Causes and treatment methods of broken needles in GJ4 and GE2108 sewing machines

It is common that the needle is broken due to the incorrect position of the clamp foot and the machine needle is caused by the deviation of the buttonhole. Adjust the position of the clamp foot reasonably, and the needle should be aligned with the center of the buttonhole (adjust the needle left and right, and adjust the needle across the front and back); the center distance of the buttonhole is not the same. etc., the shape is special, such as: plum blossom shape, etc., replace the standard button (the hole spacing is the same size), install the button according to the shape, button hole, and fix the direction; , Use a large square hole plate when nailing big buttons, use a small square hole plate when nailing small buttons (such as shirt buttons); the needle guard touches the needle, and adjust the position of the needle guard (for example, the needle should be close to the needle guard, when the needle is swung left and right , the gap should be consistent); there is a collision when the crochet needle is in contact with the machine needle, adjust the relative position of the crochet needle and the machine needle, the crochet needle tip should be close to the machine needle when crocheting the thread, but not rub, check whether the crochet needle shaft moves, and adjust it if there is ; The worm is positioned and moved, and the worm is re-adjusted. Before the needle will pierce the button hole, the horizontal (swing needle) and vertical (cross needle) movements must be stopped.