DEVICE AND METHOD FOR CONVERTING A WEB ON A CENTRAL PROCESSING DRUM

摘要

A machine and method for converting a web having an indefinite length which includes a plurality of converting stations (34, A, B, C) circumferentially spaced about a process drum (22). At least one of the converting stations (34) includes a helical follower gear (52) operatively meshing with a helical drive gear (44) attached to the process drum (22). Movement of the follower gear (52) along its axial direction provides for the relative rotational registration of a tool (40a, 40b) on the registrable converting station (34) relative to the web. Further disclosed is a tensioning mechanism (210) for webs being unwound from supply rolls (260, 262) mounted coaxially side-by-side. Each web roll (260, 262) is mounted individually on a spindle (220, 230) which is individually breakable by means of a brake disk (226, 238).