JPS63145551U

JPS63145551U -

Info

Publication number: JPS63145551U
Application number: JP3780087U
Authority: JP
Priority date: 1987-03-13
Filing date: 1987-03-13
Publication date: 1988-09-26

Description

[Brief explanation of the drawing]

第１図は本考案に係る射出成形機におけるガス
抜き装置の排気バルブ係止機構の実施例を一部断
面して示す正面図、第２図は同実施例における検
知系バルブの縦断側面図、第３図イ，ロは第１図
における―線各矢視横断面図で、イは排気バ
ルブの係止状態を示し、ロは排気バルブの係止解
除状態を示す。１…検知系バルブ、２…排気系バルブ、３…検
知バルブ、１９…エアーシリンダー、２０…ピス
トン、２１…係止孔、２７…排気バルブ、２７ａ
…バルブ軸、２７ｅ…段部、３５…金型、４２…
キヤビテイ、４３，４４…排気路。 FIG. 1 is a partially sectional front view showing an embodiment of an exhaust valve locking mechanism of a gas venting device in an injection molding machine according to the present invention, and FIG. 2 is a longitudinal sectional side view of a detection system valve in the same embodiment. 3A and 3B are cross-sectional views taken along the line -- in FIG. 1, where A shows the exhaust valve in a locked state, and B shows the exhaust valve in a released state. 1... Detection system valve, 2... Exhaust system valve, 3... Detection valve, 19... Air cylinder, 20... Piston, 21... Locking hole, 27... Exhaust valve, 27a
...Valve shaft, 27e...Step part, 35...Mold, 42...
Cavity, 43, 44...Exhaust path.

補正昭６３．６．１３実用新案登録請求の範囲を次のように補正する
。Amendment June 13, 1986 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】金型３５のキヤビテイ４２から夫々導設された
各排出路４３，４４に検知系バルブ１と排気系バ
ルブ２を、該検知系バルブは、検知バルブ３を射
出時の溶湯の慣性力によつて閉じ動作可能に、又
排気系バルブは排気バルブ２７をエアー圧によつ
て常時閉じ方向へ付勢せしめて夫々配設し、上記
検知系バルブには、検知バルブの閉じ動作と同時
にエアー源と連通可能なるようエアーシリンダー
１９を連設し、該エアーシリンダーに嵌挿したピ
ストン２０を排気系バルブ内に延出させ、その延
出端に穿設した係止孔２１の周縁と、上記排気バ
ルブのバルブ軸２７ａに設けた段部２７ｅを係脱
自在に当接することにより当該排気バルブをエア
ー圧に抗して開き状態に係止保持するよう構成し
たことを特徴とする射出成形機におけるガス抜き
装置の排気バルブ係止機構。[Claims for Utility Model Registration] A detection system valve 1 and an exhaust system valve 2 are installed in each of the discharge passages 43 and 44 respectively led from the cavity 42 of the mold 35. The exhaust system valve is arranged such that it can be closed by the inertia of the molten metal, and the exhaust valve 27 is always urged in the closing direction by air pressure. An air cylinder 19 is arranged in series so as to be able to communicate with an air source at the same time as the closing operation, a piston 20 fitted into the air cylinder is extended into the exhaust system valve, and a locking hole 21 is bored at the extending end. The exhaust valve is configured to be held in an open state against air pressure by removably abutting the peripheral edge of the stepped portion 27e provided on the valve shaft 27a of the exhaust valve. Exhaust valve locking mechanism of gas venting device in injection molding machine.

Claims

[Scope of utility model registration request]

A detection system valve 1 and an exhaust system valve 2 are connected to each discharge passage 43 and 44 respectively led from the cavity 42 of the mold 35. The exhaust system valves are arranged such that the exhaust valve 27 is always urged in the closing direction by air pressure, and the detection system valve is connected to an air source at the same time as the detection valve closes. The air cylinders 19 are arranged in series as much as possible, and the piston 20 fitted into the air cylinders is extended into the exhaust system valve, and the periphery of the locking hole 21 bored at the extending end and the exhaust valve are connected to each other. A gas venting device for an injection molding machine, characterized in that the exhaust valve is held and held in an open state against air pressure by detachably abutting a stepped portion 27e provided on a valve shaft 27a. Exhaust valve locking mechanism.