Brief introduction to the development of packaging steel strip coiling machine

Brief Introduction to the Development of Packaging Steel Strip Coiler
　　 The original coiling machine, the reel has two kinds of movable type and fixed type. At present, the stationary down-coiler is widely used. The height of the mobile coil coiler is the same as the height of the rolling line. As the diameter of the coil increases, the coil gradually moves down. The structure of this type of coiler is more complicated. The main function of the mobile coiler is to improve the coiling shape. However, due to the rapid increase in rolling speed, the large-scale steel coil weight, and the increase in the number of ultra-high-strength strip steels, the coilers generally use fixed coilers with high rigidity, while mobile coilers are currently available. Doesn't exist anymore. The capacity of the coiler is also enhanced due to the aforementioned reasons. The coiling thickness of the strip has increased from 13mm in the past to 25mm, and in 1983 the maximum coiling thickness reached 30mm.
　　 Due to the heavy work of the coiler, the complex structure, and the frequency of failures more than other equipment, in order to constantly maintain stable coiling operation and maintain the integrity of the equipment, some factories use the coiler to move out of the rolling line The way repairs are carried out.
　　 Since the 1980s, there have been gas-liquid spin and hydraulic coiling machines. The coiling capacity and equipment of these two coilers are slightly different from pneumatic coilers.
　　The air-liquid coiler pinch roll and roll gap setting are completed by hydraulic cylinders, and the shock vibration generated during steel biting is absorbed by the cylinder. The pinch roller and the roll gap of the hydraulic coiler are completed by the hydraulic servo system, and the setting grid is extremely separated, and the shock and vibration are also absorbed by the hydraulic cylinder. In order to avoid and reduce the indentation of the strip head during the second and third rounds of the coil, the winding roller adopts skip control technology.
　　 Since the 1990s, hydraulic coilers have been adopted for new or reformed coilers in my country, and the old pneumatic coilers have been phased out.
　　 In addition, for thin-gauge strip steel, due to unstable operation and easy floating on the output roller table, the threading speed is limited. In order to shorten the threading time, reduce the loss, increase the output and ensure the final rolling temperature, foreign countries have appeared A close-range coiler. The distance between it and the finishing stand is 40-70m. When coiling, the coiling tension is established between the pinch roller and the reel. The short-distance coiler is suitable for high-temperature coiled strip steel and thin strip steel that wishes to obtain a good coil shape.