In China, stepping on a sewing machine does not mean going to jail, but there are sewing machine skills training in prison, and you can really learn labor skills in prison. But it is still rare to really step on the sewing machine again.

Before, a prison policeman asked the recidivist why he came in and said he regretted not learning to step on the sewing machine last time. Otherwise, he can find a factory and earn ten thousand yuan a month. After being released from prison, several people jointly founded a clothing factory and an electronics factory. There is training in sewing machines in prison, but stepping on sewing machines does not mean going to jail.

The origin of sewing machine

Sewing machines in prisons are no different from those used in daily life. /kloc-introduced the first sewing machine from America in 0/890, and produced the first household sewing machine and 44- 13 industrial sewing machine in Shanghai in 0/928. In addition to some high-end machines dominated by Japan and Germany, the production and sales of low-end sewing machines have already ranked first in the world.

With the application of servo motor, stepping motor, pneumatic and numerical control technology in sewing machine, it is like the second sewing machine revolution. The functions of variable speed control, feeding control, automatic thread cutting, automatic back sewing and automatic presser foot lifting are realized. The mechanical structure tends to be simple and the function tends to be intelligent.