US 12,404,136 B2
Method for extracting a core from a reel, machine and extraction station to carry out such method
Fabio Picchi, Lammari (IT); Giovanni Buffa, Ponte Buggianese (IT); and Paolo Lazzareschi, Lucca (IT)
Assigned to GAMBINI S.P.A., Milan (IT)
Filed by GAMBINI S.P.A., Milan (IT)
Filed on Jul. 10, 2023, as Appl. No. 18/219,786.
Claims priority of application No. 102022000015087 (IT), filed on Jul. 19, 2022.
Prior Publication US 2024/0025686 A1, Jan. 25, 2024
Int. Cl. B65H 19/22 (2006.01); B65H 75/24 (2006.01)
CPC B65H 19/2292 (2013.01) [B65H 75/243 (2013.01); B65H 2301/41854 (2013.01); B65H 2405/461 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for extracting a core from a reel of paper, said reel having been wound in a winding station upstream of an extraction station of said core, said method comprising:
providing an extraction element having an expandable element, shaped to enter, when in the non-expanded form, within a cavity defined by the inner wall of the core of said reel, said core extending along a central axis (X) which is substantially horizontal when the reel is positioned for extraction;
inserting the expandable element of said extraction element in said cavity of said core on which a roll of paper is wound;
expanding said expandable element until it engages the inner wall of the core;
pulling said extraction element in the opposite direction to that of insertion, to extract said core from said reel;
bringing said expandable element back to the non-expanded form; and
extracting said expandable element from said core,
wherein said bringing said expandable element back to the non-expanded form is performed subsequent to the pulling the extraction element in the opposite direction to that of insertion.