Analysis on the development prospect of the hottes

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Analysis of the development prospect of China's pneumatic tool industry

1. Miniaturization and integration

limited space requires that the overall size of pneumatic components should be as small as possible, and miniaturization is the main development trend. Now the minimum cylinder inner diameter is only f2.5, and the switch is configured; The width of the solenoid valve is only 10mm, and the effective cross-sectional area is 5mm2; The pressure reducing valve of interface F4 has also been developed. According to the survey, the demand for miniaturized components will double every five years

the integration of air valves not only integrates several valves, but also includes functions such as sensors and programmable controllers. The purpose of integration is not only to save space, but also to facilitate the reliability of installation, maintenance and work

2. Precision

in order to make the positioning of the cylinder more accurate, sensors and proportional valves are used to realize feedback control, and the positioning accuracy is up to 0.01mm

in terms of cylinder precision, 0.3mm/s low-speed cylinder and 0.01N small load cylinder have also been developed

in gas source treatment, a filter with filtration accuracy of 0.01mm, filtration efficiency of 99.9999% and a pressure reducing valve with sensitivity of 0.001mpa have been developed

3. Combination and intelligence

the simplest combination of imported pneumatic tool components is the cylinder with valve and switch. In material handling, the combination of air cylinder, swing air cylinder, pneumatic chuck and vacuum sucker has been used; There is also a combination of moving small items, which is composed of two cylinders with guides according to the X and Y axes respectively. It is also equipped with solenoid valve and program controller, which has a compact structure, Take up space "today's Lillian is small, and the journey is adjustable.

Japanese Seiki (strain) The developed intelligent valve with sensor and logic circuit is a combination of pneumatic and photoelectric technology. Without external actuator, the signal of the sensor can be directly read and judged by the logic circuit to determine the work of the intelligent valve and subsequent actuator

the development of functional modules has a history of more than ten years, and now it is constantly improving. These universal modules can be combined with various schemes to realize different mechanical functions, which is economical and practical. Therefore, tepex is used to strengthen these areas and facilitate

4. Mechatronics

in order to accurately achieve the preset control objectives (such as switch, speed, output force, position, etc.), closed-circuit feedback control mode should be adopted. The conversion between gas and electric signals has become the key to realize closed-circuit control, and the proportional control valve can become the interface of this conversion. It is a major topic for the development of pneumatic technology to develop various forms of proportional control valves and electro pneumatic proportional/servo systems in a long period of time in the future, and make them have good performance, reliable operation and low price

now there are many application examples of proportional/servo system, such as precise positioning of cylinder; Used in vehicle suspension system to achieve good vibration damping performance; Automatic tilting device when the cable car turns; Robots serving patients, etc. How to make the above examples more practical and economical remains to be further improved

5. Standardization

implementing standards, especially ISO international standards, is a principle that enterprises must abide by. It has two aspects to do: first, pneumatic products should implement the current standards related to pneumatic, such as terminology, technical parameters, test methods, installation dimensions and safety indicators. The second is that enterprises should establish the assurance system stipulated in the standard. There are three: quality (ISO9000), environmental protection (ISO14000) and safety (ISO18000)

standards are constantly added and revised, and enterprises and their products will also continue to develop and update. Only in this way can we promote the steady development of pneumatic technology

6. Safety

according to the recently issued ISO international standards on pneumatic, the safety requirements for imported pneumatic tool components and systems are very strict. Iso4414 general principles of pneumatics divides dangerous elements into 14 categories, mainly including mechanical strength, electrical appliances, noise, control failure, etc. The ISO international organization has also issued the ISO18000 standard, requiring enterprises to establish a safety assurance system and put safety issues on a particularly important agenda. Therefore, it is also the general trend of pneumatic technology development to consider safety indicators in product development and system design. For domestic enterprises, it is necessary to reexamine and revise the products that have been put into the market because the past industry standards ignored safety issues

7, oil-free, tasteless, aseptic

human beings have higher and higher requirements for the environment, so oil-free pneumatic components will be popularized. There are also some special industries, such as food, beverage, pharmaceutical, electronics, which have more stringent requirements for air. In addition to oil-free, they also require tasteless and sterile filters. Such filters with special requirements will be continuously developed

8. Application of new technologies, new processes, new materials

profile extrusion, casting infiltration and module assembly have been widely used in China more than a decade ago. Secretary General Luo Baihui suggested that scientific and technological personnel in the hardware tool industry should pay special attention to new die-casting technologies (hydraulic core pulling, vacuum die-casting, etc.), new deburring processes (explosion, electrolysis, etc.), piezoelectric technology, bus technology, new soft magnetic materials, dialysis membrane applications, seal technology, ultra precision machining, and new trends in nanotechnology

9. Meet the special requirements of some industries

in the fierce market competition, it is important to develop special pneumatic components for the specific requirements of some industries to expand the market. Therefore, after being installed on the material testing machine, all factories pay great attention to it. Recently developed by the domestic pneumatic industry, such as aluminum special cylinder (high temperature resistance, self-locking), railway special cylinder (earthquake resistance, high reliability), rail lubrication special gas valve (low temperature resistance, self filtration ability), environmental friendly automobile gas system (multi-media, excellent performance), etc

10. Energy conservation, environmental protection, low power consumption

energy conservation is a permanent topic for enterprises, and will be stipulated in the establishment of ISO14000 environmental protection system standards. The low power consumption of pneumatic components is not only to save energy, but also to be combined with microelectronic technology. Solenoid valves with power consumption of 0.5W have long been commercialized, and air valves with power consumption of 0.4W and 0.3w have also been developed, which can be directly controlled by PC

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