Positioning and pre-printing device for embroidery of polyester embroidery cloth

The utility model relates to the technical field of polyester embroidery cloth printing treatment, in particular to a positioning pre-printing device for embroidery of polyester embroidery cloth, which comprises a supporting bottom frame, a steering roller and a transmission belt are respectively and movably mounted on the front side and the rear side of the inside of the supporting bottom frame, and processing cloth covers the upper position of the transmission belt. By means of the driving belt, the movable frame, the driving machine box, the air gathering cover, the guide pipe, the lower air hole and the upper air hole, after an exhaust fan installed in the driving machine box is rapidly started, the exhaust fan can be rapidly started through the air gathering cover, the guide pipe, the lower air hole and the upper air hole, and the exhaust fan can be rapidly started through the air gathering cover, the guide pipe, the lower air hole and the upper air hole. The cloth conveying device has a certain downward