METHOD AND DEVICE FOR AUTOMATIC ADJUSTMENT OF PRINTED CIRCUIT BOARD CONVEYING MEANS IN A TEST MACHINE

摘要

-9- A method and a device for automatic adjustment of the conveying means for printed circuits (20) in a test machine of modular type, comprising a test module (1 ), a loading module (2), and an unloading module (3), wherein respective moveable rails (110, 111; 210, 2111; 310, 311 ) are provided to support said means for conveying the printed circuit (20), advantageously in the form of belts (10, 119), wherein said rails (110, 111) are moved toward each other, with an independent movement, and temporarily stopped on detection of corresponding stops (26) indicative of t he width of the printed circuit (20) to be tested, then withdrawn by a fixed, pre- established distance, so as to be disposed in the correct conveying position, the rails (210, 211; 310, 311) of the other modules (2, 3) being brought toward each other and stopped on detection of fixed stops in the test module (1), so as to be disposed in perfect alignment with said rails (110, 111).