Method and apparatus for controlling converting rewinder lines
US6738684B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2002 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Oct 28, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/177
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of controlling a converting line having a rewinder, accumulator, and downstream equipment includes: providing upper and lower target limits for the accumulator level; determining the slowest maximum speed of the downstream equipment; determining the fastest minimum speed of the downstream equipment; monitoring the speed of the rewinder and the actual level of the accumulator; generating a master speed reference value to control the downstream equipment which: (i) corresponds to said slowest maximum speed of the downstream equipment if the actual accumulator level is greater than the upper target limit; or (ii) corresponds to the fastest minimum speed of the downstream equipment if the actual accumulator level is less than the lower target limit; or (iii) is based on the actual production speed of the rewinder if the actual accumulator level is less than the upper target limit and greater than the lower target limit for the accumulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.