| 摘要 |
PURPOSE:To optimally control the vacuum suction timing of a nozzle that holds an electronic part in accordance with the change in the rotational speed of the motor that drives a rotary head. CONSTITUTION:In an electronic part mounting unit in which, while a rotary head 1 rotates, an electronic part P from a part feeder 8 is held by a nozzle 3 on the transfer head 2 provided on this rotary head 1 to pick it up, and transferred and mounted on a circuit board 14 that is positioned on the X-Y table 4, the timings of the vacuum suction holding of the nozzle 3 and/or the vacuum suction release are set in accordance with the speed of a motor M1 that drives the rotary head 1. |
