Anti-winding device for polyester threads

The utility model relates to a polyester thread anti-winding device in the technical field of polyester production, the surface of a connecting plate is in threaded connection with a second threaded rod, the top of the second threaded rod is fixedly provided with a telescopic rod, the surface of one end of the telescopic rod is sleeved with a second spring, and the top of the telescopic rod is fixedly connected with a second connecting frame; a second threaded rod is rotated to drive a limiting shaft to move upwards, so that the top surface of the limiting shaft makes contact with the bottom surface of a winding shaft, polyester threads wound around the surface of the winding shaft can be gradually increased, the diameter of the winding shaft is increased, when the winding shaft makes rotary contact with the limiting shaft, the limiting shaft is extruded, and the limiting shaft extrudes a second spring; therefore, the surface of the limiting shaft and the surface of the winding shaft are always in a contact s