1. Brief introduction of pneumatic system
1. Pneumatic technology: Pneumatic technology uses compressed air as the medium and air compressor as the power source to achieve energy transfer or
The engineering technology of signal transmission and control is one of the important components of fluid transmission and control, and it is also the realization of industrial automation.
2. Typical composition of pneumatic system: air pressure generating device-actuator-control element-auxiliary element
3. Advantages of pneumatic system: Compared with traditional hydraulic technology, pneumatic technology has the following advantages:
(1) The structure is simple and light, easy to install and maintain;
(2) The output speed is generally 50~500mm/s, which is faster than the hydraulic and electrical methods;
(3) To shock load and overload. The adaptability of the load is strong;
(4) High reliability, long service life, safety, no pollution and low cost. Because pneumatic technology has
With the above advantages, pneumatic technology has been widely used in industrial enterprises all over the world. A complete mechatronics package oncluding machinery, power, information detection and sensing, execution, control and signal processing. As an implementation of mechatronic systems
Some pneumatic components and their systems not only have mechanical and pneumatic actuators, but also integrate information detection and sensing components, and even integrate some other micro electromechanical systems.
4. Disadvantages of pneumatic system: poor operation stability, low output power, large noise, slow signal transmission compared to electrical signals
2. Application Overview of Pneumatic System
The expansion of the application of pneumatic technology is a sign of the development of the pneumatic industry. The application of pneumatic components is mainly two aspects: maintenance and distribution set. The application of domestic pneumatic components ranges from metallurgical equipment worth tens of millions of yuan to chairs with only a few hundred yuan. Railway switches, train brakes, street cleaning, lifting equipment in special workshops, military command vehicles, etc. all use specially developed domestic pneumatic elements pieces. This shows that pneumatic technology has penetrated into all walks of life and is expanding.
The application of pneumatic technology is mainly in:
(1) Manufacturing industries such as automobiles and ships: including welding production lines, fixtures, robots, conveyor equipment, assembly lines, etc.
(2) Production automation: the processing and assembly of parts on the mechanical processing production line, such as the handling, indexing, positioning and testing of workpieces.
(3) Some mechanical equipment: metallurgical machinery, printing machinery, construction machinery, agricultural machinery, shoe-making machinery, plastic product production line, and many other occasions
(4) Electronic semiconductor, home appliance manufacturing: silicon wafer handling, component insertion and soldering, color TV, refrigerator assembly production line .
(5) Packaging process automation: automatic measurement and packaging of powder, granular, and bulk materials such as fertilizer, grain, food, and medicine. Development and trend of many industrial pneumatic systems such as automated cigarettes and automated packaging used in the tobacco industry. Used for automatic metering and filling of viscous liquids (such as cosmetics, toothpaste, etc.) and toxic gases (such as gas, etc.).
3. Development and trend of pneumatic technology
In recent years, with the introduction of microelectronics and computer technology, the development and application of new materials, new technologies and new processes, pneumatic components and pneumatic control technology have ushered in a new development space, positive miniaturization, multi-function, integration, networking and intelligence Development. From the perspective of various pneumatic products on the current market, the development of pneumatic components is mainly reflected in the following aspects surface. After years of hard work towards the development of miniaturization and high performance, the product levels of domestic-funded enterprises have mostly reached those of foreign enterprises in the 1990s, and a few leading products have reached the level of contemporary foreign enterprise products. The performance of pneumatic components is also rapidly improving, and the quality, accuracy, volume, reliability, etc. are all close to the goals of user needs, mainly reflecting its miniaturization, low power consumption, high speed, high precision, high output, The development trend of high reliability and long life.