| 摘要 |
<p>Apparatus for automatically folding the end closure of a carton of rectangular cross section which includes a cover panel (19) hinged to a rear sidewall of the carton and a pair of flanking gusset panels (21, 23) which are each respectively hinged to one edge of the cover panel (19) and to an adjacent sidewall (15,17). The carton is continuously moved along a conveyor path (31) with one (21) of the gusset panels leading and the other (22) trailing. A folding head (77) moves along a parallel conveyor path and translates to a location adjacent the carton. An abutment (67) adjacent the conveyor path contracts the leading gusset panel (21) and folds it inward along a line (21a) at about a 45° angle to its hinged edges. An arm (99) mounted on the folding head (77) is caused to swing relative to the conveyor to fold the trailing gusset panel (23) inward along a line at about 45° angle to its hinged edges.</p> |
