Sew between needle and sewing thread of sewing machine

The main reasons for disconnection are:

The tension of the line is too high, the line has fluff and the needle is overheated:

The right to pass through the wire of the wire over the suture;

Check that the pieces of the line are damaged or have sharp edges;

The tension of the future should not be too high;

Check that the needle series is suitable for the type of sewing machine used;

The needle should be installed in the needle bar hole at the top;

The short side of the groove or notch of the needle should be oriented towards the tip of the shuttle hook;

Check the formation of the shooting ring job;

Check the smoothness of the coil box surface;

Rotating needle

Needle in the seam by bending tension of the high arch and fracture:

The replaced needle has been bent or damaged, placed with a new needle;

Depending on the type of sewing machine, select the right needle;

Adjust the shuttle, forward between the teeth and the position ratio of the needle, for precision and coordination;

To ensure that the needle and pressure pin and needle plate enter the appropriate and uniform space;

Sewing the line meet at the intersection, reduce the sewing speed;

Select the needle with the needle to match the suture specifications;

Avoid factors related to the needle by high temperature;

To avoid excessive suture tension;

The sewing process should be careful not to cause dirt to hit the needle.

Jump needle

In the process of forming the stitches you can’t hook the needle’s thread, you can’t complete the entire stitch:

The needle series of the machine must be compatible with the type of sewing machine;

The needle should be installed on the needle bar in place;

The size of the needle should match the corresponding suture;

Check the loop trip formation work;

The needle in the needle bar was a torsional displacement;

Push the tip of the needle too far away;

The needle plate of the hole is too large, the material will be inserted;

The use of high-quality sutures;

Fragmentation of the tip of the shuttle hook;

Test of lubricant for sutures.