Patent ID: 6981440

Claim:
A high-speed cylinder apparatus comprising a machine bed( 11 ) which is comprised of a front stationary table( 12 ), a front stationary member ( 13 ), a rear stationary member ( 14 ) and a rear stationary table ( 15 ), arranged in this order, stationary rods ( 18 ) which are secured between the front stationary member and the rear stationary member, and a movable cylinder ( 20 ) through which the stationary rods extend, said movable cylinder being provided with an inner cylinder chamber ( 21 ) and an outer cylinder chamber ( 31 ) which surrounds the inner cylinder chamber, said inner cylinder chamber being provided with an inner piston ( 22 ) inserted therein, which is integrally secured to the stationary rods, said inner cylinder chamber being provided with an inner front inlet ( 25 ), an inner rear inlet ( 26 ), an inner rear outlet ( 27 ) and an inner front outlet ( 28 ), for working fluid to move the movable cylinder, said outer cylinder chamber being provided therein with an outer piston ( 32 ) having a front operation member ( 33 ) which is moved close to or away from the front stationary table and a rear operation member ( 34 ) which is moved close to or away from the rear stationary table, said outer cylinder chamber being provided with an outer rear inlet ( 35 ) which is connected to the inner rear outlet and an outer front inlet ( 36 ) which is connected to the inner front outlet, for the working fluid to move the outer piston.