| 摘要 |
A package manufacturing apparatus which can fold a portion-to-be-processed accurately along a folding line without misalignment between the folding line and an actual fold. The package manufacturing apparatus comprises a pair of turnable arms (61), folding-line applicators (68, 80), and two pairs of bending arms (62) and compression coil springs (74). The pair of turnable arms (61) are disposed opposite to each other such that they are swingable. The folding-line applicators (68, 80) nip a portion-to-be-processed of a package in process of forming, form a predetermined folding line in the portion-to-be-processed, and temporarily fold the portion-to-be-processed along the folding line, while each of the turnable arms (61) turns. Each pair of the bending arms (62) and the compression coil springs (74) is disposed between one of the folding-line applicators (68, 80) and the corresponding turnable arm (61) and elastically brings the folding-line applicator (68, 80) into contact with the portion-to-be-processed. As the turnable arms (61) turn, the folding-line applicators (68, 80) nip the portion-to-be-processed of a package in process of forming, form a predetermined folding line in the portion-to-be-processed, and temporarily fold the portion-to-be-processed along the folding line. Since the temporary folding is performed in a state in which the portion-to-be-processed is nipped to form the folding line, the temporary folding can be performed accurately along the folding line. Thus, the portion-to-be-processed can be folded accurately along the folding line without misalignment between the folding line and an actual fold. <IMAGE> |
