The invention relates to an automatic dynamic adjustment method for synchronous extension of a loop of a cold rolling continuous
processing line. The automatic dynamic adjustment method specifically comprises the following steps of: at a non-drift stage of an uncoiling
machine, acquiring a pulse
encoder signal on an inlet tension roller, calculating the actual traveling distance of
strip steel and thereby judging the relative position of a weld joint and the loop, and automatically adjusting a synchronous
extension set value of the loop; at a drift stage of the uncoiling
machine, calculating length of
strip steel to be replenished according to a target set value and a current actual value for the synchronous extension of the loop, comparing the length of the
strip steel with that of the remaining strip steel on the inlet uncoiling
machine, and automatically adjusting the synchronous
extension set value of the loop; and finally, arranging a
functional module in a cold rolling continuous
processing line
control system to realize an undisturbed automatic switching function of the synchronous
extension set value of the loop. According to the automatic dynamic adjustment method, deviation of the strip steel in the loop can be prevented, and the strip
breakage probability of the strip steel in the loop is reduced; the production efficiency of the
processing line can be increased and the working intensity of operation personnel is reduced; and the disposal difficulty for strip breakage accidents in the loop can be reduced and the accident
recovery time is shortened.