Patent ID: 6421987
Filing Date: 2002-07-23
Classification: B29C,B29L,B65B

Abstract:
A latitudinal seal mechanism for use in a bag packaging mechanism that fills articles to be packaged while sealing a tubular packaging material in longitudinal and latitudinal directions, said latitudinal sealing mechanism comprising:a shaft support portion supported in the bag packaging mechanism; a rotational shaft supported on said shaft support portion such that said rotational shaft is selectively movable in a direction perpendicular to an axial length of said rotational shaft; a fixed cam supported in the bag packaging mechanism; a seal portion supported on said rotational shaft, said seal portion being adapted to be heated and move around a locus defined by an outer peripheral surface of said fixed cam about said rotational shaft, said seal portion also being adapted for selective radial movement with respect to said locus such that said seal portion abuts on and moves away from the tubular packaging material; a cam follower partially supporting said seal portion on said rotational shaft, said cam follower being adapted to move along an outer periphery of said fixed cam thereby guiding said seal portion about said locus; and a coupling member for coupling said cam follower to said rotational shaft.