Importance

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Abstract

Apparatus for opening flattened cartons having a pair of minor flaps and a pair of major flaps. A constant speed conveyor carries a horizontally disposed flattened carton across an actuator having a cam surface. The cam surface moves upward to fold one pair of major and minor flaps upward and then downward to fold the other pair of major and minor flaps downward. A clamp grasps the upward folded major flap and draws it upward as the conveyor moves the carton forward causing the carton to open. The clamp releases the major flap and the carton moves past a glue gun which applies glue to the minor flaps. A pair of curl bars folds the major flaps against the glue coated minor flaps. An extending platen presses the flaps against a roller bank permitting the glue to set. The platen retracts and the opened and bottom-sealed carton is completed.

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First Claim