定位控制在冷轧生产线的应用（Application of positioning control in cold rolling production line）.docVIP

定位控制在冷轧生产线的应用（Application of positioning control in cold rolling production line） The application of positioning control in cold rolling production line (introduced the document only for part of the entrance to the location positioning principle through their own understanding of writing and, if you think it can propose amendments, positioning control program for use in the more, also belong to the difficult part, because the environment is different, in real time location may also change) The cold rolling production line using SIEMENS PLC automatic control system, a continuous galvanizing line, continuous annealing production line, the production of strip positioning control in each production line plays a critical role in the application of the entrance, the largest and most important. Entrance system The production line for the initial part of the entrance system, mainly to complete the coil uncoiling and welding parts, the former major equipment to after walking beam, uncoiler, straight speculation, scissors, scissors, welder, crescent looper equipment entrance. Process and position control system of the 1.1 entrance Entrance system is divided into two channels, two channels on alternate use, such as volume in the channel, take the lead position in the 12 oclock direction, to wear the scissors, scissors at spearheaded by shear in the channel, and then put to the public before waiting for the pinch roll; channel down speed in the tail, and then flick to the channel under the scissors, after the tail to shear welding machine; strip and then wait in an aisle wearing to the welding machine, welding machine in place, and then proceed to the crescent cut at crescent cut, and then washed, normal operation. In the every step of the process and position control are closely related, the positioning system is accurate or not directly related to each step is normal, if not normal light to cause the lead and shear band tail is too long, causing steel waste, it caused heavy f