Continuous vertical form-fill-seal packaging machine with a carriage that performs a constant movement

摘要

An improved stripping and sealing operation in a form, fill and seal packaging system is provided. Stepper motors (52, 52, 55) and servo motors (30, 40) are computer controlled including by a 3-axis coordinator operating the X and Y motion of the sealing jaws (20, 21), as well as the Y' motion of the film/tube feed. The Y motion is provided by oscillatory driving movement of the carriage (12) to move the stripper jaws (25, 26) and sealing jaws (20, 21) in a substantially constant modified sine wave profile. The Y' motion is variable and tracks the carriage (12) to precisely size and form the bag (B). Blousing is also provided by tube/carriage relative motion also induced by varying the film/tube feed. IMAGE