Analysis of the causes of thread breakage in computerized quilting machines

With the rapid development of the quilting industry, the thread take-up, fabric insertion, and hook-up mechanisms of quilting machines have gradually become computer-controlled. Intelligent quilting equipment even incorporates multiple drive mechanisms. For example, in a computerized shuttle quilting machine, the hook-up mechanism is driven by one motor, while the thread take-up mechanism and fabric insertion mechanism are driven by another.

These two mechanisms in a computerized quilting machine are generally managed synchronously and in coordination by two different drive motors. After the fabric insertion and thread take-up mechanisms form a central thread loop, the hook-up mechanism completes the large thread loop. When the shuttle passes through, the thread take-up mechanism can quickly retrieve the thread, and the thread loop in the hook-up mechanism is smoothly retrieved to the bottom of the fabric, thus completing the quilting process. Thread breakage is a common malfunction in quilting machines. So how do you determine the cause of thread breakage in a computerized quilting machine?

If the broken thread end is horsehair-shaped, it may be due to burrs on the thread hook, the thread clamp being too tight, or the thread take-up spring taking up too much thread. If the broken thread is cut in the shape of a slit, it may be due to a change in the mechanical structure of the machine, improper disassembly or assembly, damage to parts from collisions with broken needles or other workpieces, or burrs on the edges of parts. If one or two strands of yarn break on a single thread, it may be due to the presser foot being too high.

If the thread guide hook has burrs, it can be smoothed with fine sandpaper. If the presser foot is too high, it should be adjusted according to the thickness of the fabric; the distance between the presser foot and the fabric surface should not exceed 0.5 mm. If the needle is bent or broken, it should be replaced immediately. If the thread take-up spring is taking up too much thread, the take-up amount can be adjusted to about 0.2 cm, with a tension of 1.2-2 Newtons. If the machine has a thread breakage detection device, it can be adjusted to about 0.5 cm, with a tension of 1.2-2 Newtons.