1 clothing is moving irregularly

In the process of sewing a sewing material using a sewing machine, there are sometimes irregularities in the speed of movement of the cloth, and the irregularity of the length of the stitching. The cloth material moves forward by the cooperation of the feed dog and the presser foot. Therefore, when the above-mentioned irregular movement of the cloth material occurs, it can be concluded that the tooth and the presser foot are malfunctioning or the pressure is improperly adjusted. For example, the presser foot pressure is too small. If the pressure is not tight, it will cause irregular movement. At this time, just turn the adjusting screw downward to press the cloth. The presser foot is too high to press the fabric, and it will cause the fabric to move freely or not move at all. When adjusting, first lift the presser wrench, loosen the guide screw, and then press the presser foot from top to bottom. After the distance between the presser foot and the needle plate is adjusted to a height of 7-8 mm, the screw is tightened and then used.

Another reason is that the teeth are loosened and the teeth are shaken left and right during operation, so that the cloth cannot be moved forward regularly. The treatment is to remove the needle plate. Tighten the two teeth screws. After tightening, install the needle plate and check whether the edges of the teeth are rubbed against the edge of the needle plate groove. If there is friction, it will cause noise and weight. At this time, only remove the needle plate and loosen the tooth screw. Adjust the position of the tooth to the middle of the needle plate slot, tighten the tooth screw, and then install the needle plate.

2 clothing does not go forward

The movement of the cloth is transmitted by the teeth. When the clothing does not move at all, only find fault on the teeth. If the tooth position is too low, the fabric cannot move forward. When adjusting, first raise the nose, loosen the lifting crank screw, and then gently lift the bracket with a screwdriver to make the feeding direction. The needle plate is exposed to 0.8-1 mm. It is the standard size of the teeth. As long as it is adjusted to this position, the fabric can move normally. Finally tighten the screws. When screwing the screw, also pull the nose.