The invention relates to the technical field of bag breaking machines, and discloses an automatic bag breaking
machine and a garbage classification device. The automatic bag breaking
machine comprises a conveying mechanism, a
cutting table, a collecting
barrel and a clamping plate
assembly. The conveying mechanism is used for conveying garbage bags. The
cutting table comprises a containing box, a turning plate and a cutter, wherein the containing box is arranged at the
tail end of the conveying mechanism; the cutter is slidably arranged at the bottom of the containing box so as to
cut the garbage bag open; the turning plate is rotatably arranged at the bottom of the containing box and is configured to be capable of blocking the bottom opening of the containing box so as to bear a garbage bag; or after the garbage bag is
cut open, the bottom opening of the containing box is opened. The collecting
barrel is used for storing the
cut garbage bag. The clamping plate
assembly comprises a lifting rod and at least two clamping plates, wherein the lifting rod is arranged between the containing box and the collecting
barrel in a sliding mode, and the at least two clamping plates are configured to be capable of getting close to each other so as to clamp a garbage bag; or the clamping plates are away from each other to release the garbage bag. The automatic bag breaking
machine can quickly complete bag breaking of the garbage bags, so that the bag breaking efficiency is improved.