JPS6353903U

JPS6353903U -

Info

Publication number: JPS6353903U
Application number: JP14769286U
Authority: JP
Priority date: 1986-09-29
Filing date: 1986-09-29
Publication date: 1988-04-11

Description

【図面の簡単な説明】第１図は第１実施例の収縮端設定状態を示す模
式図、第２図は第１実施例の伸長過程を示す模式
図、第３図は第１実施例の作動状態を示す線図、
第４図は第２実施例の収縮端設定状態を示す模式
図、第５図は第２実施例の収縮過程を示す模式図
、第６図は第２実施例の伸長過程を示す模式図、
第７図は第３実施例の収縮端設定状態を示す模式
図、第８図は第３実施例の伸長過程を示す模式図
、第９図は第４実施例の収縮端設定状態を示す模
式図、第１０図は第４実施例の収縮過程を示す模
式図、第１１図は第４実施例の伸長過程を示す模
式図、第１２図は第５実施例の収縮端設定状態を
示す模式図、第１３図は第５実施例の収縮過程を
示す模式図、第１４図は第５実施例の伸長過程を
示す模式図、第１５図は第５実施例の作動状態を
示す線図である。１０，２０，３０，４０，５０…空圧シリンダ
装置、１１，２１，３１，４１，５１…ピストン
ロツド、１２，２２，３２，４２，５２…ピスト
ン、１３，２３，３３，４３，５３…シリンダ、
１４，２４，３４，４４，５４…下作動室（作動
室）、１５，２６，３６，４６，５６…空圧源（
流体圧供給源）、１７，３８，４８…切換制御弁
、１８…調圧弁、１９…調圧回路、１１Ａ…作動
子、１９Ａ…リリーフポート、２７…第１切換制
御弁、２８…第２切換制御弁、２９，３９…調圧
弁、２１Ａ，３１Ａ…作動子、４９…制御器、５
７…調圧装置、５９…第２切換制御弁。[Brief Description of the Drawings] Fig. 1 is a schematic diagram showing the contracted end setting state of the first embodiment, Fig. 2 is a schematic diagram showing the extension process of the first embodiment, and Fig. 3 is a schematic diagram showing the extension process of the first embodiment. A diagram showing the operating state,
FIG. 4 is a schematic diagram showing the contraction end setting state of the second embodiment, FIG. 5 is a schematic diagram showing the contraction process of the second embodiment, and FIG. 6 is a schematic diagram showing the extension process of the second embodiment.
FIG. 7 is a schematic diagram showing the contraction end setting state of the third embodiment, FIG. 8 is a schematic diagram showing the extension process of the third embodiment, and FIG. 9 is a schematic diagram showing the contraction end setting state of the fourth embodiment. Fig. 10 is a schematic diagram showing the contraction process of the fourth embodiment, Fig. 11 is a schematic diagram showing the extension process of the fourth embodiment, and Fig. 12 is a schematic diagram showing the contraction end setting state of the fifth embodiment. Fig. 13 is a schematic diagram showing the contraction process of the fifth embodiment, Fig. 14 is a schematic diagram showing the extension process of the fifth embodiment, and Fig. 15 is a diagram showing the operating state of the fifth embodiment. be. 10,20,30,40,50...Pneumatic cylinder device, 11,21,31,41,51...Piston rod, 12,22,32,42,52...Piston, 13,23,33,43,53...Cylinder ,
14, 24, 34, 44, 54... lower working chamber (working chamber), 15, 26, 36, 46, 56... pneumatic source (
fluid pressure supply source), 17, 38, 48... switching control valve, 18... pressure regulating valve, 19... pressure regulating circuit, 11A... actuator, 19A... relief port, 27... first switching control valve, 28... second switching Control valve, 29, 39... Pressure regulating valve, 21A, 31A... Operator, 49... Controller, 5
7...Pressure regulating device, 59...Second switching control valve.

Claims

[Claims for Utility Model Registration] (1) A piston coupled to a piston rod is housed in a cylinder, and a working chamber formed by one surface of the piston and the inner surface of the cylinder is pressurized to set the piston rod at one end of movement, In a fluid pressure cylinder device that sets the piston rod at the other moving end by reducing the pressure in the working chamber, after the working chamber is depressurized and the piston rod is set at the other moving end, the piston rod is moved opposite from the moving end. A fluid pressure cylinder device characterized in that it is provided with a preload applying means that applies a constant preload that is not sufficient to move toward a side moving end. (2) In paragraph 1 of the claims for utility model registration,
The prepressure applying means includes a switching control valve that supplies fluid pressure from a fluid pressure supply source to the working chamber through a pressure regulating circuit when the piston rod is set at the moving end, and a switching control valve that supplies fluid pressure from a fluid pressure supply source to the working chamber through a pressure regulating circuit when the piston rod is set at the moving end. In this state, the relief port of the pressure regulation circuit is closed to pressurize the working chamber, and the relief port of the pressure regulation circuit is closed in a state in which the piston rod begins to move slightly from the moving end to the opposite moving end. A fluid pressure cylinder device comprising: a pressure regulating valve that releases pressure on the working chamber when opened. (3) In paragraph 2 of the claims for utility model registration,
A pressure regulating valve is a fluid pressure cylinder device that is driven by an actuator connected to a piston rod to open and close a relief port of a pressure regulating circuit. (4) In paragraph 1 of the claims for utility model registration,
The prepressure applying means includes a switching control valve that is set to either a connection position that connects the fluid supply source and the working chamber and a cutoff position that cuts off both, and a piston rod that is set at the moving end. a control means for setting the switching control valve in the connecting position and setting the switching control valve in the blocking position under the condition that the piston rod starts to move slightly from the moving end toward the opposite moving end. Pressure cylinder device. (5) In paragraph 1 of the claims for utility model registration,
The prepressure applying means includes a pressure regulator that regulates the fluid pressure of the fluid pressure supply source to obtain a constant fluid pressure that does not cause the piston rod to move, and a pressure regulator that adjusts the fluid pressure of the fluid pressure supply source to obtain a constant fluid pressure that does not cause the piston rod to move. and a switching control valve that supplies the regulated fluid pressure to the working chamber.