Method and apparatus for doffing full packaged bobbins in a fly frame
US4023338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1975 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Sep 29, 1995 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H9/046
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention is applicable for carrying out the doffing operation of several types of fly frames such as a fly frame provided with an upper rail having a plurality of flyers in suspended condition and a mechanism for driving these flyers therein, and a fly frame provided with a spindle rail and a bobbin rail disposed at a position above the spindle rail in such a condition that the bobbin rail can be displaced vertically during the building motion. According to the doffing method of the present invention, when it is required to carry out the doffing operation, the bobbins containing a full yarn package are relatively displaced to a position free from the corresponding flyers and the engagement of the bobbins with the corresponding bobbin driving mechanisms is released. Next the bobbins containing a full yarn package are carried toward a longitudinal end of the fly frame in a space above the arrangement of the bobbin driving mechanisms. In the preferable embodiment of the present invention, the carrying passage of the bobbin coincides with an alignment of the axial centers of the flyers arranged in the longitudinal direction of the fly frame. A chain conveyer is preferably used fo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.