| 摘要 |
<p>A method and unit for closing the ends of tubular wrappings (5) on a cigarette packing machine (1), wherein the tubular wrappings (5) enclosing respective groups (3) of cigarettes are fed continuously and successively along an annular path (P) and through two folding stations (21, 24), in the first of which a movable folding member (37) and a fixed folding member (42), common to all the tubular wrappings (5), fold the short sides (9) of a projecting tubular portion (8) of the tubular wrapping (5) to define two projecting major tabs (22), and in the second of which a single rocker arm (46), common to all the tubular wrappings (5), is swung to successively fold the two major tabs (22) while the wall (6) of the tubular wrapping (5) coplanar with each major tab (22) is maintained, during folding, contacting a respective flat supporting wall (16; 60). <IMAGE></p> |
