Rotating structure of rotary member

A press molding apparatus structure comprising:

• a main body having a width;
• a rotary member mounted on said main body and having a width;
• and
• at least one rotating block operably mounted between said main body and said rotary member to rotatably mount said rotary member to said main body for rotation about a rotation axis that extends in the width direction;
• wherein said at least one rotating block includes a convex strip attached to a lower portion of the rotary member and a concave strip attached to the main body;
• wherein the concave strip includes a flat mounting portion mounted to said main body 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;
• wherein the convex strip includes a flat mounting portion mounted to said rotary member and a convex sliding portion slidably mounted on said concave sliding portion of said concave strip such that the convex strip and said rotary member are rotatably slidable relative to said concave strip and said main body, said convex strip being formed with bolt holes penetrating through the mounting portion of the convex strip and the convex sliding portion at a plurality of positions;
• wherein projecting portions are mounted at both ends of the rotary member in the width direction at positions below said rotation axis;
• and
• wherein 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.