초록 ▼

Packs 12 of coffee or the like centrally disposed on a carton blank 11 are pushed down into the mouth of a holder compartment 53 by a ram sensing plate 33 under predetermined pressure, which folds up the side walls 16, 17 of the blank in a U-shape. Pivot arms 41, 42 disposed on opposite upper sides

Packs 12 of coffee or the like centrally disposed on a carton blank 11 are pushed down into the mouth of a holder compartment 53 by a ram sensing plate 33 under predetermined pressure, which folds up the side walls 16, 17 of the blank in a U-shape. Pivot arms 41, 42 disposed on opposite upper sides of the compartment and having vertically spaced embossing edges 38, 39 at their ends are then moved inwardly to crease the side walls at the height of the compressed packs in cooperation with sharp edges 34, 35 of the sensing plate. The latter is then withdrawn, whereafter horizontally movable folding tools 51, 52 move in laterally to bend down and overlap the upwardly extending coverwall tabs 19, 20.

대표청구항 ▼

An apparatus for folding a carton blank (11) around a plurality of individual packs (12), comprising: (a) first means for folding a carton blank in a U-shape around a plurality of individual packs arranged thereon to define upstanding opposite side walls (16, 17) extending into cover tabs (19, 20),

An apparatus for folding a carton blank (11) around a plurality of individual packs (12), comprising: (a) first means for folding a carton blank in a U-shape around a plurality of individual packs arranged thereon to define upstanding opposite side walls (16, 17) extending into cover tabs (19, 20), (b) means for vertically compressing the contents of the packs under predetermined pressure to establish the height thereof, (c) means for horizontally creasing the upstanding side walls to define folding edges (22, 23) thereon at a height corresponding to the established height of the compressed packs, and (d) second means for folding in the cover tabs at said creased edges over the tops of the compressed packs in an overlapping manner, wherein the means for compressing comprises a vertically movable, horizontal sensing plate (33), wherein the creasing means comprises two pairs of vertically spaced embossing edges (38, 39) individually disposed outwardly of the side walls and movable laterally inwardly into creasing engagement therewith, said sensing plate having sharp edges (34, 35) on opposite sides thereof cooperable with said embossing edges to form said folding edges, and wherein said sensing plate adjoins a vertically upstanding ram member (32), wherein said embossing edges are defined on lower ends of crank arms (41, 42) pivotally mounted to said ram member, and wherein upper ends of said crank arms are pivotally joined for simultaneous movement.