Patent ID: 6427425
Filing Date: 2002-08-06
Classification: B65B,G05B

Abstract:
A packaging machine disposed below article dropping means for intermittently dropping a batch of articles to be packaged, said packaging machine comprising:film transporting means for bending an elongated film into a tubular form and transporting said tubularly formed film in a longitudinal direction; a longitudinal sealer for sealing side edges of said tubularly formed film together in said longitudinal direction; a pair of transverse sealers for clamping said longitudinally sealed film therebetween transversely to said longitudinal direction at a clamping position to produce a bag; controlling means for controlling motion of said transverse scalers; and a display device displaying markers indicative of a transverse sealer arrival time at which said sealer controlled by said controlling means will arrive at a specified position and an article arrival time immediately before articles will arrive at said specified position; start-indicating means for indicating a starting time; delay time setting means for setting a delay time between said starting time and a clamping time when said transverse sealers clamp said longitudinally sealed film; sealer controlling means for causing said transverse sealers to move from specified initial positions so as to reach said clamping position in said delay time; and memory means for storing a falling time taken by articles dropped by said article dropping means to reach said clamping position from a specified starting position; wherein said delay time is set shorter than said falling time such that said transverse sealers clamp said film before said dropped articles reach said clamping position.