Electric sewing machine is a special equipment that uses one or more sewing machine threads to form a stitch or various stitches on the sewing material, so that one or two layers of sewing materials overlap or sew up. In the 20th century, the electric sewing machine was an indispensable and common tool in every household, and people were embarrassed to leave the house without it. In the rapid development of industrial production today, we released automatic electric sewing machine and intelligent electric sewing machine these if in the process of use, how to repair the sewing machine leakage? To help friends to solve this kind of problem, the following is for you to explain the sewing machine leakage repair tips, I hope to help have these problems in this aspect of the friends.

1. How to repair the leaking thread of the sewing machine? Sewing machine leakage generally has the following kinds of possibilities
1) If the needle is bent or the needle is installed backwards, remove the new needle or install the needle correctly
2) The fault caused by excessive bearing force or no wire spring can be solved by relieving pressure of wire spring and refit wire spring
3) The failure caused by burr on the tip of the rotary shuttle can be slowly ground off with water abrasive paper
4) The fault caused by the excessive position error of the spinning shuttle and needle can be solved by adjusting the position of the spinning shuttle and needle.

The operation steps are as follows:
A) Adjust the upper and lower positions of the needle and the spinning shuttle. Rotate the needle to the bottom at first, and then slowly rotate it again until the needle slowly moves up. At this time, the tip of the spinning shuttle should move to the middle position of the needle plane design drawing.
B) The position between the needle and the bobbin can be adjusted by carrying out the adjustment of A. The operation process is as follows: Adjust the interval between the bobbin and the needle to 0~0 mm, and then tighten the fixed anchor screw of the bobbin.

Ii. How to repair the leaking thread of the sewing machine? Old sewing machines leak wires
1, fault characteristics: lead to the bottom line of life.
Product reason: the bobbin is too short, the bobbin is clamped in the bobbin door, the needle is too high, and the bobbin cannot hook the loop.
Solution: Lengthen the shuttle line, check whether the bottom line is stuck, and eliminate it. Screw loose needle rod rotation shaft, lower the needle rod, tighten the screw again.

2, fault characteristics: needle rod shaking.
Product reason: screw hole, screw damage, screw connection screw loose, screw deviation.
Treatment method: replace the needle rod sleeve, or matching a new needle rod, needle again; And tighten the fixed screw.

3, fault characteristics: several needles jump a needle work.
Product reason: damaged bobbin, too blunt bobbin tip, sewing machine needle too high or too low.
Treatment method: change the swing shuttle, adjust the height of needle rod or machine needle height, needle again.

4, fault characteristics: continuous leakage line should not sew a needle.
Product reason: the needle quality is poor or the needle bending can not all normal lead to wire ring. The sewing machine needle is too high, the hook does not line the ring, and the sewing material operation suture machine needle is not suitable for each other. Permanent use of swing shuttle, swing bed and other parts seriously damaged or broken.
Solution: Disassemble qualified needle or cold drawing needle. Adjust needle bar or sewing machine needle height. In general, it can be disassembled and repaired when necessary.

5, fault characteristics: thin seam does not leak line, seam thickness leakage line.
Product reason: insufficient pressure of press foot, sewing machine needle is too fine, hook mechanism and other parts are seriously damaged.
Treatment method: adjust the pressure of the press foot, change the machine needle, remove the parts and repair.