Patent ID: 7218988
Filing Date: 2007-05-15
Classification: D04B

Abstract:
1. A yarn feeding apparatus, of a weft knitting machine, for feeding a knitting yarn to a knitting fabric via a carrier that is brought by a carriage in the weft knitting machine in which a knitting fabric is knitted while moving the carriage back and forth in a longitudinal direction of a needle bed, comprising: slack reducing means that is provided on a feeding path of the knitting yarn, whose actuation state can be controlled, and that can eliminate slack of the knitting yarn in an actuated state by pulling in the knitting yarn within a predetermined range; excess amount calculating means for calculating an excess amount of the knitting yarn that is generated in the knitting yarn on the feeding path when a movement direction of the carriage is reversed at a knitting end of the knitting fabric, based on a signal indicating knitting data of the knitting fabric with respect to a course that is to be knitted by moving the carriage and a signal for controlling the carriage, in accordance with a distance of the path on which the knitting yarn is fed to the carrier, a distance from the carrier to the knitting fabric, and a control state of the carriage; and control means for performing control such that slack of the knitting yarn is absorbed by actuating the slack reducing means in accordance with the excess amount that is calculated by the excess amount calculating means.