JPS6024519U - injection mold - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は従来の射出成形用金型の断面図、第２図は第１
図の金型を用いた場合の欠陥を示す説明図、第３図は本
考案の一実施例の射出成形用金型の断面図、第４図は第
３図の金型により得られた射出成形用金型の断面図であ
る。 ８：固定金型、９：貫通穴（陥入部）、１２：移動金型
、１３：コアピン（突起体）、１４：キャビティ。Figure 1 is a cross-sectional view of a conventional injection mold, and Figure 2 is a cross-sectional view of a conventional injection mold.
Fig. 3 is a cross-sectional view of an injection mold according to an embodiment of the present invention, and Fig. 4 is an explanatory diagram showing defects when using the mold shown in Fig. 3. FIG. 3 is a cross-sectional view of a molding die. 8: Fixed mold, 9: Through hole (invaginated part), 12: Movable mold, 13: Core pin (protrusion), 14: Cavity.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 一対の金型からなりこれら金型の密着により形成された
キャビティに溶融樹脂を射出することにより貫通穴を有
する射出成形品が成形される射出成形用金型において、
上記一対の金型のいずれか一方又は両方の上記キャビテ
ィ形成位置に上記貫通穴とほぼ同一寸法の突起体が設け
られているとともに、上記突起体が設けられている金型
に対向する他方の金型に上記一対の金型が密着したとき
に上記突起体が収納される陥入部が形成されていること
を特徴とする射出成形用金型。In an injection mold that is composed of a pair of molds and in which an injection molded product having a through hole is molded by injecting molten resin into a cavity formed by the close contact of these molds,
A protrusion having substantially the same dimensions as the through hole is provided at the cavity forming position of one or both of the pair of molds, and the other mold is opposite to the mold in which the protrusion is provided. A mold for injection molding, characterized in that a recessed portion is formed in which the protrusion is accommodated when the pair of molds are brought into close contact with each other.