PURPOSE: To improve reliability of piling length determination of piled-up coins by a method wherein a reference of piling length determination made at a wrapping part according to a measured value of the piling length at a piling part is set at an appropriate value.
CONSTITUTION: A controlling means 81 which controls a piling part 2 for piling up coins drawn out one by one and a wrapping part 3 for receiving and wrapping the piled coins is connected with piling length measuring means 82 and 59 for measuring piling length of the piled coins respectively at the piling part 2 and wrapping part 3 and a storing means 86. The storing means 86 stores a piling length x 0 preliminarily set with respect to a measured value x of the piling part piling length, its tolerance range x 0 ±α and divisions of thicker, standard and thinner x 1 , x 2 and x 3 [x 0 -α≤x 1 < x 0 -β≤x 2 <x 0 +β<x 3 ≤x 0 +α]. Further, the storing means 86 stores a plurality of piling length references y 1 , y 2 and y 3 which are preliminarily set with respect to a measured value y of the wrapping part piling length corresponding to the respective values x 1 , x 2 and x 3 , and its tolerance range yi±γ. At this time, γ<α is satisfied. If the measured value of the wrapping part piling length is within the tolerance range of the wrapping part piling length corresponding to the measured value of the piling part piling length stored in the storing means 86, wrapping is carried out.