Insert-molded article manufacturing method, insert-molding die, and insert-molded article
AssigneeYazaki Corporation
InventorsKazuhiro TSUCHIDA, Tomohiro SHIBATA
Life of this patent
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Abstract
An insert-molded article manufacturing method includes: an insert process of disposing a metal collar in a first die; and a clamping process of clamping a second die and the first die to press an opening edge (13a) of a cylindrical portion on a side of the second die from a side of an inner peripheral surface to an outer side by a pressing protrusion formed to project radially outward from an outer peripheral surface of an insertion portion and form a locking protrusion on an outer peripheral surface of the cylindrical portion corresponding to the opening edge.
Claims14
An insert-molded article manufacturing method comprising:
- an insert process of disposing a metal collar including a tubular portion in a first die such that an axial center of the tubular portion follows a clamping direction;
- a clamping process of clamping a second die including a pillar-shaped insertion portion and the first die to insert the insertion portion from a side of the second die to a side of an inner peripheral surface of the tubular portion, pressing an opening edge of the tubular portion on the side of the second die from the side of the inner peripheral surface to the outer side by a pressing protrusion formed to project radially outward from an outer peripheral surface of the insertion portion, and forming a locking protrusion on an outer peripheral surface of the tubular portion corresponding to the opening edge;
- and
- a molding process of filling a cavity formed around the tubular portion by the first die and the second die clamped in the clamping process with a resin.
An insert-molding die comprising:
- a first die that includes a metal collar support portion that supports a metal collar including a tubular portion;
- and
- a second die that includes an insertion portion inserted into the tubular portion of the metal collar and includes a pressing protrusion formed to project radially outward from an outer peripheral surface of the insertion portion to press an opening edge of the tubular portion from a side of an inner peripheral surface to an outer side, wherein
- the metal collar support portion of the first die includes a collar end surface support surface that abuts on an end surface of the metal collar on one side, and
- the second die includes an annular collar end surface abutting surface that is formed around a base portion of the insertion portion to abut on an end surface of the metal collar on the other side and a protrusion forming portion that includes a clearance space formed on a radially outer side of the collar end surface abutting surface and formed to be able to release an outer periphery of the pressed and deformed metal collar.
An insert-molded article comprising:
- a metal collar that includes a tubular portion;
- and
- a resin molded portion with which the metal collar is assembled, wherein
- the tubular portion is provided with an inclined edge portion that is formed to expand from an inner peripheral surface to an opening edge of the tubular portion and a locking protrusion that projects radially outward from an outer peripheral surface of the tubular portion and bites into and locks the resin molded portion, and
- an end surface of the tubular portion to which the opening edge provided with the inclined edge portion is connected is formed in a flat surface shape.
Dependencies are inferred from the claim text.