JPS6351167U

JPS6351167U -

Info

Publication number: JPS6351167U
Application number: JP14471586U
Authority: JP
Priority date: 1986-09-19
Filing date: 1986-09-19
Publication date: 1988-04-06

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の構成を示す断面図
、第２図は第１及び第２バルブの拡大断面図、第
３図は第１バルブの作動状態を示す断面図、第４
図は第２バルブの作動状態を示す断面図、第５図
はアクチユエータ内の圧力変化を示すグラフであ
る。１：シリンダ、２：隔壁、３ａ，３ｂ：シリン
ダ室、４ａ，４ｂ：ピストン、５：透孔、６：ピ
ストンロツド、１１，１３：逆止弁、１２：吐出
口、１４：エア圧送源、２０：方向切換弁、２５
ａ：第１バルブ、２５ｂ：第２バルブ、２８ａ，
２８ｂ：弁体（接触子）、４４：連通孔、５０：
アクチユエータ。 FIG. 1 is a sectional view showing the configuration of an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the first and second valves, FIG. 3 is a sectional view showing the operating state of the first valve, and FIG.
The figure is a sectional view showing the operating state of the second valve, and FIG. 5 is a graph showing pressure changes within the actuator. 1: Cylinder, 2: Partition, 3a, 3b: Cylinder chamber, 4a, 4b: Piston, 5: Through hole, 6: Piston rod, 11, 13: Check valve, 12: Discharge port, 14: Air pressure source, 20 : Directional switching valve, 25
a: first valve, 25b: second valve, 28a,
28b: Valve body (contact), 44: Communication hole, 50:
Actuator.

Claims

[Scope of utility model registration request]

The interior of the cylinder is divided into two cylinder chambers by a partition wall in the center, a piston is fitted into each cylinder chamber, and a piston rod is hermetically inserted into a through hole formed in the partition wall, and both ends of the piston rod are inserted into the two cylinder chambers. connected to each piston, each space inside the piston in each cylinder chamber is connected to an air pressure supply source and a discharge port via a check valve, and each space outside the piston in each cylinder chamber is connected to an air pressure source and a discharge port through a check valve. , connected to the air pressure supply source via a pneumatically driven directional switching valve that switches depending on the level of pressure acting on the pneumatic actuator, and by switching the directional valve, the outside of the piston in the cylinder chamber is By alternately supplying air to both spaces and moving the piston in alternate directions by constant strokes, the air in both spaces inside the piston in the cylinder chamber is alternately pressurized and discharged from the discharge port. In the pressurized air supply device, a valve is opened when the piston comes into contact with a contact on a corresponding surface of the partition wall facing one of the pistons, and the pressurized air in the space inside the piston is supplied to a supply path. A first valve is installed to supply power to the actuator of the directional control valve through the valve, and a pressure inside the actuator is set to a predetermined value by opening the first valve. When the pressure is exceeded, the valve opens to open the supply path to the atmosphere to maintain the pressure inside the actuator at a predetermined value, and when the piston comes into contact with the contact, the valve opens to open the supply path to the atmosphere. A pressurized air supply device characterized in that a second valve is installed for discharging air in the actuator of the directional control valve to the atmosphere.