| 摘要 |
A device for the uninterrupted changeover of a plastic band (13, 13') from a first drum having a web (3, 3') of this band to a second drum having a web (3, 3') of the same plastic band (13, 13') comprises, apart from the two drums, a cutting (9, 9') and gluing device (5) and also control means (6) for actuating the various drives. …<??>To reduce deficiencies in packages in the package-making machine although said machine is maintained in continuous operation even during the drum changeover, the invention provides that the deflecting rollers (15, 16, 18, 21), guide rollers (8, 8') and pressing rollers (7, 7') are arranged symmetrically so as to be adjustable with respect to a centre line (m) which runs perpendicularly to the connecting line (v) of the axes (4, 4') of the two webs (3, 3'), one pressing roller (7, 7') is in each case displaceable relative to the other, and the displacement drive (31, 31') for this can be controlled by a switch (10, 10') which is actuated as a function of the position of a web- sensing roller (26, 26'). …<IMAGE>… |
