Cassette for double-sided printed circuit board transport - has retainers fixed to underpart comprising connected joint elements which form section flexible in upward direction

摘要

A fixed frame at each loading and unloading station has two guide rails (7) of U-section with mouldings (7a,7b) on the inside providing linear guidance for rollers (19) on chain bolts (18) protruding from a locking joint element (16a) flexible in one direction (16b) only. Sections (16) on both rails (7) form the underpart of each cassette (12) with a right-angled bracket (17) across the direction of movement of the boards in retainers (9) on each transverse support (14) of the underpart. ADVANTAGE - Fragile double-sided boards of any format and thickness can be turned between horizontal and vertical positions without sustaining damage.