JPS6277381U

JPS6277381U -

Info

Publication number: JPS6277381U
Application number: JP16810585U
Authority: JP
Priority date: 1985-10-31
Filing date: 1985-10-31
Publication date: 1987-05-18
Anticipated expiration: 2000-10-31
Also published as: JPH0512545Y2

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の一部縦断正面図、第
２図は同上パイロツト弁の縦断正面図、第３図は
本考案の実施例の作動説明図、第４図は従来の真
空圧制御弁の作動説明図、第５図は先行技術の作
動説明図である。３……吸着パツド、４……真空源、５……圧力
空気源、２０……主弁、２２……供給ポート、２
３……出力ポート、２４……真空圧ポート、２５
……供給弁部、２６……真空圧弁部、２７……駆
動部、５０……パイロツト弁、５１，５２……切
換弁、５５……スプール、５７，５８……圧力室
。 Fig. 1 is a partially longitudinal front view of an embodiment of the present invention, Fig. 2 is a longitudinal sectional front view of the same pilot valve, Fig. 3 is an explanatory diagram of the operation of the embodiment of the invention, and Fig. 4 is a conventional vacuum pressure FIG. 5 is an explanatory diagram of the operation of the control valve, and FIG. 5 is an explanatory diagram of the operation of the prior art. 3... Suction pad, 4... Vacuum source, 5... Pressure air source, 20... Main valve, 22... Supply port, 2
3...Output port, 24...Vacuum pressure port, 25
... Supply valve section, 26 ... Vacuum pressure valve section, 27 ... Drive section, 50 ... Pilot valve, 51, 52 ... Switching valve, 55 ... Spool, 57, 58 ... Pressure chamber.

Claims

[Claims for Utility Model Registration] A vacuum pressure control valve comprising a main valve and a pilot valve for driving the main valve, the main valve having an output port communicating with a suction pad at a first switching position. a valve part that communicates with a vacuum pressure port that communicates with a source of waste, and that switches and communicates the output port with a supply port that communicates with a source of pressurized air in a second switching position, and a drive unit that performs the switching operation; The valve is provided with a pair of switching valves for supplying pressure fluid that switches and drives the valve member by acting on the valve member in the pressure chamber, and the pilot valve is provided with a pair of switching valves for supplying pressure fluid that switches and drives the valve member by acting on the valve member in the pressure chamber; When the valve member is in the first switching position due to the supply of fluid pressure to one pressure chamber, the flow supplying pilot fluid pressure to the drive unit of the main valve to switch the valve part to the first switching position. and a flow path that communicates the flow path with the pressure chamber, and when the valve member is in the second switching position due to the operation of the seventh switching valve, the valve portion is connected to the drive portion of the main valve. A vacuum pressure control valve characterized in that a flow path is provided for supplying pilot fluid pressure for switching the valve to a second switching position.