Drive device for packaging machine
US6941985B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2003 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Dec 23, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B21/087
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A drive device comprises an air cylinder 123 for causing an operating member for a packaging operation to perform a reciprocating motion, a sensor 132 for detecting the cycle velocity or time of the air cylinder 123, a control valve 222 for controlling the pressure or flow rate of the fluid to be supplied to the air cylinder 123, and an a sequencer 201 for setting a reference value SV corresponding to the cycle velocity or time of the air cylinder 123, receiving a value PV detected by the sensor 132 as an input, calculating a valve opening degree so as to reduce the deviation of the detected value PV from the reference value SV to zero and setting the opening degree of the control valve 222 based on the calculated valve opening degree.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.