Abstract: A pneumatic device selection system includes a standard circuit selection processor for selecting a cylinder operating system based on input data, an independent characteristic calculation processor for calculating characteristics of the cylinder operating system based on entered usage conditions, a branching and joining circuit processor for selecting a branching and joining circuit based on input data and calculating characteristics of the selected branching and joining circuit, a manifold circuit processor for selecting a manifold circuit based on input data and calculating characteristics of the selected manifold circuit, and a shock absorber selection processor for selecting a shock absorber based on input data and/or a selection result from the standard circuit selection processor.

Abstract: The present system includes a standard circuit selection processing means for selecting a cylinder operating system based on input data, and independent characteristic calculation processing means for calculating characteristics of the cylinder operating system based on entered usage conditions, a branching and joining circuit processing means for selecting a branching and joining circuit based on input data and calculating characteristics of the selected branching and joining circuit, a manifold circuit processing means for selecting a manifold circuit based on input data and calculating characteristics of the selected manifold circuit, and a shock absorber selection processing means for selecting a shock absorber based on input data and/or a selection result from the standard circuit selection processing means.

Abstract: A pneumatic device selection system has a computer, first through sixth databases connected to the computer and storing data of at least pneumatic devices, a coordinate input unit and a keyboard connected to the computer, for entering input data based on an input action of an operator into the computer, and a display unit connected to the computer, for displaying information from the computer. The pneumatic device selection system functionally has a first selection processor for selecting a cylinder operating system based on input data from the coordinate input unit or the like, and a second selection processor for selecting a shock absorber based on input data from the coordinate input unit or the like and/or a selection result from the first selection processor.

Abstract: A stroke time of a piston from excitation of a solenoid valve for driving the piston of a pneumatic cylinder to arrival at an end position thereof and a velocity of the piston at the arrival of the piston at the end position are determined by a simulation calculating unit for several load rates of the pneumatic cylinder for a plurality of determined combinations of the solenoid valve, a speed controller, the pneumatic cylinder, and tubes for connecting therebetween. The stroke time and velocity of the piston determined by the simulation calculating unit for each of the load rates for each of the plurality of combinations are displayed in a superimposed manner on a display unit with a display control means based on a stroke of the pneumatic cylinder.

Abstract: A pneumatic device selection system has a computer, first through sixth databases connected to the computer and storing data of at least pneumatic devices, a coordinate input unit and a keyboard connected to the computer, for entering input data based on an input action of an operator into the computer, and a display unit connected to the computer, for displaying information from the computer. The pneumatic device selection system functionally has a first selection processor for selecting a cylinder operating system based on input data from the coordinate input unit or the like, and a second selection processor for selecting a shock absorber based on input data from the coordinate input unit or the like and/or a selection result from the first selection processor.

Abstract: A method of selecting devices for use in a fluid pipeline network, wherein items of data concerning devices are stored in a pipe database, a pipe joint database and a valve database, and calculating equations for use in computation are also stored. Devices are temporarily selected by using the stored device data, and then computation is performed by using the stored calculating equations, thereby allowing device selection to be made easily. In addition, a block diagram of the fluid pipeline network can be made easily.

Abstract: A stroke time of a piston from excitation of a solenoid valve for driving the piston of a pneumatic cylinder to arrival at an end position thereof and a velocity of the piston at the arrival of the piston at the end position are determined by a simulation calculating unit for several load rates of the pneumatic cylinder for a plurality of determined combinations of the solenoid valve, a speed controller, the pneumatic cylinder, and tubes for connecting therebetween. The stroke time and velocity of the piston determined by the simulation calculating unit for each of the load rates for each of the plurality of combinations are displayed in a superimposed manner on a display unit with a display control means based on a stroke of the pneumatic cylinder.

Abstract: Calculation for determining the optimal nozzle diameter and nozzle immediately upstream pressure for minimizing the compressed air consumption flow rate is facilitated. The nozzle diameter, work distance, and nozzle immediately upstream pressure or blow impact pressure in the present state are inputted as present state values. The compressed air consumption flow rate and the blow impact pressure or the nozzle immediately upstream pressure are computed from the present state values. An improvement value of the nozzle diameter or the nozzle immediately upstream pressure is inputted on the basis of a judgment on the computation results. The compressed air consumption flow rate and the nozzle immediately upstream pressure or the nozzle diameter are computed from the improvement value a necessary number of times. Thus, a nozzle diameter and a nozzle immediately upstream pressure that provide the lowest compressed air consumption flow rate are selected.

Abstract: A method of selecting pneumatic devices that satisfy specified load, speed and strength conditions to construct a pneumatic system. Data concerning pneumatic actuators, solenoid-controlled selector valves, drive controllers, pipes, pipe joints and exhaust treatment devices is stored in a pneumatic actuator database, a solenoid-controlled selector valve database, a drive controller database, a pipe database, a pipe joint database and an exhaust treatment device database, respectively, for each item number, and conditions required for pneumatic devices constituting a system are calculated. Then, pneumatic devices conforming to the calculated conditions are selected from the respective databases. At the first step, a pneumatic actuator satisfying a load condition, a strength condition and a speed condition is selected from the pneumatic actuator database on the basis of a calculation according to a basic equation.

Abstract: There is described a fluid pressure booster including a pair of cylinders connected to the opposite sides of a central partition wall of a casing with an inlet port, an outlet port and air exhaust ports, a pair of pistons reciprocable in the cylinders and defining a boosting chamber and a drive chamber in each cylinder, and a switch valve adapted to supply a line air pressure alternately to the drive chambers of the two cylinders, thereby reciprocating the pistons to intensify the fluid pressure in the boosting chambers. The switch valve of the booster is provided with a spool stall preventive means which is arranged to suppress the pressing force on the valve body of the switch valve with the fluid pressure or biasing action of a spring until the valve body reaches the neutral position thereof and to encourage the pressing action on the valve body with a biasing force after reaching the neutral position to prevent stalls of the valve body at that position.

Abstract: There is described a fluid pressure booster including a pair of cylinders connected to the opposite sides of a central partition wall of a casing with an inlet port, an outlet port and air exhaust ports, a pair of pistons reciprocable in the cylinders and defining a boosting chamber and a drive chamber in each cylinder, and a switch valve adapted to supply a line air pressure alternately to the drive chambers of the two cylinders, thereby reciprocating the pistons to intensify the fluid pressure in the boosting chambers. The switch valve of the booster is provided with a spool stall preventive means which is arranged to suppress the pressing force on the valve body of the switch valve with the fluid pressure or biasing action of a spring until the valve body reaches the neutral position thereof and to encourage the pressing action on the valve body with a biasing force after reaching the neutral position to prevent stalls of the valve body at that position.

Abstract: A cylinder driving apparatus, wherein a head chamber and a rod chamber of a cylinder for driving a load upwardly and downwardly are communicated with a pressure accumulation tank by way of a balance pipeway equipped with an electromagnetic proportional flow control valve and a recycling pipeway equipped with a pressure control valve mechanism, respectively, and the load is driven by feeding air at reduced pressure to the rod chamber or discharging it to the external atmosphere by way of the pressure control valve mechanism while applying air pressure into the head chamber of the cylinder against the load by way of the electromagnetic proportional flow control valve for adjusting the driving speed.

Abstract: A cylinder driving system comprising balance cylinders communicated to an accumlator for supporting a load under balanced state, a drive cylinder of a small diameter connected by way of a switching control device to an air source for driving the load with reduced air consumption and a speed controller provided either to the balance cylinders or to the drive cylinder for switching the load driving speed between high and low speeds.

Abstract: In a spool-sleeve type change-over valve, the axial width of the intake passage is reduced relative to that of the discharge passage within a range in which the same cylinder response as attained by intake and discharge passages of the same axial width is retained.

Abstract: A poppet type change-over valve assembly suitable for switching a fluid flow direction and capable of dealing with a large fluid flow with a small valve displacement and small valve operating force. The valve assembly characteristically comprises an annular float valve which is loosely mounted around a main valve body and has parallel or concentric outer and inner sealing edges for engagement with conical valve seats which are formed on the main valve body and an inner wall surface of the valve casing. The annular float valve is adapted to be tightly held between the conical valve seats of the main valve body and the valve casing by cooperation of the main valve body and a fluid pressure prevailing in the valve chamber when the valve is switched to a desired change-over position thereby establishing a tight seal around the main valve body for connecting a fluid inlet port with a selected fluid output port of the valve.