To suppress the occurrence of sewing defects and to improve the merchandise value of a sewing object by reducing the number of sewing threads applied between any two holes of a lower button.
The button sewing machine 100 is provided with an upper button holding part 2 and a lower button holding part 4 for holding an upper button A and the lower button B to be sewn to cloth M and a sewing operation control means (CPU 71). The sewing operation control means combines a first sewing operation control of driving the upper button holding part and the lower button holding part such that the sewing thread passed through the holes A1 and B1 of the upper button and the lower button is passed through the other holes A2 and B2 of the upper button and the lower button and a second sewing operation control of driving the upper button holding part and the lower button holding part such that the sewing thread passed through one hole of the upper button and the lower button is passed through the other hole of the upper button and one hole of the lower button and executes the sewing of the upper button and the lower button to the cloth.
SAKAMOTO SHINICHI
ODA HIROSHI
YOSHIDA FUMIHIKO
SHIINA TAKAYUKI
Yoshio Arafune