Sewing machine needles break jump solve

Continuity Jumper
1, the bottom line is too short to stay thread, wire collar live bottom; remove the shuttle grams, pulled the bottom line is about 10 cm;
2, the needle after long-term use, or maintenance, improper maintenance, spare parts position changes, reach sewing requirements; qualified replacement parts as required, adjust the position of the needle bar height, the needle and the hook tip spacing, gap;
3, the upper thread that needle thermal influence becomes hot; fiber line should take the needle cold indeed (silicone oil);
4, sewing special material, the coil can not properly formed; sewing speed should slow down and increase the surface smoothness of the line;
5, equipped with automatic trimming machine, thread the upper thread too short after trimming prolapse needle eye of a needle; adjust trimming cam with time;
6, the presser foot groove too wide, when acupuncture cloth quit, sewing material movement and affect coil, the greatest impact of this situation, and so when thin material; according to sewing materials, the presser foot move left, move right, up or wide groove solder fill reopen narrow groove, and polished or broken replace qualified presser foot is broken during sewing machine, one of the most common faults, for sewing, the disconnection phenomenon is generally divided into for the section line and break the bottom line.
Section line
1, there is an acute needle or needle pinhole edge groove hair; use or replace the needle after polishing pinhole;
2. Thread each hole portions nap surface line, the suture disruption in the movement; available sand paper or wire coated with a polishing paste polish pull light.