- Rest position. The tip of the needle hook sits level with the top edge of the trick verge. The loop formed at the previous feeder remains inside the closed hook. Holding-down sinkers (or web holders) advance between the needles to secure the sinker loops, stopping this existing loop from lifting when the needle rises.
- Latch opening. As the needle butt travels upward along the incline of the clearing cam, the old loop — held down by the sinker — slides into the hook and pushes against the latch, rotating it open.
- Clearing height. When the needle reaches the cam’s peak, the old loop slips off the hook and latch spoon onto the needle stem. At this stage, the feeder guide plate acts as a guard to stop the latch from closing the empty hook.
- Yarn feeding and latch closing. The needle begins its descent along the stitch cam. Its latch moves below the verge, while the old loop slides underneath the latch. New yarn is then delivered through an aperture in the feeder guide to the descending needle hook; at this moment, there is no risk of the yarn feeding beneath the latch. The old loop presses against the underside of the latch, forcing the latch to close over the hook.
- Knocking-over and loop length formation. As the needle head descends below the top of the trick, the old loop slides off the needle, and the new loop is pulled through it. Further downward movement of the needle forms the loop length, which is roughly twice the distance the needle head travels below the surface of the sinker or trick plate that supports the sinker loop. This distance is controlled by the adjustable depth setting of the stitch cam.
Angang Metal Products
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The knitting action of the latch needle
Time:2023-04-03