JPH0467024U

JPH0467024U -

Info

Publication number: JPH0467024U
Application number: JP10946990U
Authority: JP
Priority date: 1990-10-19
Filing date: 1990-10-19
Publication date: 1992-06-15

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図および第２図は本考案に関わる射出成形
用金型装置の動作態様を示す要部断面側面図、第
３図および第６図は本考案に関わる射出成形用金
型装置の他の実施例を示す要部断面側面図、第４
図は第３図中の−線断面図、第５図は第３図
中の−線断面図、第７図はアンダーカツト部
を有するワークの一例を示す要部斜視図、第８図
は第７図中の−線断面図、第９図は従来の射
出成形用金型装置を示す要部断面側面図である。１，１′……射出成形用金型装置、２，２′…
…固定型、３，３′……可動型、４，４′……製
品キヤビテイ、５，５′……ピン中子、６，６′
……圧縮ばね、１０，１０′……カム機構、２ａ
……カム面、５ｃ……頂部斜面（カムフオロワ）
、１５……ピン（カムフオロワ）、２０……カム
部材、２０ｕ……アツパフランジ（カム面）、２
０１……ロワフランジ（カム面）、１００，１０
０′……射出成形品、１００ａ，１００ａ′……
段付き孔（アンダーカツト部）。 1 and 2 are cross-sectional side views of essential parts showing the operation mode of the injection mold device related to the present invention, and FIGS. 3 and 6 are other sectional side views of the injection mold device related to the present invention. Main part cross-sectional side view showing the embodiment, No. 4
The figure is a sectional view taken along the - line in FIG. 3, FIG. 5 is a sectional view taken along the - line in FIG. 7 is a cross-sectional view taken along the line --, and FIG. 9 is a cross-sectional side view of a main part of a conventional injection mold device. 1, 1'...Injection mold device, 2, 2'...
...Fixed type, 3,3'...Movable type, 4,4'...Product cavity, 5,5'...Pin core, 6,6'
...Compression spring, 10,10'...Cam mechanism, 2a
...Cam surface, 5c...Top slope (cam follower)
, 15...Pin (cam follower), 20...Cam member, 20u...Atsupa flange (cam surface), 2
01...Lower flange (cam surface), 100,10
0'...Injection molded product, 100a, 100a'...
Stepped hole (undercut part).

Claims

【実用新案登録請求の範囲】固定型と可動型とにより画成される製品キヤビ
テイ内に、アンダーカツト部を形成するためのピ
ン中子を出没自在に備えた射出成形用金型装置に
おいて、上記可動型に進退自在に設けられたピン中子と
、上記固定型に形成されたカム面と上記ピン中子
に設けられたカムフオロワとを具備し、上記固定
型と可動型との近接離反動作に基づいて上記ピン
中子を上記製品キヤビテイー内に出没動作させる
一方、固定型と可動型とが閉じている際、上記製
品キヤビテイー内に占位している上記ピン中子の
移動を阻止するカム機構と、を備えて成ることを特徴とする射出成形用金型装
置。[Scope of Claim for Utility Model Registration] In an injection molding mold device that is provided with a pin core for forming an undercut portion that can be freely retracted and retracted into a product cavity defined by a fixed mold and a movable mold, The movable type has a pin core provided in the movable type so as to move forward and backward, a cam surface formed on the fixed type and a cam follower provided in the pin core, and the movable type is provided with a pin core provided on the movable type so as to move forward and backward, and the movable type is provided with a cam follower provided on the pin core. a cam mechanism that causes the pin core to move in and out of the product cavity based on the movement of the pin core, and prevents movement of the pin core occupying the product cavity when the fixed mold and the movable mold are closed; An injection mold device characterized by comprising: and.