B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
B65B 43/42 (2006.01) B65B 43/12 (2006.01) B65B 51/30 (2006.01) B65B 57/02 (2006.01) B65B 57/04 (2006.01)
Patent
CA 2104827
A packaging machine and method for simultaneously loading, sealing and severing bags. A first stepper motor, having an output, is coupled to a nip roll assembly. After a bag is loaded, a sealing mechanism is actuated to seal the loaded bag or bags. A sensor monitors movement in a pressure bar and ter- minates the sealing cycle if a jam is detected before the pressure bar engages a seal bar having a heater for sealing the bag. The stepper motor is used to retract bags and sever a leadmost bag that is clamped between the seal bar by the pressure bar. A second stepper motor withdraws the web from a supply at a controlled rate to maintain tension in the web between the first and second stepper motors. A dancer roll assembly includes an orientation sensor for controlling the second stepper motor to speed up, slow down or stop.
Automated Packaging Systems Inc.
Ridout & Maybee Llp
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