Pay-off device of sewing machine

The utility model discloses a pay-off device of a sewing machine. The sewing machine mainly comprises a sewing machine frame and a pay-off device unit, the sewing machine frame is composed of a machine shell and a machine base. The pay-off device unit comprises a wire clamping device, a wire clamping device base, a pay-off base, a pay-off plate and an air cylinder. The sewing machine is characterized in that the sewing machine frame is composed of a machine base and a machine shell connected to the upper portion of the machine base, the pay-off base and the yarn trapper base are fixed to the machine shell together, the pay-off plate is installed on the pay-off base in the mode of sliding in the left-right direction, the air cylinder is mainly composed of a cylinder body and a piston rod, the cylinder body is arranged in front of the machine shell, according to the pay-off device of the sewing machine, the structure of the pay-off device of the sewing machine is simple and compact, andthe cost can be reduced.