JPS62189860U

JPS62189860U -

Info

Publication number: JPS62189860U
Application number: JP7414686U
Authority: JP
Priority date: 1986-05-16
Filing date: 1986-05-16
Publication date: 1987-12-03

Description

[Brief explanation of the drawing]

第１図、第２図は本考案に係る射出成形機にお
けるガス抜き装置の弁機構の実施例を夫々示す開
弁状態の縦断側面図と閉弁状態の縦断側面図、第
３図はガス抜き装置の半断側面図である。１……検知系バルブ、２……検知バルブ本体、
３……弁孔、３ｂ……弁座、４……検知バルブ、
５ａ……鋼球、６，６……ストツパー、７……切
換弁、１０……弁ホルダー、１１……弁孔、１５
……排気系バルブ、２１……キヤビテイ、２２，
２３……排気路、○ア，○イ，○ウ……エアー室
。 FIGS. 1 and 2 are a vertical side view in an open state and a vertical side view in a closed state, showing an embodiment of the valve mechanism of a gas venting device in an injection molding machine according to the present invention, respectively, and FIG. 3 is a vertical side view in a closed state, and FIG. FIG. 2 is a half-sectional side view of the device. 1...Detection system valve, 2...Detection valve body,
3... Valve hole, 3b... Valve seat, 4... Detection valve,
5a... Steel ball, 6, 6... Stopper, 7... Switching valve, 10... Valve holder, 11... Valve hole, 15
... Exhaust system valve, 21 ... Cavity, 22,
23...Exhaust passage, ○a, ○i, ○u...air chamber.

Claims

[Scope of utility model registration request]

Two exhaust passages 22 and 23, through which the molten metal filling the cavity 21 reaches with a time difference, are respectively led from the cavity, and the exhaust passage through which the molten metal reaches earlier is closed by the inertia of the molten metal during injection. A detection system valve 1 is disposed to detect the molten metal, and an exhaust system valve 15 is disposed in the exhaust path where the molten metal arrives late.
In a valve mechanism of a degassing device in an injection molding machine, in which both the above-mentioned valves are communicated so that when the detection system valve is closed, the exhaust system valve is closed by air supplied from an air source. , a detection valve inserted into the valve hole 3 of the detection valve body 2 so as to be slidable in the axial direction and held in the open position by stoppers 6, 6, each of which has a steel ball 5a biased by a spring force. A switching valve 7 is fixedly integrated with the switch valve 4, so that the switching valve can be seated airtightly on the valve seat 3b of the detection valve body, and airtightly fitted into the valve hole 11 of the valve holder 10 fixed to the detection valve body. An air chamber ○a that is slidably fitted and connected to an air source around the switching valve and around the detection valve so as to be able to communicate with each other or to be shut off by the closing or opening operation of the detection valve. A valve mechanism for a gas venting device in an injection molding machine, characterized in that it is provided with an air chamber ○A connected to an air chamber ○C of an exhaust system valve.