1,When processing flat thin fabrics, occasionally 1~2 stitches will appear.

2,Do not jump the needle when sewing on the flat fabric. As long as the thick material is processed, the needle will jump when going uphill, the needle will jump when going downhill, and there will be a large area jumper when a thick material is entered.

When the pumping machine works on a flat fabric, the reasons for the occasional jumper are mainly the following:

(1)The embroidery sewing machine is pulled from fast to slow to maintain a constant speed. If the needle is suddenly decelerated, or when the needle is suddenly turned down quickly, the needle jumping phenomenon occurs because the gap between the gear and the gear under the hook is too large. Just grasp the hook and move forward and backward, you can feel the hook has a large back and forth swing distance. When checking, the hook is firmly fixed on the lower shaft, only the gap between the teeth of the two gears and the teeth Large, you need to loosen the gear screw and push the gear up or down (see if the gear is left or right). Because there is a Mo-taper on the tooth of the gear, you only need to squeeze it tightly, but it can't be squeezed too tightly, otherwise the gear will make a squeaking noise, as long as the hook does not swing, then adjust the cooperation between the hook and the needle. can.

(2) When working on the flat fabric, the thread is suddenly tightened and the amount of thread is reduced, so that the loop on the needle is reduced, and the hook tip is jumped due to the hook loop. This phenomenon, there are not many on the right, mostly on the left. This is because the left side uses the left-handed line. Usually, the factory uses a uniform right-handed line. Therefore, the direction of the take-up rotation is opposite to the direction of the hook movement. Once the amount of the line is reduced or the rotation of the hook is made If the loop is not well formed, the hook tip will not catch the loop and produce a jumper of 1~2 stitches.

Maintenance method: only need to match the gap between the hook tip and the needle to zero, and then adjust the hook line of the hook and the needle to make the hook line slightly faster than half a shot. At the same time, the suture is boiled for a few minutes ( The line after the boiled water is very loose, and there is no longer the phenomenon of tightening the suture when using it.

(3) The normal clearance of the hook and needle hook line is zero, and occasionally 1~2 stitches appear on the left side. This is because the right side uses the right-handed line, the right-handed line is easy to rotate with the rotating hook, the wire loop is formed opposite to the direction of the hook movement, but the line is compared with the roll, causing the needle to form a good wire loop to move forward. , or the wire loop is rolled up, so that the wire loop is reduced, the hook tip cannot be hooked to the wire loop or the hook tip is wiped from the edge of the wire loop, and the jump stitch is generated without hooking the wire loop.

Maintenance method: The line that has been soaked in boiling water should be used to advance the hook line of the left hook a little earlier. That is to say, when the loop is formed more than half, the hook line is entered. When the loop is formed, the hook tip has crossed the needle. When the wire loop floats forward, the hook tip is also moving forward, so the wire loop floats again, and it can only be inside the hook tip, and the problem is solved.