Braid preshrinking device

The utility model discloses a braid preshrinking device which comprises a square tube, the width of the square tube is 8-16 cm, a plurality of carrier rollers which are evenly distributed and used for lifting braids are installed in the square tube, a feeding mechanism used for feeding the braids into the square tube is installed on the front portion of the square tube, and a discharging mechanism used for discharging the braids out of the square tube is installed on the rear portion of the square tube. A steam nozzle is installed at the bottom of the square pipe and located between any two carrier rollers, a circular exhaust hole is formed in the middle of the top of the square pipe, and an exhaust mechanism capable of adjusting the exhaust amount is installed in the middle of the top of the square pipe and covers the exhaust hole. The ribbon pre-shrinking device has the beneficial effects that the feeding mechanism, the carrier roller and the discharging mechanism are matched to enable a ribbon to pass thro