PURPOSE: To aim at reduction in the cost of equipment, by installing a file of conveyors intermittently conveying tiles and suction devices being one unit fewer than the desired number of stacking sheets and free of both total and individual shifting motions, while making a stacking of the required number of sheets performable automatically with intermittent conveyance of tiles.

CONSTITUTION: Each tile K carried in from a carrying-in conveyor is picked up by forks 6 being radially attached to a turnover drum 5 of a turnover device 7 in regular sequence, then turned over upside down, and mounted on each first stacking conveyor 18 for carrying out. This motion is repeated in consecutive order and each tile K is mounted on each of conveyors 18, the interlocking this motion, both lifting motions of a total lifting cylinder 26 and an individual lifting cylinder 33 are mutually interconnected and thereby controlled so that while these tiles K are transferred from the conveyor 18 at the right end side of the conveyor 18 at the left end side, these tiles K are stacked up one by one in order, thus a our-sheet stacking state is secured by conveyor 18 at the left end side.