Gluing group for a rewinding machine for applying glue to an end edge of a log, rewinding machine bearing such group and related gluing method
AssigneeGambini S.P.A.
InventorsGiovanni Buffa, Fabio Picchi
Life of this patent
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Abstract
A gluing group for a rewinding machine for applying glue to an end edge of a log comprising a delivery roller (12) supported in an idle manner by supporting and translation guiding elements (15, 16), delivery means (20) for delivering a glue line (11′″) on one of the generatrices of the delivery roller (12), a linear actuator (30) connected to said delivery roller (12) to transmit the approaching and distancing movement of the delivery roller (12) against the paper (11) being wound onto a contrast roller (115). A rewinding machine comprising such gluing group and a related method for gluing the end edge also form part of the invention.
Claims12
A gluing group for a rewinding machine for applying glue to an end edge of a log, comprising:
- a delivery roller (12) supported in an idle manner by supporting and translation guiding elements (15, 16), delivery means (20) for delivering a glue line (11′) on one of the generatrices of the delivery roller (12), a linear actuator (30) connected to said delivery roller (12) to transmit the approaching and distancing movement of the delivery roller (12) against a paper (11) being wound onto a contrast roller (115), wherein said delivery means (20) for delivering said glue line (11′″) comprise a series of guns (21), glue-fed under pressure and movable transversely along the delivery roller (12), in order to make glue segments on one of the generatrices of the delivery roller (12).
A method for gluing an end edge of a log in a rewinding machine, comprising:
- delivering a glue line (11′) on a delivery roller (12) in an idle manner through a series of guns (21), glue-fed under pressure and movable transversely along the delivery roller (12) in order to make glue segments on one of the generatrices of the delivery roller (12) during the winding step of a log (11′) being formed in a rewinding machine (100);
- putting the delivery roller (12) in contact with the paper (11) against the return roller (115) by means of a linear actuator (30) in a manner phased with the piercing (11″) that is intended for breaking so as to drag the delivery roller (12) in rotation and;
- delivering said glue line (11′″) on the paper (11) being wound in a predetermined position upstream of the piercing line (11″) intended for breaking, which will determine the formation of the end edge;
- moving the delivery roller (12) away from the paper (11), cleaning the same from residual glue and stopping the rotation thereof in order to arrange it to receive a new glue line (11′″).
Dependencies are inferred from the claim text.