Although China's pneumatic industry has reached a certain scale and technical level, but compared with the international advanced level, the gap is very big. The output value of pneumatic products in China only accounts for 1.3% of the world's total output value, only 1/21 of the United States, 1/15 of Japan, 1/8 of Germany. this is very disproportionate to a large country with more than 1 billion people. From the variety, a Japanese company has 6500 varieties, China only 1/5 of it. product performance and quality level of the gap is also very large.

As pneumatic technology is increasingly used in the automatic assembly of various industries and automatic processing of small pieces, special items of equipment, the original traditional pneumatic components performance is constantly improving, while successively developing new products to meet market requirements, so that the variety of pneumatic components is increasing, the development trend is mainly the following aspects:

Smaller size, lighter weight, lower power consumption. In the electronic components, pharmaceuticals and other manufacturing industries, due to the small size of the processed parts, is bound to limit the size of the pneumatic components, miniaturization, light is the first development direction of pneumatic components. Foreign countries have developed only thumb size, effective cross-sectional area of 0.2mm2 of ultra-small solenoid valve. Can develop a small form factor and a larger flow of components more ideal. To this end, the same size of the valve, the flow rate has increased by 2 to 3.3 times. There is a series of small solenoid valve, the valve body is only 10mm wide, the effective area of up to 5mm2; 15mm wide, the effective area of 10mm2, etc..

Foreign solenoid valve power consumption has reached 0.5W, will be further reduced to adapt to the combination with microelectronics.

Gas source processing components, most of the domestic and foreign block structure, not only compact size, and combined, maintenance are very convenient.

The positioning accuracy of the actuator is improved, the stiffness is increased, the piston rod does not rotate, more convenient to use. In order to improve the positioning accuracy of the cylinder, with brake mechanism and servo system cylinder application is becoming more and more common. With the servo system cylinder, even if the supply pressure and the load change, can still get ± 0.1mm positioning accuracy.

In the international exhibition, a variety of shaped section cylinder barrel and piston rod of the cylinder, this type of cylinder because the piston rod will not rotate, when applied to the host, without additional guide device to maintain a certain accuracy. In addition, there are also developed with a number of various guide mechanism of the cylinder and cylinder slide assembly, such as two guide rod cylinder, double piston rod double cylinder cylinder, etc..

Cylinder shape is no longer limited to round, but square, beige or other shapes, in the profile of the guide groove, sensors and switch mounting slot, etc., so that the user installation and use more convenient.

Multi-functionalization and compounding. In order to facilitate users and meet the needs of the market, we have developed various small pneumatic systems which are combined by multiple pneumatic components and equipped with control devices. For example, the assembly for moving small items is a combination of two cylinders with guides in X-axis and Z-axis respectively. The assembly can move 3kg heavy objects, with solenoid valve, programmable controller, compact structure, occupy little space, stroke can be adjusted. Another example is a loading and unloading module, there are seven different functions of the module form, can complete the precision assembly line on the loading and unloading operations, according to the work content of different modules can be any combination. There is also a robot is a small shape and can change the swing angle of the swing cylinder and the combination of the collet, the collet part has a number of optional collets.

Combined with electronic technology, the use of a large number of sensors, pneumatic components intelligent. With the switch cylinder domestic has been commonly used, switch volume will be smaller, higher performance, can be embedded in the cylinder block; some also with two-color display, can show the position error, so that the system is more reliable. With sensors instead of flow meters, pressure gauges, automatic control of compressed air flow, pressure, can save energy and ensure the normal operation of the device. Pneumatic servo positioning system has products into the market. The system uses a three-way five-way pneumatic servo valve to compare the predetermined positioning target with the detection data of the position sensor and implement negative feedback control. The maximum speed of the cylinder up to 2m / s, stroke 300mm, the system positioning accuracy ± 0.1mm. Japan has successfully piloted a new intelligent solenoid valve, this valve with a sensor logic circuit, is the product of the combination of pneumatic components and optoelectronics technology. It can directly accept the signal from the sensor, when the signal meets the specified conditions, without the external controller, you can complete the action by itself to achieve control purposes. It has been applied to the conveyor belt of objects, which can identify the size of the handled objects, so that the large pieces are sent down directly and the small pieces are diverted.

Higher safety and reliability. As can be seen from the international standards for pneumatic technology, the standards not only put forward interchangeability requirements, and emphasize safety.

Pneumatic components of many use occasions, such as rolling mill, textile assembly line, etc., in the working time can not be interrupted because of the quality of pneumatic components, otherwise it will cause huge losses, so the work reliability of pneumatic components is very important. In the sailing ship, there are a lot of pneumatic components used, but not many pneumatic component factories can enter this field, the reason is that its reliability requirements for pneumatic components are particularly high, and must pass the certification of the relevant international machinery.

To high speed, high frequency, high response, high life direction. In order to improve the production efficiency of production equipment, improve the working speed of the actuating element is imperative. Our cylinder working speed is generally below 0.5m / s. According to Japanese experts forecast, five years later most of the cylinder speed will be increased to 1-2m/s, some requirements up to 5m/s. Cylinder work speed, not only require the cylinder quality, and the structure should be improved, for example, to configure hydraulic shock absorbers to increase the buffer effect. The response time of the solenoid valve will be less than 10ms, life increased to more than 50 million times. The United States has a gap seal valve, because the spool suspended in the valve body, no contact with each other, in the absence of lubrication, the life of up to 200 million times.

Oil-free lubrication technology is commonly used to meet certain special requirements. Due to environmental pollution and the requirements of the electronics, medical, food and other industries, the environment does not allow oil, so oil-free lubrication is the development trend of pneumatic components, while oil-free lubrication can make the system simplified. European market oil misters have been a product of elimination, generally do not have oil lubrication. In addition, in order to meet certain

Special requirements, deodorization, sterilization and precision filters are being developed, the filtration precision has reached 0.1 ~ 0.3μm, the filtration efficiency has reached 99.9999%.

Pneumatic seals made of PTFE as the main composite material are heat-resistant (260°C), cold-resistant (-55°C) and wear-resistant, and are used in more and more applications.

In order to improve the quality, vacuum die-casting, hydrogen oxygen explosion deburring and other new technologies are gradually promoted in the manufacture of pneumatic components.

Easy to maintain, repair and use. Overseas is studying the use of sensors to achieve pneumatic components and systems with fault prediction and self-diagnosis function.

From the above pneumatic technology development direction can be seen, in the development of pneumatic products we have a lot of work to do. Any pneumatic component factory, even if its scale is not large, as long as breakthrough in one aspect and keep the leading technology, it can take a place in the market, and get survival and development in the fierce competition.

Life-saving thrower The main component of the life-saving thrower is a built-in cylinder with a folding stock of the firing gun body, which is a typical application of pneumatic products. It plays a big role in water rescue and land rescue.

The market direction of pneumatic components Pneumatic components development direction: higher safety and reliability. Pneumatic technology international standards can be seen, the standards not only put forward interchangeability requirements, and emphasize safety. Pipe fittings, air source processing shells and other pressure resistance test pressure increased to 4 to 5 times the use of pressure, pressure resistance time increased to 5 to 15min, but also in high and low temperature test. If these international standards are implemented, domestic cylinder barrels, end caps, gas source treatment castings and pipe joints are difficult to meet the standard requirements. In addition to the pressure test, the structure also made certain provisions, such as gas source treatment of the transparent shell external provisions to add a metal shield.