This thesis is mainly focuses the production process of automated equipment assembly. The equipment often has abnormal situations in the copper sheet feeding module. The cause of the abnormal situation is found and improvement plans is suggested in this thesis. In the copper sheet feeding module, a gap between the vacuum nozzle of the reclaiming arm and the copper sheet is found, so that the suction nozzle cannot absorb the copper sheet, resulting in abnormal value of the pressure switch and abnormal vacuum suction. In order to solve this problem, this thesis the sensor is used to detect the actual height of the copper sheet. When the copper sheet reaches the specified height, the optical fiber sensor will send the signal to the programmable logic controller, and notify the reclaiming arm to pick up the copper sheet to prevent the generation of gaps, thus improves equipment failure rate and promotes production efficiency.