| 摘要 |
A carton closing machine including a longitudinal chain with lugs that carry the carton along a longitudinal path, folding down the carton top and passing the front flap thereof over a glue wheel to a cross-feed which carries the cartons laterally with the side flaps passing over a pair of glue wheels and into a rectangular stack defined by four vertical plates. An elevator raises each carton up into the stack to fold down the front and side flaps and then retracts to receive the next carton. Two pairs of belts at the upstream end of the machine carry the cartons to the conveyor chain and a backup chain with small lugs moves along with and between the second pair of belts to boost any carton that may slip on the surface of the belt. The first pair of belts is at a slightly higher elevation so that the backup lugs pass freely beneath cartons supported thereon to engage behind cartons on the second pair of belts.
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