Patent ID: 8876514
Filing Date: 2014-11-04
Classification: B29C,B29L,B64F,Y10T

Abstract:
1. A mold used for manufacturing a composite material structure, the mold being inserted into the composite material structure of a substantially cylindrical shape, and used, said mold comprising: a plurality of segments of at least two kinds, the segments having a rectangular plate shape and each having an obverse surface having a convex-shape, the obverse surface being one of main surfaces of each of the segments; and a pair of annular retaining members for fastening both end surfaces of each of the plurality of segments; wherein: the plurality of segments are retained as a single cylindrical member such that the end surfaces of each of the plurality of segments are fastened to the annular retaining members in a state where the obverse surface of each of the plurality of segments faces outward, and side surfaces of adjacent segments are joined together, and the plurality of segments include: the mold further comprising: an annular fastening/retaining mechanism which lifts up the first segment or the second segment, fastens the end surfaces of the first segment or the second segment to fastening surfaces of the annular retaining members, and retains a state in which the end surfaces of the first segment or the second segment are fastened to the fastening surfaces of the annular retaining members, the annular fastening/retaining mechanism including: the protruding portion of the male fastener member having a through-hole penetrating the protruding portion, the fastened state retaining member including a wedge member positioned such that the wedge member is extendable to and retractable from the protruding portion of the male fastener member inserted into the recess or the opening of the female fastener member, and the wedge member being movable to an advanced position toward the protruding portion and inserted into the through-hole of the protruding portion to retain a state in which the male fastener member is inserted into the female fastener member.