Pneumatic component (Pneumatic parts) is the element that does work through the pressure of the gas or the force generated by expansion. It is the component that converts the elastic energy of compressed air into kinetic energy such as PNEUMATIC CYLINDER,PNEUMATIC GRIPPER, etc.The working mode of pneumatic components is power transmission，also as an energy conversion device, using gas pressure to transfer energy
ADVANTAGES
Pneumatic device is simple in structure, light, easy to install and maintain.The working medium of pneumatic device is air, which is not easy to burn and safer to use than hydraulic medium.
Working medium is inexhaustible air, air itself does not cost money.AIR PREPARATION UNIT is simple to handle, does not pollute the environment and has low cost.
It is very easy to adjust the output power and working speed.Cylinder movement speed is generally less than 1M/S, faster than the hydraulic and electrical mode of movement speed.
High reliability and long service life.The effective action times of electrical components are about one million, and the general SOLENOID VALE can be more than 30 million times according to the PNEUMATIC protective measures,Some excellent quality valves even exceed 200 million times.
The compressibility of air can be used to store energy and realize centralized air supply.It can release energy in short time to obtain high speed response in intermittent movement.Buffering can be implemented.Strong adaptability to shock load and overload.Under certain conditions, the pneumatic device can have self - retaining capability.
6、Full pneumatic control with fire, explosion - proof, moisture - proof. Compared with hydraulic mode, pneumatic mode can be used in high temperature occasions.
7. Compressed air can be supplied centrally and transported long distance.
8. Because of its energy-saving, pollution-free, high efficiency, low cost, safe and reliable, simple structure and other advantages, it is widely used in various machinery and production lines.
DISADVANTAGES
Because of the compressibility of air, the speed of the cylinder is subject to changes in load.The gas-liquid linkage method can overcome this defect.
When the cylinder moves at low speed, its stability at low speed is not as good as that of the hydraulic cylinder due to the large proportion of friction in thrust.
Although in many applications, the output force of the cylinder can meet the working requirements, but its output force is smaller than that of the hydraulic cylinder.
Pneumatic technology is a kind of technology that uses compressed air as the medium to drive and control machinery.Because of its energy-saving, pollution-free, high efficiency, low cost, safe and reliable, simple structure and other advantages, it is widely used in various machinery and production lines
DEVELOPMENT
The expansion of the application of pneumatic technology is a symbol of the development of pneumatic industry.Specially developed pneumatic components are used for railway turning switches, locomotive wheel and rail lubrication, train brakes, street cleaning, lifting equipment in special workshops, military command vehicles, etc.This shows that pneumatic technology has "penetrated" into all walks of life, and is expanding.
Pneumatic technology is increasingly used in various industries due to the automatic assembly and automatic processing of small, special items of equipment, the original traditional pneumatic components are constantly improving performance, and gradually developed to meet the market requirements of new products, make the pneumatic components of the varieties increased, its developing tendency mainly has the following several aspects,
It's smaller, it's lighter, it uses less power.In the manufacturing industry of electronic components and pharmaceuticals, the small size of the workpiece is bound to limit the size of pneumatic parts. Miniaturization and lightness are the first development direction of pneumatic components.
Air source treatment assembly (F.R.L), most of which adopt the building block structure at home and abroad, is not only compact in size, but also convenient in combination and maintenance.
Positioning accuracy of implementation components (PNEUMATIC CYLINDER, PNEUMATIC GRIPPER) is improved, with increased rigidity, accurate piston positioning and more convenient usage.In order to improve the positioning accuracy of the cylinder, the cylinder with braking function and servo function is used more and more commonly.The cylinder with servo function can obtain ±0.1mm positioning accuracy even if the air supply pressure changes
Cylinder cylinder shape is no longer limited to round, but square, union jack shape or other shapes.The engineer has opened a guide slot, sensor and switch installation slot on the surface of the cylinder block, making it more convenient for users to install and use.
Multifunctional, complex.In order to meet the needs of the market, a variety of small pneumatic systems composed of multiple pneumatic parts and equipped with control devices have been developed. For example, a component for moving small items is a combination of two cylinders with a guide along the X-axis and the Z-axis.The assembly can carry 3kg weight, equipped with solenoid valve and program controller, compact structure, small space, adjustable travel.
Another example is the loading and unloading module, which has seven modules with different functions. It can complete the loading and unloading operation on the precision assembly line, and different modules can be combined arbitrarily according to the operation content.There is also a manipulator by the shape of small and can change the swing Angle of the swing cylinder and chuck assembly, clamp head has a number of shapes can be selected.
Pneumatic components are used in many occasions, such as rolling mill, textile assembly line, etc., the working process can not be interrupted because of the quality of pneumatic components, otherwise it will cause huge losses, so the reliability of pneumatic components work is very important.
Oil-free lubrication technology is widely used. Due to environmental pollution and the requirements of electronic, medical, food and other industries, oil is not allowed in the production environment, so oil-free lubrication is the development trend of pneumatic parts.Oil mist on the European market has been eliminated, the general use of oil-free lubrication has been placed. At the same time, oil-free lubrication can simplify the system
In addition, to meet certain special requirements, deodorant, sterilizing and precision filters are being developed with filtration accuracy of 0.1~0.3 m and filtration efficiency of 99.9999%.
Pneumatic seals made of polytetrafluoroethylene as the main body can be heat (260℃), cold (-55℃) and wear-resistant, its use occasions are increasing.
In order to improve the quality, new technologies such as vacuum die casting and hydrogen/oxygen explosion deburring are gradually popularized in the manufacturing of pneumatic components.
From the above development direction of pneumatic technology, we can see that we have a lot of work to do in the development of pneumatic products.Any pneumatic component factory, even if its size is not large, as long as a breakthrough in one aspect, and maintain the leading technology, can occupy a place in the market, in the fierce competition to obtain survival and development.
