Electronic parts mounting apparatus and electronic parts mounting method

An electronic parts mounting method under which a plurality of types of electronic parts are mounted on a single substrate according to a defined combination of characteristics of the plurality of types of electronic parts by an electronic parts mounting apparatus that includes a substrate conveyance path for conveying and positioning a substrate on which the plurality of types of electronic parts are to be mounted;

• a plurality of parts feeders that feed, according to the type, the plurality of types of electronic parts to be mounted on the substrate;
• a mount head that picks up the plurality of types of electronic parts fed from the respective parts feeders and mounts the thus-picked-up electronic parts to the substrate positioned by the substrate conveyance paths;
• a remaining parts number calculation unit that calculates number of electronic parts still remaining on the plurality of parts feeders according to the type of the electronic part;
• and a target parts-to-be-mounted number memory unit that stores target number of electronic parts to be mounted on the substrate according to the type of the electronic part, the method comprising:
• comparing according to the type of the electronic part, before the mount head starts mounting the electronic parts on the substrate positioned by the substrate conveyance path, number of electronic parts still remaining on the plurality of parts feeders calculated by the remaining parts number calculation unit with target number of electronic parts to be mounted on the substrate stored in the target parts-to-be-mounted number memory unit;
• deactivating the mount head when number of remaining electronic parts of at least one type is determined to be smaller than the target number of electronic parts to be mounted as a result of the comparison of the number of electronic parts still remaining on the plurality of parts feeders calculated by the remaining parts number calculation unit with the target number of electronic parts to be mounted on the substrate stored in the target parts-to-be-mounted number memory unit according to the type of the electronic part;
• and
• replacing all of the plurality of types of electronic parts, when a stipulated combination of the plurality of types of electronic parts can not be maintained as a result of the replacement of the electronic parts on occasion when the number of remaining electronic parts is smaller than the target number of electronic parts to be mounted.