The utility model relates to an automatic code machine and especially relates to the machine capable of automatically stacking silicon steel sheets into silicon steel laminations of certain thicknesses and winding and fixing by an adhesive tape. A feeding portion and a material distributing portion are respectively arranged above and below the left side of the automatic code machine. An adhesive supplying portion is arranged above the right side of the automatic code machine. The middle portion of the automatic code machine is provided with a collection portion. A sizing portion is arranged at the lower portion of the automatic code machine. The automatic code machine has following beneficial effects: the automatic code machine is capable of automatically stacking the silicon steel sheets into the silicon steel laminations of certain thicknesses and winding and fixing by the adhesive tape; one machine can stack six silicon steel laminations every minute and replace ten skilled operation workers to work so that production efficiency is effectively enhanced and labor intensity of the workers is reduced; and the machine is used for controlling gaps and thicknesses of the silicon steel laminations so that consistency of products is greatly improved and a potential safety hazard of thickness measurement by hands of the silicon steel laminations is eliminated.