Patent ID: 8506281

Claim:
A rotating structure of a rotary member having a predetermined width and being disposed in a press molding apparatus, comprising: the rotary member; a main body positioned under the rotary member; and a rotating block to be attached between the rotary member and the main body to allow the rotary member to rotate relative to the main body about an axial center position, wherein the rotating block includes a convex strip to be attached to a lower portion of the rotary member and a concave strip to be attached to the main body, the convex strip includes a flat mounting portion and a convex sliding portion, and is formed with bolt holes penetrating through the mounting portion and the convex sliding portion at a plurality of positions, the concave strip includes a flat mounting portion and a concave sliding portion, and is formed with bolt holes penetrating through the mounting portion and the concave sliding portion at a plurality of positions, the convex sliding portion and the concave sliding portion are mounted to each other for slidable movement between slidable positions, projecting portions are mounted at both ends of the rotary member in the width direction at positions lower than the axial center position of the rotary member, and arcuate shaped drop preventing holding portions are mounted to the main body and disposed to engage the projecting portions, the arcuate shaped drop preventing holding portions each having an arcuate shape corresponding in shape to a trajectory of rotation of the rotary member relative to the main body so that edge portions of the projecting portions move along edge portions of the drop preventing holding portions in association with the rotation of the rotary member.