Application of pneumatic technology, advantages and disadvantages of pneumatic technology

Pneumatic technology application pneumatic (PNEUMATIC) is the abbreviation of "pneumatic technology" or "pneumatic transmission and control". Pneumatic technology is an engineering technology that uses air compressors as the power source and compressed air as the working medium to transmit energy or signals. It is one of the important means to achieve various production controls and automatic controls. The history of people using the energy of air to complete various tasks can be traced back to ancient times, but as the prototype of the application of pneumatic technology, around 1776, John Wilkinson invented an air compressor that could generate a pressure of about 1 atmosphere. In 1880, people used cylinders to make pneumatic braking devices for the first time and successfully used them to brake trains. Early 1930s. Pneumatic technology has been successfully used in the opening and closing of automatic doors and various mechanical auxiliary actions. In the 1960s, especially in the early 1970s, with the development of industrial mechanization and automation, pneumatic technology was widely used in various fields of production automation, forming modern pneumatic technology. The following briefly introduces some examples of the application of pneumatic technology in the field of production technology 1. Automobile manufacturing industry The production lines of modern automobile manufacturing plants, especially the welding production lines of the main processes, almost without exception use pneumatic technology. For example: the movement of the car body in each process;the body shell is picked up and put down by the vacuum suction cup, and clamped and positioned at the designated station;the rapid approach of the spot welding machine's welding head, the variable voltage control spot welding after deceleration and soft landing, All use cylinders with various special functions and corresponding pneumatic control systems. The high rate of spot welding, the accuracy of force control and the high degree of automation that completes the entire process can be called one of the most representative pneumatic technology applications. In addition, the high-speed cylinder (maximum speed up to 3m/s) and the proportional control technology of the composite control valve used in the handling device represent new developments in today's pneumatic technology. 2. Electronics and semiconductor manufacturing industry In the assembly lines of household appliances such as color TVs and refrigerators, and in the assembly lines of various electronic products such as semiconductor chips and printed circuits, not only can you see various cylinders of different sizes and shapes , air claws, you can also see many smart vacuum suction cups gently sucking picture tubes, cartons and other items that are difficult to grasp with ordinary air claws, and transporting them to designated locations. The chip handling system, which has very strict acceleration limits, uses a SIN cylinder that accelerates smoothly. This kind of cylinder has a special acceleration and deceleration mechanism, which can smoothly send a cup filled with water from point A to point B without overflowing. In order to improve test efficiency and pursue accurate test results, Motorola used a mobile phone performance and life test device composed of an SMC small cylinder and a control valve. Not only can the frequency of keystrokes be changed at will, but the keystrokes can also be changed at any time as needed. Strength. For places with high environmental cleanliness requirements, clean series pneumatic components can be selected. This series of cylinders, valves and other components have special sealing measures. 3. Realization of production automation In the 1960s, pneumatic technology was mainly used as auxiliary transmission in relatively heavy operating fields. Nowadays, in various fields of industrial production, in order to ensure the uniformity of product quality, to reduce monotonous or heavy manual labor, to improve production efficiency, and to reduce costs, pneumatic technology has been widely used. In parts processing and assembly production lines in many industries such as sewing machines, bicycles, watches, washing machines, automatic and semi-automatic machine tools, etc., there are many processes such as handling, transposition, positioning, clamping, feeding, loading and unloading, assembly, cleaning, and testing of workpieces. All use pneumatic technology. Pneumatic woodworking machinery can complete many tasks such as gluing, laminating, cutting, planing, grooving, rod beating, and assembly. Pneumatic technology is widely used in many occasions such as automatic air jet looms, automatic cleaning machines, metallurgical machinery, printing machinery, construction machinery, agricultural machinery, shoemaking machinery, plastic product production lines, artificial leather production lines, glass product processing lines, etc. 4. Realization of packaging automation Pneumatic technology is also widely used in many industries such as fertilizer, chemical industry, grain, food, medicine, etc. to realize automatic metering and packaging of powdery, granular, and block materials. It is used in many processes such as automatic cigarette rolling and automatic packaging in the tobacco industry. Used for automatic metering and filling of viscous liquids (such as paint, ink, cosmetics, toothpaste, etc.) and toxic gases (such as gas, etc.). As can be seen from the examples cited above, pneumatic technology has been widely used in various industries. Advantages and Disadvantages of Pneumatic Technology Compared with other transmission and control methods (such as mechanical, electrical, electronic, and hydraulic methods), the advantages and disadvantages of pneumatic technology are as follows: Advantages of pneumatic technology: 1. The pneumatic device has a simple structure, is lightweight, Easy to install and maintain. The pressure level is low, so it is safe to use. 2. The working medium is