Air cooling device for PVD coating processing

The utility model belongs to the technical field of air cooling devices, particularly relates to an air cooling device for PVD (physical vapor deposition) coating processing, and provides the following scheme aiming at the problems of single structure, non-uniform cooling on PVD coating parts and poor cooling effect of the existing air cooling device: the air cooling device comprises a shell, a motor is fixedly arranged on the inner wall of the bottom of the shell, and the motor is arranged on the inner wall of the bottom of the shell; a rotating shaft is fixedly connected to an output shaft of the motor, a driving gear and a cam are fixedly mounted on the outer side of the rotating shaft, a supporting column is rotatably mounted on the inner wall of the bottom of the shell, a driven gear fixedly sleeves the outer side of the supporting column, the driving gear is meshed with the driven gear, and a placing disc is fixedly mounted at the top end of the supporting column; an air cooler is fixedly installed on t