Recently, most of industrial products including mobile telephones, personal computers and other electronics, consumer electronics and automobiles are controlled electronically. These products contain so-called printed-circuit boards incorporating capacitors, resistances, ICs and other electronic parts. Surface mounters, i.e. pick and placers mount these electronic parts on the printed-circuit boards to an accuracy of several tens of micron . They can place the parts with various sizes (e. g., the parts with size of 0.3 mm~0.6 mm at minimum and the parts with a length of 150 mm at maximum).
JUKI pick and placers are medium-sized machines called "modular-type". This type is characterized by the flexibility to re-arrange the manufacture line depending on the amounts of productions of customers. Until now, the mainstream has been the large-sized machines. However, they have a large amount of capital investment and it is difficult to re-arrange the manufacturing lines, and they can not correspond to the sudden changes in items and amount of production. The modular-type in which several medium-sized machines are connected can provide the best manufacturing lines required by customers with less amount of capital investment.