Automatic fruit size screening device

The utility model discloses an automatic fruit size screening device which comprises a sorting machine body and a sorting roller, and the sorting roller is arranged in an inner cavity of the sorting machine body. According to the fruit size sorting machine, limiting devices, limiting shells, stabilizing blocks, springs and limiting grooves are arranged and used in cooperation, so that the problem that an existing fruit size sorting machine is machine equipment used for classifying and sorting fruits according to the sizes is solved, and the fruits are grouped through the technologies such as a sensor, an optical system and a computer vision technology; generally, sorted fruits can directly fall into an inner cavity of a material collecting box through a flow guide box, due to the fact that the flow guide box is inclined, the rolling speed of the fruits in the flow guide box is high, the flow guide box has a certain height, impact force borne by the fruits falling into the inner cavity of the material collecti