US 2019/0315020 A1Published application

Molding core

AssigneeHokosangyo Co., Ltd.

InventorYasuhiro BAN

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Abstract

One aspect of the present disclosure is a rod-shaped molding core used in production of a long and hollow molded object. The molding core includes divided pieces that assemble to form a rod-shaped body. The divided pieces include rod-shaped first, second, third, fourth, and fifth divided pieces. An outer peripheral surface of the first divided piece is entirely surrounded by the rest of the divided pieces in an assembled state. The second and third divided pieces are arranged to abut and interpose the first divided piece along a first direction orthogonal to a longitudinal direction and form a part of an outer peripheral surface of the rod-shaped body. The fourth and fifth divided pieces are arranged to abut and interpose the first divided piece along a second direction orthogonal to the first direction and form a part of the outer peripheral surface of the rod-shaped body.

Claims7

Dependent claims

A molding core having a rod-shape and used in production of a long and hollow molded object, the molding core comprising:

divided pieces that are assembled to form a rod-shaped body,
the divided pieces comprising:
a first divided piece having a rod-shape, an outer peripheral surface of the first divided piece being entirely surrounded by the rest of the divided pieces in an assembled state,
a second divided piece and a third divided piece having a rod-shape and arranged to abut the first divided piece to interpose the first divided piece along a first direction orthogonal to a longitudinal direction of the first divided piece and form a part of an outer peripheral surface of the rod-shaped body,
a fourth divided piece and a fifth divided piece having a rod-shape and arranged to abut the first divided piece to interpose the first divided piece along a second direction orthogonal to the first direction and form a part of the outer peripheral surface of the rod-shaped body, and
the second divided piece, the third divided piece, the fourth divided piece, and the fifth divided piece being detachably fixed to the first divided piece.

3 more elements

Dependencies are inferred from the claim text.