The working principle of aluminum alloy cylinder

The single-acting cylinder has only one cavity where compressed air can be input to achieve movement in one direction. Its piston rod can only be pushed back by external force; usually by means of spring force, diaphragm tension, gravity, etc. Its principle and structure: Single-acting cylinder 1-cylinder; 2-piston; 3-spring; 4-piston rod; the characteristics of single-acting cylinder are:

1) Only one end of the air inlet (exhaust), the structure is simple, the air consumption is small.

2) Reset by spring force or diaphragm force, and part of the compressed air energy is used to overcome the spring force or diaphragm tension, thus reducing the output force of the piston rod.

3) Springs, diaphragms, etc. are installed in the cylinder. Generally, the stroke of the stainless steel pressure vessel is shorter; compared with the double-acting cylinder of the same volume, the effective stroke is smaller.

4) The tension of the cylinder return spring and the diaphragm changes with the deformation, so the output force of the piston rod changes during the traveling process. Due to the above characteristics, single-acting piston cylinders are mostly used for short strokes. Its thrust and movement speed are not high requirements, such as air hoisting, positioning and clamping devices. This is not the case with single-acting plunger cylinders, which can be used in applications with long strokes and high loads.

2

Double acting aluminum alloy cylinder

Double-acting cylinder refers to a cylinder in which compressed air can be input into two chambers respectively to realize bidirectional movement. Its structure can be divided into aluminum pressure vessel double piston rod type, single piston rod type, double piston type, buffer type and non-buffer type. This type of cylinder is the most widely used.

1) Double piston rod double acting cylinder The double piston rod cylinder has two types: cylinder body fixed and piston rod fixed. When the cylinder block is fixed, the load it carries (such as the workbench) is integrated with the two piston rods of the cylinder, and the compressed air enters the two chambers of the cylinder in turn (one for air intake and the other for exhaust), and the piston rod drives the worktable to move left and right. The range of motion of the table is equal to 3 times its effective travel. The installation takes up a lot of space and is generally used on small equipment. When the piston rod is fixed, in order to facilitate the connection of the separate cylinder pipelines, the piston rod is made hollow, the cylinder body and the load (table) are integrated into one, and the compressed air enters the two cavities of the cylinder from the left or right end of the hollow piston rod, so that the cylinder body drives The table moves to the left or to the left, and the motion range of the table is twice its effective stroke s. Suitable for medium and large equipment. Double piston rod double acting cylinder cylinder block fixed; piston rod fixed cylinder block; workbench; piston; piston rod; frame. The double piston rod cylinder has the same piston rod diameter at both ends, so the force area on both sides of the piston is equal. When the input pressure and flow rate are the same, the output force and speed of the reciprocating motion of the air separation vessel are equal.

2) Buffer cylinder For the cylinder with high speed near the end of the stroke, if necessary measures are not taken, the piston will hit the end cover with a large force (energy), causing vibration and damage to the parts. In order to make the piston move smoothly at the end of the stroke without shock. A buffer device is added at both ends of the cylinder, which is generally called a buffer cylinder. The buffer cylinder is mainly composed of a piston rod, a piston, a buffer plunger, a one-way valve, a throttle valve, and an end cover. Its working principle is: when the air filter piston moves to the right under the push of compressed air, the gas in the right chamber of the cylinder is discharged through the plunger hole and the air hole on the cylinder head. When the piston moves close to the end of the stroke, the buffer plunger on the right side of the piston blocks the plunger hole, and when the piston continues to move to the right, the remaining gas sealed in the right chamber of the cylinder is compressed and slowly discharged through the throttle valve and the air hole , if the pressure energy generated by the compressed gas is balanced with all the energy of the piston movement, the buffer effect will be achieved, so that the piston moves smoothly at the end of the stroke, and the air purification equipment does not produce impact. By adjusting the opening of the throttle valve, the amount of exhaust gas can be controlled, thereby determining the pressure in the compressed volume (called the buffer chamber) to adjust the buffer effect. If the piston moves in the opposite direction, input compressed air from the air hole to directly open the one-way valve and push the piston to the left. If the opening of the throttle valve is fixed and cannot be adjusted, it is called an unadjustable buffer cylinder. Buffer cylinder piston rod; piston; buffer plunger; plunger hole; one-way valve throttle valve; Take measures to achieve the purpose of buffering.

3

Combination cylinder

The combined cylinder generally refers to the gas-liquid damping cylinder, the gas-liquid booster cylinder, etc. formed by the combination of the cylinder and the hydraulic cylinder. As we all know, the working medium usually used in the cylinder is compressed air, which is characterized by fast action, but the speed is not easy to control. Generally considered incompressible hydraulic oil, its characteristic is that the action is not as fast as the cylinder, but the conditions and speed of Canadian immigrants are easy to control. Combining the air cylinder and the hydraulic cylinder ingeniously to make up for the shortcomings, it becomes the air-hydraulic damping cylinder commonly used in the pneumatic system. The working principle of air-hydraulic damping cylinder. In fact, the cylinder and the hydraulic cylinder are connected in series, and the two pistons are fixed on the same piston rod. The hydraulic cylinder does not need a pump to supply oil, as long as it is full of oil, a hydraulic check valve, a throttle valve and an oil filling cup are installed between its inlet and outlet. When air is supplied from the right end of the cylinder, the cylinder overcomes the load and drives the piston of the hydraulic cylinder of the safety cabinet to move to the left (exhaust from the left end of the cylinder). At this time, the oil is discharged from the left end of the hydraulic cylinder, the check valve is closed, and the oil can only flow into the right of the hydraulic cylinder through the throttle valve. In the cavity and the oil cup, if the throttle valve port is opened larger at this time, the oil discharge from the left chamber of the hydraulic cylinder will be smooth, and the movement speed of the two pistons will be faster. The oil discharge is blocked, and the movement speed of the two pistons will be slowed down. In this way, by adjusting the opening size of the throttle valve, the movement speed of the piston can be controlled. It can be seen that the output force of the gas-liquid damping cylinder should be the difference between the force (push or pull) generated by the compressed air in the cylinder and the damping force of the oil in the hydraulic cylinder.

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. Cylinders for reciprocating linear motion can be divided into four types: single-acting, double-acting, diaphragm type and impact cylinders.

①Single-acting cylinder

There is only one end of the piston rod, the gas is supplied from one side of the piston to gather energy to generate air pressure, and the air pressure pushes the piston to generate thrust to extend and return by the spring or its own weight.

②Double-acting cylinder

Air is supplied alternately from both sides of the piston, delivering force in one or both directions.

③Diaphragm cylinder

Replace the piston with a diaphragm, output force in only one direction, and return it with a spring. 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 perform work. The shock cylinder adds a mid-cap with jet and bleed ports. The middle cover and the piston divide the cylinder into three chambers: the air storage chamber, the head chamber and the tail chamber. It is widely used in various operations such as blanking, punching, crushing and forming. The cylinder that swings back and forth 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°. In addition, there are rotary cylinders, gas-hydraulic damping cylinders and stepping cylinders.

　　MAL series aluminum alloy mini pneumatic air cylinder

　　It is an aluminium alloy pneumatic air cylinder with bore sizes of 6mm, 12mm, and 16mm. It has a double-action air system to maintain the output pressure. It is ideal for tight spaces. The compact thin design is ideal for installation and maintenance in small areas. The cylinder is lubrication-free, making it ideal for small spaces.

　　The material used to produce a pneumatic air cylinder is often made from aluminum, nickel-plated brass, or steel. The material selection is based on the load, temperature, and stroke length of the pneumatic cylinder, and on the type of application it will be used for. A few common designs are described below. First, there's the basic industrial cylinder, which has an internal piston and attaches to a machine. A second design option is a high-grade steel cylinder, which has a high strength-to-weight ratio.

　　Aluminum cylinders are strong and lightweight, but are also corrosion-resistant and weatherproof. They come in NFPA-standard C Series and non-rotating dual rod D Series. Both of these designs are ideal for pneumatic equipment and are available in a variety of stroke specifications. Aluminium cylinders are lightweight and durable, which makes them ideal for portable devices. You can also choose from a wide range of stroke specifications and configurations to meet your specific needs.

　　Double-acting pneumatic cylinders are designed for pushing loads. Their materials vary in resistance to pressure and temperature. Single-acting pneumatic cylinders are mostly used in the automotive industry and hydraulic rams. Their material composition also depends on the type of application. Rodless pneumatic cylinders are used for space-saving purposes and are often made of sturdy material. They can even replace a hydraulic cylinder in specific applications. Dimensions