Method and apparatus for avoiding ribbon windings
US5735473A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1997 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | May 30, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for avoiding ribbon windings in the winding of a cross-wound bobbin or cheese includes driving the cheese with a drive drum having reversing thread grooves for yarn guidance. A circumferential speed of the drive drum is continuously varied. The cheese is accelerated with the drive drum so that the cheese follows a course of motion of the drive drum with slip. A rotary speed of a drive motor is monitored with a winding station computer. The drive drum is driven with the motor acting as a moment adjuster in terms of control technology. A command value specification of a current is fed to a current regulator through the winding station computer for accelerating the drive drum with a constant preselectable moment and for braking the drive drum with another constant preselectable moment, for generating the slip between the cheese and the drive drum being varied for preventing a match in a rotary speed ratio between the drive drum and the cheese that causes ribbon windings. An apparatus for winding cross-wound bobbins or cheeses includes a drive drum acting as a drive mechanism for cheeses and having reversing thread grooves for yarn guidance and for laying a yarn. A drive motor…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.