PURPOSE:To exactly count the number of stacked corrugated cardboards to be carried out and as well to smoothly carry out corrugated cardboards, by arranging a movable stopper in parallel with a stationary stopper, and as well by constituting a spanker with a double spanker including inner spanker and an outer spanker. CONSTITUTION:A movable stopper 44 which moves up and down upon carrying out of corrugated cardboards, is arranged in parallel with a stationary stopper 42, and a spanker is composed of an inner spanker 46 which moves upward together with the movable stopper 44 and an outer spanker 48 which is coupled to a drive means 60 through a link mechanism 58. With this arrangement, the movable stopper 44 and the inner spanker 46 are moved upward each time when corrugated cardboards are stacked up in a predetermined number, to separate and carry out these corrugated cardboards, and as well to stack up and store newly fed corrugated cardboards between the movable stopper 44 and the outer spanker 48 so that the number of the stacked corrugated cardboards to be carried out may be exactly counted, and as well the corrugated carboards may be smoothly carried out.