Locking mechanism for wrap-around cartons

摘要

The invention relates to a locking mechanism for locking together overlapping base panels of a wrap-around type carton. The mechanism comprises a locking element (50) pivotally mounted on carton conveying means (10) for movement therewith and including a locking finger (60) for insertion into said base panels to form a lock therebetween, a rotatable cam disc (62) for cooperation with a first follower leg (56) provided by the locking element for pivoting the locking finger into a locking position, and a rotatable cam disc (66) for cooperation with a second follower leg (58) provided by the locking element for pivoting the locking finger into a retracted position. The cam discs (62,66) are located at spaced locations along the path of movement of the locking element for interference therewith such that said second follower leg (58) automatically is brought into a position for engagement with its respective cam disc (66) during cooperation between the first follower leg (56) and its respective cam disc (62) and vice versa, whereby the locking element is pivoted sequentially into its locking and retracted positions.