US 12,404,136 B2 · Method for extracting a core from a reel, machine and extraction station to carry out such method

Abstract

A method for extracting a core (1) from a reel (2) of paper is described, where the reel (1) has been wound in a winding station upstream of an extraction station (100) of the core (1); the method comprises the steps of providing an extraction element (3) having an expandable element (4), shaped to enter, when in the non-expanded form, within a cavity (5) defined by the inner wall (6) of the core (1) of the reel (2), the core (1) extends according to a central axis (X) which is substantially horizontal when the reel (2) is positioned for extraction; inserting the expandable element (4) of the extraction element (3) in the cavity (5) of the core (1) on which a roll of paper (20) is wound; expanding the expandable element (4) until it engages the inner wall (6) of the core (1); pulling the extraction element (3) in the opposite direction to that of insertion, to extract the core (1) from the reel (2); bring the expandable element (4) back to the non-expanded form; extracting the expandable element (4) from the core (1). A machine (10) for extracting a core (1) from a reel (2) of paper by means of such method and an extraction station (100) for extracting a core (1) from a reel (2) of paper comprising such machine (10) are further described.

Claims13

Dependent claims

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.

5 more elements

A machine for extracting a core from a reel of paper comprising:

a support;
and
at least one extraction element placed on said support and extending along a substantially horizontal main extension direction (W) between a first end and a second end;
said extraction element comprising an expandable element configured to switch between a non-expanded shape in which it is shaped to enter within a cavity defined by the inner wall of a core and an expanded shape in which it is configured to exert a pressure on the inner wall of said core;
said extraction element being movably connected to said support and being configured to penetrate the cavity inside said core by a predetermined length,
wherein said extraction element is configured to travel with respect to said support a first stroke in the direction of the reel to penetrate the cavity by said predetermined length, said support comprising a first guide to which said extraction element is slidingly constrained;
said first guide extending along a direction parallel to the central axis (X) of the core and having a first length (L1) equal to said first stroke.

4 more elements

Dependencies are inferred from the claim text.

Method for extracting a core from a reel, machine and extraction station to carry out such method

Life of this patent

Method for extracting a core from a reel, machine and extraction station to carry out such method

Life of this patent

Abstract

Claims13