HIGH SPEED DRIVING METHOD AND ITS APPARATUS FOR PRESSURE CYLINDER

Japanese Patent JP3851137

B2

PROBLEM TO BE SOLVED: To provide a high speed driving method and its apparatus for a pressure cylinder capable of swiftly eliminating a wasteful working stroke of a piston rod and a driving lag of the piston rod and improving working efficiency.
SOLUTION: A servo valve 41 is used as a valve for stroking a piston 12 of a pressure cylinder 1, and the servo valve 41 is functioned at a projecting stroke of the piston rod 13 as a selector valve. In a returning stroke of a piston rod 13, the servo valve 41 is operated by power output of a controlling device 8 removing difference with a designated position inputted to the controlling device, so that output of a position detecting unit 20 of the piston rod 13 attached to the pressure cylinder 1 is fed back to the controlling device of the servo valve 41. When the piston rod 13 is returned to the designated position, both sides of pressure chambers 30 and 35 are maintained in a state in which same pressure is practically charged.

Yang Qinghai
Nobuhiro Fujiwara
Daisuke Matsumoto

JP2001329479A

November 29, 2006

October 26, 2001

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SMC Corporation

B23K11/11; F15B11/06; B23K11/24; F15B15/22; B23K11/31; F15B9/09; F15B11/046; F15B11/048; F15B11/15; (IPC1-7): F15B11/06; F15B11/15; F15B15/22; //B23K11/11; B23K11/24

JP6323302A
JP9217704A
JP62177301A
JP11002203A
JP6106358A
JP3008232U
JP433597Y1
JP2065488U
JP8309552A
JP9250505A
JP2002250307A

Hiroshi Hayashi
Masahiko Goto
Hayashi Naoki

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