Molding apparatus having a projecting bulge located in a die half
AssigneeKabushiki Kaisha Tokai Rika Denki Seisakusho
InventorShinichi Saiki
Life of this patent
Estimating the term…
Abstract
A molding apparatus includes a first die having an exterior forming surface and a second die. When the apparatus is closed, the first and second dies define a cavity. A bulge projects from the exterior forming surface of the first die toward the second die. A core receiving section, or a recess, is formed in the second die. When forming a through hole in a molded product, a first core is provided in the core receiving section. The first core contacts the bulge when the molding apparatus is closed. When a groove is formed on an exterior surface of a molded product by the bulge of the exterior forming surface, a second core is provided in the core receiving position. The second core is separated from the exterior forming surface when the apparatus is closed.
Claims4
A molding apparatus comprising:
- a first die having an exterior forming surface;
- a second die that has a core receiving section having a support surface that can support a core, wherein, when the apparatus is closed, the first and second dies define a cavity;
- and
- a bulge projecting from the exterior forming surface of the first die, wherein the bulge is positioned opposite die support surface;
- wherein, when the apparatus is closed, a projection is selectively formed on the second die by providing a core at the core receiving section such that the core is supported by the support surface of the core receiving section, the projection being located on a section of the second die that corresponds to the bulge;
- and
- wherein, when a through hole is formed in a molded product, the projection is formed on the second die, and wherein, when a groove is formed on an exterior surface of a molded product by the bulge of the exterior forming surface, the projection is not formed on the second die.
Dependencies are inferred from the claim text.