Package making – Closing packages and filled receptacles – Package or receptacle having closure flap – e.g. – carton...
Patent
1993-07-21
1995-08-15
Culver, Horace M.
Package making
Closing packages and filled receptacles
Package or receptacle having closure flap, e.g., carton...
B65B 720, B65B 726
Patent
active
054408520
ABSTRACT:
A flap folder is formed by a pair of parallel rails which define a carton package there between. Each of the rails mounts for relative reciprocal motion a control rod on each of which is mounted a flap folding lever positioned to cooperate with a cam on its adjacent rail to move the lever into a flap folding extended position and return it to a retracted position when the bar is moved relative to the rail. A side flap folding plough is mounted on each of the rail at the downstream end thereof and is formed with a cam surface that cooperates with a cam mounted on its adjacent bar. After the lever has folded the rear flap each plough is moved from a retracted position to an extended position by the movement of the bar relative to the rail. Similarly, a stop mechanism is mounted on the rail and is movable to an extended position stopping movement of a carton into the passage by movement of the bar from its starting position and to a retracted position when the bar return to its initial position. Preferably, the conveyor for moving the carton through the folder is a chain drive wherein a pair of sprocket are adjacent one side of the machine on opposite sides of a line or projection thereof interconnecting the axis of two driven sprockets and wherein a chain wraps the sprockets in a manner to form the chain into a pair of internested U shapes.
REFERENCES:
patent: 3426506 (1969-02-01), Jernigan
patent: 4161138 (1979-07-01), Marchetti
patent: 4671046 (1987-06-01), Lewis et al.
patent: 4748794 (1988-06-01), Marchetti
Belcor Industries Inc.
Butler Rodney A.
Culver Horace M.
Rowley C. A.
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