Package making – Closing packages and filled receptacles – By means adapted to engage outturned seam of package cover
Patent
1983-08-16
1985-04-09
Heinz, A. J.
Package making
Closing packages and filled receptacles
By means adapted to engage outturned seam of package cover
493178, 493185, B65B 5700, B65B 1924
Patent
active
045093121
ABSTRACT:
A device for bending down and sealing triangular lugs that are formed on the top of a cardboard carton includes a conveyor for moving cartons in a running direction with the cartons having outstretched lugs. A plurality of clamp sets are connected to the conveyor which each include a base plate to which is connected a vertically downwardly extending pushing plate that pushes the cartons. Two or more spaced apart clamp members are movable on the base plate for movement toward each other and away from each other. A driver on the base plate has a cam follower and cooperates with a clamping cam to move the clamp members together and apart. A hot air blower is provided for blowing hot air against the undersurfaces of the lugs and side surfaces of the carton which are partially fused. A push up bed is used to push a carton up between the clamp members to bend the lugs down to sides of the carton. The clamp cam then cooperates with the cam follower to move the clamp members together to seal the partially fused lugs to the sides of the carton and also to support the carton. The carton can then be transported in the running direction to an appropriate drop off location whereat the cam releases the cam followers so that the clamp members can release the carton.
REFERENCES:
patent: 3831343 (1974-08-01), Dominici
patent: 3978639 (1976-09-01), Ferrozzi
Ace Pak Company Incorporated
Heinz A. J.
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