Patterning unit of warp knitting machine and control method thereof
US5775134A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1996 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Nov 6, 2016 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04B27/26
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a patterning unit of a warp knitting machine in which a stator of a linear pulse motor is assembled in a holding member and a plurality of moving elements are provided at arbitrary intervals on the same holding member with part of the moving element being constructed as a guide point. The construction allows a thin linear pulse motor to be realized, erroneous operation such as step-out to be prevented in positioning control and the positioning to be carried out stably regardless of power failure or external noise. To that end, poles of the moving element are disposed so as to face poles on both sides of the stator. Moving element driving coils of the poles of the moving elements, NS directions of two field magnets and teeth of the poles of the stator are set so that a magnetic path of the field magnets runs in the same direction. A control method increases reliability of accuracy of positioning of the moving element and eliminates erroneous operation such as step-out by providing a position sensor in connection with the poles and by controlling the exciting condition by a set of parameters. Signal cables connected to the moving elements are removed to…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.