Rotary feeding device

The invention discloses a rotary feeding device. The rotary feeding device comprises a bottom plate, a lifting mechanism, a transmission shaft, a driven gear and a material suction arm, wherein the lifting mechanism is arranged on the bottom plate; the lifting mechanism comprises a linear driving part, a sliding block and at least one guide column; the linear driving part drives the sliding block to move up and down along the guide columns; the transmission shaft is rotationally connected to the sliding block; the driven gear is mounted on the transmission shaft; two limiting plane blocks are arranged on the peripheral tooth surface of the driven gear; one of the guide columns is provided with a rack section and two plane sections which are arranged one above the other; the two plane sections are located on the upper side and the lower side of the rack section respectively; the rack section is used for being meshed with the driven gear; the plane sections are used for abutting against the limiting plane block