US 5,322,230 A · Method and apparatus for preparing a replacement paper roll for flying roll change, particularly to supply paper to a rotary printing press

Abstract

To automate the preparation of a replacement paper roll for flying roll changing, initial layer portions of web material from the replacement paper roll and which, typically, are damaged, are rolled on a scrap roll (2) to form scrap material windings thereon. In a first moving step, the scrap roll (2) is placed in engagement with the replacement paper roll to wind scrap material thereon. When a sensing element (22) senses that the paper is suitable for printing, the scrap roll is moved away from the replacement roll (1) and into a preparation or processing position (FIG. 11). At that processing position, two spaced axially extending perforation or tear lines (4, 5) are formed in the beginning portion. In a third moving step, the beginning portion is placed in engagement with the paper roll by moving the scrap roll back towards the replacement roll and, preferably, adhered thereto temporarily by a holding adhesive. In a fourth moving step, the paper on the scrap roll and on the replacement is severed along one (5) of the perforating lines, and the scrap roll is then moved away from the replacement roll for removal of scrap material thereon. Preferably, all elements other than the replacement paper roll are retained in a frame which can be moved towards and away from the replacement roll, and includes the elements, as well as drive and guide devices therefor.

Claims20

Dependent claims

A method for preparing a replacement paper roll (1) to permit flying roll changing with an expiring roll being supplied to a printing machine,

wherein initial portions (3) of the roll form scrap material, and subsequent to removal of the scrap material, the subsequent beginning portion of the roll is supplied with perforations and with a connection adhesive intended for connection to the expiring roll, comprising the steps of
in a first moving step, relatively moving a scrap roll (2) and the replacement paper roll (1) towards each other;
in a second moving step, relativing moving the scrap roll (2) and the replacement paper roll (1) to place the beginning portion (10) of the replacement roll, subsequent to the initial portion forming the scrap material, away from the circumference of the replacement roll and into a preparation or processing position;
applying two essentially parallel perforation or tear lines (4, 5) extending axially with respect to the roll on said beginning portion while the beginning portion is in said preparation or processing position;
in a third moving step, relatively moving the scrap roll (2) and the replacement paper roll (1) to place the beginning portion (10) in engagement with the outermost layer of the replacement paper roll (1);
in a fourth moving step, relatively moving the scrap roll (2) and the replacement paper roll (1) to sever the scrap material at one (5) of said perforation or tear lines from the beginning portion (10), while the beginning portion is in engagement with the replacement roll (1);
and
removing scrap material from the scrap roll (2). PG,16

5 more elements

An apparatus for preparing a replacement paper roll (1) for flying roll changes with an expiring roll being supplied to a printing machine,

said apparatus comprising
a scrap roll (2) receiving initial portions (3) of layers from the replacement roll and forming scrap material;
adhesive application means (20, 23) for applying holding adhesive and connection adhesive, respectively, to a beginning portion (10) of the replacement roll, which beginning portion is located adjacent to said initial portion (3) of scrap material;
two perforating means (14, 15, 18;
L, C) to form two essentially parallel, essentially axially extending perforating or tear lines (4, 5) in said beginning portion (10);
a drive means (2a) coupled to rotate and drive the scrap roll (2);
and
moving means (13, 13a) for relatively moving the position of the scrap roll (2) with respect to the replacement roll (1) between a first position, in which the scrap roll is in engagement with, or close to the replacement roll (1), and a second position, in which the scrap roll is spaced from the replacement roll to extend the beginning portion of the web material away from the replacement roll (1) to said second position, and place the beginning portion (10) in a preparation or processing position and, while the beginning portion is in said preparation or processing position, permit perforation of said beginning portion by said perforating means.

5 more elements

Dependencies are inferred from the claim text.

Method and apparatus for preparing a replacement paper roll for flying roll change, particularly to supply paper to a rotary printing press

Life of this patent

Method and apparatus for preparing a replacement paper roll for flying roll change, particularly to supply paper to a rotary printing press

Life of this patent

Abstract

Claims20