Core molding method and core molding device
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorsKazuyuki TSUTSUMI, Yusaku TAKAGAWA
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Abstract
A core molding method for molding a core having a twisted shape by use of a core mold includes a curing step and a mold extracting step. In the curing step, after the core mold is disposed along a vertical direction within a frame whose top is open, a self-hardening sand formed of a kneaded mixture of a sand, a resin and a curing agent is charged into the frame from the top of the frame, and then cured. In the mold extracting step, the core mold is extracted in the vertical direction from the core formed of the cured self-hardening sand while rotating the core mold and the frame relatively to each other around an axis of the core mold.
Claims16
A core molding method for molding a core having a twisted shape by use of a core mold, the core molding method comprising:
- a curing step in which after the core mold is disposed along a vertical direction within a frame whose top is open, a self-hardening sand formed of a kneaded mixture of a sand, a resin and a curing agent is charged into the frame from the top of the frame, and then cured;
- and
- a mold extracting step in which the core mold is extracted in the vertical direction from the core formed of the cured self-hardening sand while rotating the core mold and the frame relatively to each other around an axis of the core mold.
A core molding apparatus for molding a core having a twisted shape by use of a core mold, the core molding apparatus comprising:
- a frame whose top is open and in which the core mold is internally disposed along a vertical direction, the frame configured to be filled with a self-hardening sand formed of a kneaded mixture of a sand, a resin and a curing agent from the top of the frame, the self-hardening sand being subjected to curing;
- and
- a rotary driving unit which rotates the core mold and the frame relatively to each other around an axis of the core mold so that the core mold is extracted in the vertical direction from the core formed of the cured self-hardening sand.
Dependencies are inferred from the claim text.