PURPOSE: To surely release a sucked member from a sucker by providing an energizing means for energizing a member to be sucked in the reverse direction to the sucking direction of the member to be sucked within a sucker.

CONSTITUTION: When a table 21 is pushed up to bring the surface of a tile 25 into contact with a sucking vat 17b, a detecting pin 17d5 is lifted up against the elastic force of a spring 35, a vacuum pump is operated, and the sucking vat 17b is evacuated through hole parts 17e, 17c and an air passage 17f to suck the tile 25. On the other hand, to release the tile 25 from the sucker 17, the table 21 is lowered, the operation of the vacuum pump is stopped, and air is introduced into the sucking vat 17b to release the tile 25. At this time, since the pin 17d5 is energized downward by the spring 35 through a valve 17d, the detecting pin 17d5 acts to push down the tile 25 in the releasing of the tile 25, so that the release of the tile 25 can be ensured and facilitated further more.