The Improvement Plan Of Control System Of Pinch Roll In Finishing Area Of High Speed Wire Rod

The pinch roll before laying head is the key equipment of high-speed wire rod production line in the finished product area, due to product silk size and surface temperature changes and blank out different mechanical properties, the traditional control method and increasingly unable to meet the requirements of users of special steel products surface and a disk type.This paper introduced the intelligent control clip roll to solve the problems in laying head and blank scratch the tail disc. Scratch the finished area is mainly due to the blank in the guide groove internal jitter and laying head running speed and blank practical rolling speed mismatch caused by, through the cooperation between PLC and vector drive to precisely control clamp conveying roller and at the end of the mill stand between tension and real-time display is shown, besides internal calculations of the blank actual rolling speed is used to spin machine speed for a given, so it can be good to eliminate jitter and velocity matching problem. The tail disc type problem mainly refers to:rear disc type tail disc type large steel specifications at low speed and small size steel under high speed. The controller provides different control means for different situations. When large size low speed PLC will vector control drive with high current limiting way and in the tail cast steel time synchronization pinch roller and a spinning machine, the actual speed of the disc type optimization, when the small size high speed and PLC using program tracking algorithm accurate judgment the tail part of the billet, and timely advance trigger vector drive speed to maintain is the "frozen", reasonable parameters settings will avoid tail disc type due to the inertial circle.The Improvement Plan of pinch roll is mainly composed of the above two control strategies:to reduce the control strategy and to improve the control strategy of the tail plate. The control strategy is implemented by PLC, vector drive, and other implementation elements. The operator can manually intervene and upload the reasonable parameters through the HMI to the two server. The optimized parameters can be called after the next rolling.PDA can be used to monitor the key variables in PLC, and the data can be saved to provide a reliable basis for the control system. Practice has proved that the intelligent control method due to scratches and disc type pinch roller laying head and the problems resulted in greatly reduced.