Oliff PLC
Sewing machine
A sewing machine includes a thread tension mechanism, a thread feed sensor, a sewing portion, a processor, and a memory. By executing instructions stored in the memory, the processor causes a first tension to act on an upper thread by the thread tension mechanism to be in a first state, in a state in which a sewing is stopped. The processor causes a second tension that is smaller than the first tension to act on the upper thread, by causing the thread tension mechanism to be in a second state, when the movement of the upper thread is detected by the thread feed sensor. The processor causes a third tension that is equal to or greater than the second tension to act on the upper thread by causing the thread tension mechanism to be in a third state, in a state in which the sewing is performed.
BROTHER KOGYO KABUSHIKI KAISHA
D
D05B
inventional
Hirokazu Yasunori
Hirose Suzuki