To positively unload a work from a receiving tray by providing a freely rotating holder in the center of a mesh and the receiving tray and radially stretching plural pieces of chain member which is long enough to allow its tip part to come into contact with the mesh and the inner face of the outer peripheral wall of the receiving tray from the holder.

A freely rotating holder 13 of a cross shape as viewed on a plane is mounted in the center of a mesh and the bottom face 10 of a receiving tray 11, and the base end of each of chain members 12 is anchored on each of protrusion pieces 13a, 13b, 13c, 13d of the holder 13, and each of the chain members 12 is made up of a ball chain consisting of plural pieces of a small sphere 15 and a connecting piece 16 which mutually connects these small spheres 15 in a freely rocking manner. In addition, the ball chain is of such a length that its tip part 12a comes into contact with the inner face 18 of the outer peripheral wall 17 of the receiving tray 11. That is, the length is more than enough to allow the 3-4 pieces of the small sphere 15 on the tip side to come into contact with the inner face of the outer peripheral wall 17 of the receiving tray 11. Thus, it is possible to peel off a work sticking to the corner part of the receiving tray 11 or the mesh.