Method for preventing pattern windings in random wound yarn packages
US6003806A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Jul 15, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a simplified method for preventing pattern windings in a winding process for producing random wound yarn packages at a winding station of a winding machine, either the circumferential speed of a yarn package or the traversing speed of a yarn guide is selected as a command variable and the other as a secondary variable. Then, in the winding process the winding roller of the winding station is accelerated and decelerated and the yarn guide is accelerated and decelerated so that each variable varies between respective predetermined maximum and minimum values. Each time the command variable reaches a predetermined maximum or minimum value, a signal is generated and: if a previous change in the secondary variable immediately prior to the generating of the signal was an increase in the secondary variable, then the secondary variable is decreased in response to the signal; and if a previous change in the secondary variable immediately prior to the generating of the signal was a decrease in the secondary variable, then the secondary variable is increased. Furthermore, if during the winding process the secondary variable equals a predetermined value, then the secondary variable is mainta…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.