To repeat separation or press contact between a pressing member and the upper surfaces of a lade plate of saw plate material by moving the pressing member up and down, to warp the saw plate material longitudinally and horizontally return the saw plate material due to self elasticity by the separation of the pressing member, to separate the second saw plate material that is sucked by the repetition from the first saw plate material and drop the second sheet, and to convey the saw plate material one by one.

A feeding part 10 capable of conveying the saw plate materials W in a storing part 2 to a loading part 4 one by one is provided with a pair of suction members 17 and 17 capable of sucking the blade plate K of the saw plate materials at an interval in the longitudinal direction of the saw plate materials W, and the pressing member 20 capable of pressing the blade plate K of the saw plate materials is disposed between the pair of suction members.