Automatic discharging device

The utility model discloses an automatic discharging device which can shorten the discharging time and improve the production efficiency. The automatic discharging device comprises a discharging cylinder, a feed port is formed in the upper end of the discharging cylinder, a discharge port is formed in the lower end of the discharging cylinder, a conical sliding block is arranged at the position of the discharge port, and the larger end of the sliding block is arranged downwards and blocks the discharge port. A limiting blocking shoulder used for preventing the sliding block from entering the discharging cylinder from the discharge port is arranged at the bottom of the sliding block, the smaller end of the sliding block is connected with a pull rod, a hanging ring is connected to the top end of the pull rod, and a locating piece is further arranged at the position, located between the hanging ring and the discharge port, in the discharging cylinder. The locating piece is connected with the discharging cylinder, a locating through hole used for preventing the hanging ring from penetrating through is formed in the locating piece and the pull rod penetrates through the locating through hole.