Importance

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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.

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First Claim