1.Rest Position or Run in
4.Cast off or Knock over
Figure (a–e) shows the knitting action of a latch needle and holding-down sinker during the production of a course of plain fabric.
(a)Tucking in the hook or rest position: The sinker is forward, holding down the old loop whilst the knitting needle rises from the rest position.
(b) Clearing: The needle has been raised to its highest position clearing the old loop from its latch.
(c) Yarn feeding: The sinker is partially withdrawn allowing the feeder to present its yarn to the descending needle hook and also freeing the old loop so that it can slide up the needle stem and under the open latch spoon.
(d) Knock-over: The sinker is fully withdrawn whilst the needle descends to knockover its old loop on the sinker belly.
(e) Holding-down: The sinker moves forward to hold down the new loop in its throat whilst the needle rises under the influence of the upthrow cam to the rest position where the head of the open hook just protrudes above the sinker belly.
►Compound Needle consists of two separately controlled parts; these are- the open hook and the sliding closing element (tongue, latch, piston, and plunger).
►The two parts rise and fall as a single unit but at the top of the rise, the hook moves faster to open the hooks and at the start of the fall the hook descends faster to close the hook.
►It is easier to drive the hooks and tongues collectively from two separate bars as in warp knitting; than to move each hook and tongue individually as in weft knitting.
LATCH NEEDLE WORKING DEMONSTRATION
COPYRIGHT© 2021 ALL RIGHT RESERVED BY LONGTEX
TECHNICAL SUPPORT BY LONGTEX