What are the 3 key points of needle skipping in 5 thread overlock sewing machine？

3 key points of the needle skipping in 5 thread overlock sewing machine:

Key point 1:

Chain stitch marking time

When making knitted fabrics, the threading wheel should be adjusted so that the needle tip of the machine needle just passes through the chain stitch to bend the needle and thread, and the threading wheel just falls off the thread. If the thread is too tight, the fabric will wrinkle.

During adjustment, we can move the threading on both sides of the threading wheel to the operator as far as possible to increase the threading amount.

If not, we can also take the wire out of the five-wire small clamp to reduce the tension of the wire.

Key point 5:

Height of feed dog

When making knitted fabrics, the height of the feed dog of the 5 thread overlock sewing machine should be adjusted well. If it is too high, the fabric will not go, that is, the fabric will get stuck. Adjustment method: under the condition that the cloth feeding is not affected, we can lower the cloth feed dog as far as possible, so that the fabric is not easy to wrinkle.

Key point 3:

Presser foot spring

There is a spring in front of the presser foot of the 5 thread overlock sewing machine, which is fixed on the rod with the presser foot. The spring should be adjusted so that when the presser foot is lifted, the front of the presser foot is still pressed on the needle plate so that the front and rear of the presser foot are always in contact with the needle plate no matter when the presser foot is lowered or lifted, so that the chain stitch of the chain bending needle always comes out, which is not easy to cause thread jamming. When making woven fabric, the spring should be in this state as long as it is five threads, Otherwise, the thread will be stuck when the fabric starts sewing.