Taking the standard GK3 1030 double-needle three-thread sewing machine as an example, this paper briefly analyzes the fault treatment of double-needle three-thread sewing machine when it jumps up and down. For the double-needle three-thread flat sewing machine, it is often easy to jump needles when sewing on the upper and lower slopes.
GK3 1030 Double-needle Three-thread Flat Sewing Machine
It is easy for you to jump needles when you go up and down the slope, which is caused by the different thickness of sewing materials. In this case, the author suggests taking different countermeasures according to the severity of needle jumping.
The light degree of needle jumping is solved by reducing the sewing speed, and the heavy degree needs to be replaced with a large needle. According to the situation of needle jumping, measures such as advancing or delaying the hook time of looper and lowering or raising the needle bar are taken to solve it.
In addition, we must first adjust the gap between the crochet needle and the machine needle, and try to make the crochet needle close to the machine needle, but don't touch the machine needle.
Secondly, adjust the gap between the crochet and the straight needle when hooking and crocheting, even if the gap between the two needles is basically the same, don't have a big side and a small side.
Finally, in debugging, measures such as adjusting suture tension and intentionally changing the installation direction of machine needles should be comprehensively used to achieve the best adjustment effect.