Why can the cylinder frequently reciprocate

Pneumatic actuator that converts the pressure energy of compressed gas into mechanical energy in pneumatic transmission. There are two types of cylinders for reciprocating linear motion and for reciprocating oscillation. Cylinders for reciprocating linear motion can be divided into four types: single-acting, double-acting, diaphragm-type and impact cylinders. Single-acting cylinder: There is a piston rod at only one end, and air is supplied from one side of the piston to generate air pressure. The air pressure pushes the piston to generate thrust and extends, and returns by spring or self-weight.
Double-acting cylinder: Alternate air supply from both sides of the piston, and output force in one or two directions. Diaphragm cylinder: replace the piston with diaphragm, only output force in one direction, and reset with spring. Its sealing performance is good, but the stroke is short. 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) movement of the piston to perform work.
The impact cylinder added a middle cover with a spout and drain. The middle cover and the piston divide the cylinder into three chambers: air storage cavity, head cavity and tail cavity. It is widely used in blanking, punching, crushing and molding and other operations. The reciprocating cylinder is called the swing cylinder. The inner cavity is divided into two by the blade, and the air is alternately supplied to the two cavities.
The output shaft makes a swing motion, and the swing angle is less than 280 °. In addition, there are rotary cylinders, gas-liquid damping cylinders and stepping cylinders. The function of the cylinder: convert the pressure energy of the compressed air into mechanical energy, and the driving mechanism makes linear reciprocating, swinging and rotating motions. Classification of cylinders: linear reciprocating cylinder, oscillating cylinder, air claw, etc.

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