| 摘要 |
PURPOSE:To transfer an optimum number of printed circuit boards at all times by applying the constitution where an upstream side device is caused to generate a signal for stopping the transfer of the boards, when an acceptable maximum number of boards saved in a memory device is detected as delivered to a conveyor. CONSTITUTION:In starting a work, a teaching key is first pressed for displaying maximum number setting data for a feed conveyor on a CRT screen, thereby setting a maximum number of printed circuit boards to be transferred, for example, the number of 1. Then, a start key is pressed to start a transfer operation. In this case, when boards 6 (6A to 6D) are transferred from an upstream side device to a feed conveyor 14, and a sensor 28 detects the passage of the boards 6, a conveyor drive motor is stopped and a signal for stopping the transfer of the boards 6 to the conveyor 14 is sent to the upstream side device. Thereafter, the feed member 25 of a transfer 24 is caused to descend, and chip parts are mounted on the boards 6 on an X-Y table 9 in sequence with an adsorption head section. Then, the boards 6 are transferred to an unloading conveyor. |
