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.
Claims13
1) Gluing group for a rewinding machine for applying glue to an end edge of a log, characterised in that it comprises 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).
13) Method for gluing an end edge of a log in a rewinding machine characterised in that it comprises the following steps:
- delivering a glue line (11′″) on a delivery roller (12) in an idle manner through delivery means for delivering a glue line (20) 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 a 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.