Device for curling polyester filament yarn

The utility model relates to the technical field of textile equipment, and discloses a polyester filament curling device which comprises a main body shell internally provided with processing equipment, and a take-up roller is connected in the main body shell through a fixing mechanism; the fixing mechanism comprises two supporting plates which are symmetrically connected to the inner shell top of the main body shell, a supporting rod is fixedly connected between the two supporting plates, the rod wall of the supporting rod is symmetrically sleeved with supporting rings, supporting blocks are fixedly connected to the outer ring walls of the lower ends of the supporting rings, and transmission rods are hinged to the outer ring walls of the upper ends of the supporting rings; the other ends of the two transmission rods are jointly hinged to a bearing, a threaded rod is fixedly connected to the inner ring wall of the bearing, a threaded hole is formed in the position, corresponding to the threaded rod, of the top