| 摘要 |
A method and apparatus is provided for fastening clasps (19) to bags or envelopes (10) during the manufacture thereof. The clasps (19) are secured to the conveyed envelope blank immediately after a folding step in which lateral side flaps (13, 14) of the envelope blank are folded over to form a rear wall (12). The apparatus for securing the clasps is disposed at the downstream end (21) of the folding machinery (20, 23), and has a stationary abutment or support (6) against which prongs of the clasps (19) are bent as the fastening proceeds. The clasps are fed to the envelope rear wall by a rotating wheel (4) which forces the prongs through the overlap zone (16) of the rear wall flaps (13, 14) and co-operates with inclined curved guide surfaces (42, 43) of the support (6) to bend the prongs gradually outwardly. …<IMAGE>… |
