There are a total of six stations on the rotary table, with six positioning fixtures and equal divisions according to the circumference of the position. At the first turn plate, the vibrating plate and the linear vibrator arrange the heat sink into the fixture in two sequences for positioning; The second turn plate is in dispensing; In the third turn plate, two pairs of vibration plate and linear vibrator combination are respectively arranged into the respective triode fixture and the third stations of heat sink fitting; The fourth turn plate is for automatic screw locking. The screw locking mechanism locks the heat sink and the transistor. In the fifth turn plate, the defective products will be eliminated; The sixth turn plate output the radiator. The radiator, screws taking and products placed in order can be completed by the machine independently.