Automatic bag neatening machine

The invention relates to an automatic bag neatening machine. The problem that after an existing three-dimensional bag molding machine conducts machining, material collecting is complex is solved. The automatic bag neatening machine comprises a rack provided with a clamping device, a material collecting device, a driving piece and a transmission assembly; the clamping device comprises a clamping assembly which has a first position expanding to be used for receiving to-be-machined materials, a second position for clamping the materials to move along with the transmission assembly and a third position expanding to enable the materials to fall from the clamping assembly and enter the material collecting device; the material collecting device comprises a material collecting table and a baffle; and the material collecting table, the transmission assembly and the baffle are matched to form a containing space. The automatic bag neatening machine has the beneficial effects that the clamping device is arranged, and the