A pneumatic actuator that converts the pressure energy of compressed gas into mechanical energy in pneumatic transmission. There are two types of cylinders: reciprocating linear motion and reciprocating swing, as shown in the "Cylinder". Cylinders for reciprocating linear motion can be divided into four types: single-acting cylinders, double-acting cylinders, diaphragm cylinders and impact cylinders.
①Single-acting cylinder: There is only one end of the piston rod, the air is supplied from the side of the piston to generate air pressure, and the air pressure pushes the piston to generate thrust to extend, and returns by spring or its own weight.
②Double-acting cylinder: Alternately supply air from both sides of the piston to output force in one or two directions.
③Diaphragm type cylinder: The diaphragm is used instead of the piston, the force is output in only one direction, and the spring is used for reset. It has good sealing performance but short stroke.
④ Impact cylinder: This is a new type of element. It converts the pressure energy of the compressed gas into the kinetic energy of the high-speed (10-20 m/s) motion of the piston, so as to do work.
⑤Rodless cylinder: The general term for cylinders without piston rods. There are two types of magnetic cylinders and cable cylinders.
The cylinder that performs reciprocating swing is called a swing cylinder. The inner cavity is divided into two by the blades, and air is supplied to the two chambers alternately. The output shaft swings, and the swing angle is less than 280 degree . In addition, there are rotary cylinders, gas-hydraulic damping cylinders and stepping cylinders.
