said cradle and severing said web material without interrupting feeding of said web material.
Dependencies are inferred from the claim text.