JPH01141017U

JPH01141017U -

Info

Publication number: JPH01141017U
Application number: JP3802488U
Authority: JP
Priority date: 1988-03-23
Filing date: 1988-03-23
Publication date: 1989-09-27

Description

[Brief explanation of the drawing]

第１図は本考案に係る樹脂金型の一実施例を示
す縦断断面図であつてその要部を示すもの、第２
図は従来のホツトランナ式金型の縦断断面図、第
３図は第２図の要部を拡大して示す図、第４図は
第３図に示した点線枠Ａ内を示す図であつてホツ
トランナブロツクが熱膨張した状態を示すもので
ある。１……固定側金型、２……可動側金型、３……
キヤビテイ、８……ホツトランナブロツク、８ｃ
……ホツトランナブロツクの凹部、１３……スプ
ルブツシユ、１３ｄ……スプルブツシユの凸部、
２０……穴、２１……スプル、２２……ボルト。 Fig. 1 is a vertical cross-sectional view showing one embodiment of the resin mold according to the present invention, showing its main parts;
The figure is a vertical cross-sectional view of a conventional hot runner type mold, FIG. 3 is an enlarged view of the main part of FIG. 2, and FIG. This shows the state in which the hot runner block is thermally expanded. 1...Fixed side mold, 2...Movable side mold, 3...
Cavity, 8... Hot runner block, 8c
...Concave part of hot runner block, 13...Sprue bush, 13d...Protrusion of sprue bush,
20...hole, 21...sprue, 22...bolt.

Claims

[Scope of utility model registration request]

A hot runner block is disposed on the side of the stationary side mold, a sprue bush is connected to the block and disposed within the stationary side mold, and the hot runner block is formed between the stationary side mold and the movable side mold. In a resin mold in which a molten material heated and kept warm by a hot runner block is injected into a cavity through a sprue bushing, the fixed side mold is provided with a bottomed hole for accommodating the sprue bush; A sprue bushing is fixed to the hot runner block by forming a bottom surface parallel to the longitudinal direction of the hot runner block, and the tip surface of the sprue bushing is brought into contact with the bottom surface of the hole, and the tip sprue of the sprue bushing is attached to the bottom surface of the hole. 1. A resin mold characterized in that a sprue opening with a diameter slightly larger than the diameter is provided on the stationary side mold, and the sprue of the sprue bushing is communicated with the cavity via the sprue.