JPH0440915U

JPH0440915U -

Info

Publication number: JPH0440915U
Application number: JP8315890U
Authority: JP
Priority date: 1990-08-06
Filing date: 1990-08-06
Publication date: 1992-04-07

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例を示す第３図Ｃ部
拡大断面図、第２図Ａは、同実施例の常温時の状
態を示す説明図、第２図Ｂは、同実施例の昇温時
の状態を示す説明図、第３図は、樹脂成形金型の
全体断面図、第４図は、従来の構造を示す第３図
Ｃ部拡大断面図、第５図は、他の従来の構造を示
す第３図Ｃ部拡大断面図である。１……キヤビ型、２……コア型、３……製品成
形部、４……樹脂注入口、７……ホツトランナー
ブロツク、８……第１通路、１０……ホツトスプ
ル、１１……第２通路、１５……（第１通路の）
他端部、１６……コールドスプル、１７……第３
通路、２２……雄ねじ部、２３……ベース部、２
７……摺接面、２７……凹部。 FIG. 1 is an enlarged sectional view of part C in FIG. 3 showing an embodiment of the present invention, FIG. 2A is an explanatory diagram showing the same embodiment at room temperature, and FIG. FIG. 3 is an overall sectional view of the resin molding mold, FIG. 4 is an enlarged sectional view of section C in FIG. 3 showing the conventional structure, and FIG. FIG. 3 is an enlarged cross-sectional view of section C in FIG. 3, showing the conventional structure. 1... Cavity mold, 2... Core mold, 3... Product molding section, 4... Resin injection port, 7... Hot runner block, 8... First passage, 10... Hot sprue, 11... Second Aisle, 15... (of the first aisle)
Other end, 16... cold sprue, 17... third
Passage, 22...Male thread part, 23...Base part, 2
7... Sliding surface, 27... Recessed portion.

Claims

[Scope of utility model registration request]

It is composed of a cavity mold having a resin injection port and a core mold having a product molding part, and a hot runner block having a first passage and extending horizontally in the core mold within the cavity mold; A hot sprue having a second passage communicating with an end of the first passage and extending in the direction of the core mold, and a cold sprue having a third passage communicating the second passage of the hot sprue with the product forming section of the core mold. and a heater for heating the hot runner block and the hot sprue, the molten resin injected from the resin injection port is sequentially passed through the first, second, and third passages to the product molding section. In the leading resin molding die, the hot sprue is fixed to the hot runner block at its base end, and has a spherical sliding contact surface formed at its tip, and the cold sprue has the sliding contact surface. A sprue structure of a resin molding mold characterized by a spherical recess that is in contact with the surface.