IC MOUNTING SYSTEM

PURPOSE:To enable the accurate positioning of IC and the easy mounting on a substrate without damage, by providing a judging means to judge whether the IC is accurately positioned or not, and mounting the IC in accordance with both the detection results of a detecting means to detect deviations of a substrate pattern, and the judgement results of the judging means. CONSTITUTION:When a substrate 7 which is loaded on a conveyer 6 and carried is subjected to positioning, a robot 3 starts to operate, and an IC is attracted from an IC tray 5 by an IC mounting hand 1 installed on the robot 3. After positioning is performed in the manner in which the external shape of the IC is pinched by the IC mounting hand 1 with nails of four directions. Then the IC is dropped in an IC positioning jig 4, and subjected to the positioning in lead interval. When the IC 33 is correctly dropped in, the IC 33 becomes horizontal and the heights of the leads in the four directions become equal. Therefore four proximity sensors 22 previously adjusted detect all leads, and judge that positioning is accurately done. Thereby enabling accurate and reliable mounting of IC on the substrate without damage.