Tufting machine yarn feed drive - has number of integral geared coupling units which can be removed for replacement

摘要

Each yarn feed unit along the drive shafts has a drive input and a feed roller zone, each unit having a gearing to transmit the rotation of the drive shafts to the drive input zone, with a number of selective rotary sections to carry the rotary drive to the feed rollers of the selected unit, the couplings for each unit being easily exchanged. The replacement of the unit couplings, as integral units, simplifies maintenance and repair, reducing the idle times of the tufting machine, while ensuring that a positive yarn feed is provided for the needles.