Replaceable mold part
AssigneeUratani Shoji Company Ltd.
InventorNaoto URATANI
Life of this patent
Estimating the term…
Abstract
A replaceable mold part according to the present invention comprises: a depressed portion remained near a cavity; and a detachable portion, the detachable portion having a marking portion or a gas-releasing function, and being caught by a catch mechanism within the depressed portion. When a magnet is brought into proximity of the detachable portion through the cavity and an external magnetic field is applied, a magnet support portion's position is shifted from the fixed location to the released location within the depressed portion so that the catch mechanism of the detachable portion by the depressed portion is switched from the fixed state to the released state, thereby the detachable portion can easily be removed from the depressed portion through the cavity.
Claims17
A replaceable mold part to be attached to an indentation near a cavity in a mold base for molding process, the replaceable mold part comprising:
- a depressed portion provided in the indentation and remained in the cavity;
- and
- a detachable portion inserted into the depressed portion through the cavity and switched between a fixed state and a released state with respect to the depressed portion,
- wherein the depressed portion comprises a magnet support portion sliding in a depth direction of the depressed portion and supporting a depression-side magnet or a magnetic material piece,
- wherein the depressed portion further comprises a catch mechanism switching the detachable portion to the fixed state by catching the detachable portion by the depressed portion while switching the detachable portion to the released state by releasing the catch,
- wherein the depressed portion has a first bias means for biasing a force to control movement of the detachable portion from a fixed position to a released position,
- wherein the magnet support portion is provided with a fixed position and a released position of the catch mechanism,
- wherein the detachable portion comprises a function portion for achieving a given function, and
- wherein a magnetic field generated by an external magnetic field generating means overcomes the force of the first bias means to control, thereby shifting the magnet support portion from the fixed position to the released position.
Dependencies are inferred from the claim text.