Pile up neatly machinery arm

The utility model discloses a pile up neatly machinery arm belongs to automatic pile up neatly robotechnology field. The utility model discloses a pile up neatly machinery arm, including big arm, forearm, base, pivot and transmission, wherein: the stiff end of base is fixed in arbitrary station, and the link of base loops through the bull stick with big arm, forearm and connects, the forearm is the motion of the planar direction of perpendicular to forearm through transmission in the pivot, transmission fixed connection opens in some slotted holes on the forearm to connect with the pivot rotary type. The utility model discloses an even if narrow and small space also can the pile up neatly the purpose, the range of application is wide moreover, and is flexible.