Control of heald frame movement for changing shuttle clearance through a weaving shed
US5740840A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Jun 10, 2016 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03C13/025
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A weaving machine includes a plurality of individually adjustable heald frames for forming an upper shed and lower shed by acting on warp threads. The heald frames are coordinately controllable by a control unit. At least one shuttle transports weft threads through the upper shed and lower shed. At least one shuttle path arranged under the warp threads forming the lower shed supports the at least one shuttle. The control unit controls movement of the heald frames effected by a position adjustable unit to bring about different upwardly and downwardly directed forces on the warp threads, depending upon a desired weaving design. The control unit adapts the forces applied to the warp threads of the lower shed to the shuttle path so as to provide the at least one shuttle with clearance through the upper shed and the lower shed that is substantially unaffected by the warp threads in spite of the respective force applied to the warp threads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.