Doffing and donning apparatus
US4899530A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 1, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Sep 1, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/31
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A yarn spinning, twisting or doubling machine having bobbin doffing and donning apparatus for the spindles of the machine, the apparatus comprising bobbin conveying means extending along and above a row of spindles, a series of bobbin grippers spaced at the same pitch as the spindles, each gripper being mounted for vertical movement between its respective spindle and the conveyor, each gripper being designed to hold or grip a bobbin at a point beyond one end of a package wound on the bobbin so that the grippers can lift the wound bobbin from its spindle for engagement by means on the conveyor and then release the bobbin for subsequent removal, or grip an empty bobbin on the conveyor and move it to its respective spindle and control means operable to move the conveyor after it has received the full doffed bobbins and to bring empty bobbins into line with the spindles so that the grippers can place empty bobbins on the spindles. This equipment enables the bobbins to be accurately positioned on the spindles and removed from the spindles without the problems which arise from the use of inflatable sleeves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.