JPS6255419U

JPS6255419U -

Info

Publication number: JPS6255419U
Application number: JP14776285U
Authority: JP
Priority date: 1985-09-27
Filing date: 1985-09-27
Publication date: 1987-04-06

Description

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

第１図は本考案の一実施例を示す正断面図、第
２図は第１図のＡ〜線に沿う平断面図、第３図、
第４図は第１図中のノズルタツチ部の作用説明用
正断面図、第５図はノズル穴とホツトランナでの
樹脂滞留、漏れの状況を示す概要図である。２……射出ノズル、５……ホツトランナボデイ
、６……ホツトランナ、７……バルブ装着孔、９
……溝、１０……ロータリバルブ、１１……止メ
ナツト、１２……ワツシヤ、１３……凹部、１４
……流路、１５……レバー。 Fig. 1 is a front sectional view showing an embodiment of the present invention, Fig. 2 is a plan sectional view taken along line A~ in Fig. 1, Fig. 3;
FIG. 4 is a front sectional view for explaining the operation of the nozzle touch part in FIG. 1, and FIG. 5 is a schematic diagram showing the situation of resin retention and leakage in the nozzle hole and hot runner. 2...Injection nozzle, 5...Hot runner body, 6...Hot runner, 7...Valve mounting hole, 9
... Groove, 10 ... Rotary valve, 11 ... Stop nut, 12 ... Washer, 13 ... Recess, 14
...Flow path, 15...Lever.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

ホツトランナボデイの射出ノズル側部に、射出
ノズル側に一部を露出させたロータリバルブを内
蔵し、該ロータリバルブの露出した側面に凹部を
設け、かつ、内部に、射出ノズルが前記凹部に接
触したときノズル内をホツトランナに連通させる
流路を設けると共に、前記ロータリバルブを開き
位置及び閉じ位置間で回転させるバルブ開閉装置
を設けたことを特徴とするホツトランナ逆流防止
弁。 A rotary valve with a part exposed on the injection nozzle side is built into the injection nozzle side of the hot runner body, and a recess is provided in the exposed side of the rotary valve, and the injection nozzle contacts the recess inside. A hot runner backflow prevention valve characterized in that a flow path is provided to communicate the inside of the nozzle with the hot runner when the hot runner is turned on, and a valve opening/closing device is provided for rotating the rotary valve between an open position and a closed position.