For some types of machines, the timing of tensioning needles and needles can be adjusted.
The swing amplitude of the stretched needle must be ensured: when the stretched needle swings to the rightmost limit position, it can hook the stretched needle thread, and when the stretched needle swings to the leftmost position, the distance from the tip of the stretched needle to the left needle is 4.5-5.5mm.
The installation height of the stretched needle should be as high as possible, but the gap between the top of the stretched needle and the bottom of the stretched needle thread board should enable the stretched needle thread to pass smoothly.
The installation height of the tensioning needle thread board should be such that when the needle rises to the highest point, the tensioning thread smoothly slides under the right needle to the back of the right needle point (away from the operator side) so that the right needle is very Pin the stretched needle thread easily.
When the tip of the stretched needle swings to the front of the left needle, the gap between the left machine needle and the tip of the stretched needle should be 0.5-0.8mm.
