Polyester filament yarn winding tension adjusting device

The utility model relates to the technical field of tension adjustment, and discloses a polyester filament yarn winding tension adjusting device which comprises a workbench, a motor is fixedly connected to the side wall of the workbench, a rotating shaft is rotationally connected to the interior of the workbench through a rolling bearing, and an output shaft of the motor extends into the workbench to be fixedly connected with the rotating shaft. The shaft wall, located on the outer side of the workbench, of the rotating shaft is fixedly sleeved with a reel, a hub of the reel is wound with polyester yarn, the side wall of the workbench is fixedly connected with a sleeve, the inner wall of the sleeve is fixedly connected with a telescopic rod, and the outer side of the telescopic rod is provided with a first spring. The upper end face of the first spring is fixedly connected to the inner wall of the sleeve. According to the filament winding device, winding tension can be adjusted in real time according to filam