YARN COVERING APPARATUS AND METHOD

摘要

An apparatus (10) for covering a core yarn (14) with a cover yarn (12) includes a mounting assembly (22) for mounting a package (16) of core yarn such that the core yarn package is fixed against rotation and means for guiding a cover yarn (12) along a path which on rotation about an axis defines an envelope which surrounds the core yarn package (16). The core yarn (14) may be drawn off along the axis of rotation of the cover yarn path so that when the core yarn (14) intercepts the envelope it is covered by the cover yarn (12). The apparatus includes an upstream guide (50) which defines an upstream end of the cover yarn path and a downstream guide member (52) located on an opposite side of the core yarn package (16) from the upstream guide (50), the downstream guide member (52) extending outwardly from the axis of rotation of the cover yarn path and being rotatable about that axis and the cover yarn path extending from the upstream guide (50) to a radially outer part of the downstream guide member (52) and then inwardly to the core yarn (14). The downstream guide member (52) is elongate. The apparatus may include means for adjusting the position of the upstream guide (50) independent upon the speed of rotation of the downstream guide member (52).