Bagging control apparatus and method
US5570568A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | May 12, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B57/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
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 terminates 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.