The application provides an electric driving stitch mechanism and method of a
sewing machine, which is applied to the
sewing machine and comprises an upper shaft motor, an upper shaft, a needle bar, a needle bar
crank, a needle bar lifting connecting
assembly, a needle, a lower shaft motor, a lower shaft, a curved needle and a curved needle driving
assembly. The upper shaft motor is arranged on a frame of the
sewing machine, and the output end of the upper shaft motor is connected with the upper shaft. The needle bar
crank is arranged at the end of the upper shaft far from the upper shaft motor. In the application, the vertical movement of the needle is driven by the upper shaft motor, and the horizontal movement of the curved needle is driven by the lower shaft motor. When the thread is hooked, the curved needle first passes through the short needle thread loop, and then the upper shaft motor reduces the lifting speed of the needle, so that the needle can normally hook the thread even if the height of the needle is increased, the needle can be higher than that of a conventional
machine when it is lowered to the lowest point, the sewing material can be prevented from being damaged by the needle
handle, the needle can be higher than that of a conventional
machine when it is lifted to the highest point, and thicker sewing material can be sewn.