Jinan Zeye will briefly explain some common problems encountered during the opening book opportunity, as well as corresponding solutions.1、 Possible reasons and countermeasures for the inability of the uncoiler to rotate normally:1. The uncoiler is overloaded and the frequency converter has an overcurrent alarm.The solution is to turn off the main power supply of the electronic control system and restart it& nbsp;2. The gearbox gears are damaged.First, turn off the main power, then manually rotate the unwinding head and observe if there is any jamming phenomenon. If the gearbox gears are inspected, replace damaged components in a timely manner.3. The photoelectric proximity switch at the top of the unwinding machine's feeding device or the photoelectric proximity switch at the bottom of the buffer pit is damaged and cannot detect the proximity signal of the silicon steel sheet. It should be replaced& nbsp;2、 By uncoiling and measuring the actual thickness and width of the strip steel, and comparing them with the accuracy curves of the thickness gauge and width gauge, it is possible to verify whether the thickness gauge and width gauge participating in automatic control are normal, and whether the thickness and width control of the strip steel is within the standard. With the development of the steel distribution industry and high-end sheet metal industry, users have higher requirements for the flatness of the cut strip in the cross cutting and unwinding line, and this trend is particularly evident in the thin plate unwinding line. When determining the main parameters of the straightening machine, such as roller diameter and roller spacing, it is necessary to meet the strength requirements of the straightening roller when straightening the maximum thickness strip, as well as the requirements for the straightening effect of the minimum thickness strip, and the strength of the universal joint and journal connecting the straightening roller.3、 The unwinding head of the unwinding machine cannot expand or contract. Possible reasons and countermeasures:& nbsp;1. The hydraulic tensioning solenoid valve output line of the uncoiler is blocked, causing the electromagnet to malfunction.Solution: Check the circuit diagram to see if the output action fuse of the solenoid valve is burnt out. If so, replace it.2. The oil pressure of the unwinding head tensioning device of the unwinding machine is too low, and the tensioning mechanism is worn, resulting in the loosening of the tensioning plate.Therefore, it is necessary to replace the 68 # hydraulic oil once a year to maintain its viscosity, and regularly lubricate and maintain the unwinding head.