JPS6427504U

JPS6427504U -

Info

Publication number: JPS6427504U
Application number: JP12176887U
Authority: JP
Priority date: 1987-08-09
Filing date: 1987-08-09
Publication date: 1989-02-16

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示した流体制御弁
装置の回路図、第２図は本考案の他実施例を示し
た回路図、第３図は従来例を示した回路図である
。１５……流体シリンダ（流体アクチユエータ）
、１６，１７，１８，１９，５３，５４……ポペ
ツト弁体、２３……パイロツト切換弁、２６，２
７，３１，３２……作用室、２８，３３……パイ
ロツト流路、４９，５０……逆止弁、４５，４６
……絞り弁（絞り手段）、４７，４８……リリー
フ弁（圧力制御弁）、Ｐ１……供給流路、Ａ１，
Ｂ１……負荷流路、Ｒ１……排出流路。 Fig. 1 is a circuit diagram of a fluid control valve device showing one embodiment of the present invention, Fig. 2 is a circuit diagram showing another embodiment of the invention, and Fig. 3 is a circuit diagram showing a conventional example. . 15...Fluid cylinder (fluid actuator)
, 16, 17, 18, 19, 53, 54... Poppet valve body, 23... Pilot switching valve, 26, 2
7, 31, 32... Action chamber, 28, 33... Pilot flow path, 49, 50... Check valve, 45, 46
... Throttle valve (throttle means), 47, 48 ... Relief valve (pressure control valve), P1 ... Supply channel, A1,
B1...Load flow path, R1...Discharge flow path.

Claims

[Scope of utility model registration request]

The supply channel for supplying pressure fluid and the two load channels connected to the fluid actuator are provided so as to communicate with each other and are cut off, and the pilot fluid flows into the working chamber formed on the back to perform the blocking operation and also to remove the fluid in the working chamber. By flowing out to the low pressure side, communication is cut off between the two poppet valve bodies, which are operated in communication by the pressing action of the pressure fluid from the supply flow path, and the two load flow paths and the discharge flow path that connects to the low pressure side. Two poppet valve bodies are provided so as to perform a blocking operation by allowing pilot fluid to flow into a working chamber formed at the back, and also allow fluid in the working chamber to flow out to the low pressure side when communicating.
A pilot switching valve is formed on the back of each poppet valve body to allow pilot fluid to flow into the action chamber and to allow fluid in the action chamber to flow out to the low pressure side, and at least one of the valves to cut off communication between the supply flow path and the load flow path. A throttling means is connected to the working chamber and the supply channel on the back of the poppet valve body, and controls a part of the pressure fluid in the supply channel to be constricted as a pilot fluid to flow into the working chamber, and the supply channel and the load channel. a pressure control valve provided to allow fluid in the working chamber to flow out to the pilot switching valve side at a set pressure to a pilot flow passage connecting the working chamber on the back of the at least one poppet valve body and the pilot switching valve; , is installed in the pilot flow path in parallel with the pressure control valve to allow pilot fluid to flow into the working chamber from the pilot switching valve side and to prevent fluid in the working chamber from flowing out to the pilot switching valve side. A fluid control valve device comprising a check valve.