Package making – With means responsive to a sensed condition – Of package and filled receptacle closing or opening
Patent
1975-10-16
1976-12-14
McGehee, Travis S.
Package making
With means responsive to a sensed condition
Of package and filled receptacle closing or opening
53373, 53379, 53DIG2, B65B 5702, B65B 704, B65B 706, B65B 5122
Patent
active
039967247
ABSTRACT:
Packaging apparatus for closing and sealing the open end of a carton of thermoplastic coated paperboard material or the like. A rotatable drum has a cylindrical wall that supports a plurality of carton closing and sealing units. During rotation of the drum, open ended cartons are successively picked-up at a carton receiving station and are carried by the drum to a carton delivery station. During the movement of the carton from the receiving to the delivery station, the open end of the carton is folded to a closed condition and the layers of the closed carton end are vibration welded together by one of the carton closing and sealing units. Each carton closing and sealing unit includes a pair of jaws movable between an open and closed position with respect to each other, a latching member for locking the jaws in their closed position, and a vibration welding device. When the jaws are in their open position, the open end of a carton can be received between the jaws, and subsequent closing of the jaws collapses the open end of the carton, with an anvil surface on one of the jaws being disposed to engage one outer surface of the layers of the closed carton end. The vibration welding device includes a horn that vibrates at a predetermined frequency when energized and that extends into engagement with the closed end of the carton to clamp the layers of the closed end of the carton between the surface of the horn and the anvil surface of the jaws to vibration weld the layers together. A jaw operating cam causes the jaws to move between their open and closed positions during rotation of the drum. When the jaws move to their closed position, the latching member moves to its locked position, and a latching member holding cam prevents the latching member from moving from its locked position until the welding operation is completed and the carton approaches the carton delivery station. A latching member release cam is engaged by the latching member as the carton approaches the delivery station to prevent the latching member from remaining in its locked position as the carton approaches the delivery station.
REFERENCES:
patent: 2428192 (1947-09-01), Berch
patent: 2751965 (1956-06-01), Miller
patent: 3186143 (1965-06-01), Borkmann et al.
patent: 3280535 (1966-10-01), Reimers et al.
patent: 3370399 (1968-02-01), Egleston
patent: 3494817 (1970-02-01), Whitecar
patent: 3905280 (1975-09-01), Egleston et al.
patent: 3910014 (1975-10-01), Braun
Culver Horace M.
Ex-Cell-O Corporation
McGehee Travis S.
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