| 摘要 |
A pallet tier cap forming apparatus is provided for forming a horizontal planar paperboard blank into a pallet tier cap. The blank includes a generally rectangular center panel having four edges, and four flaps connected by fold lines with the center panel edges, respectively. A blank transport device initially displaces the blank laterally in a first diagonal direction for simultaneous engagement with a first orthogonally arranged pair of drag walls, and vertically upwardly, thereby to break downwardly about associated fold lines a first pair of adjacent flaps of the blank. The blank is further displaced laterally in the first direction, thereby to reversely fold back the first pair of flaps about the associated wall junctions toward an acute angle relative to the blank center panel. The blank is then displaced in the opposite diagonal direction, and the forming steps are repeated to fold downwardly simultaneously a second pair of flaps. |
