Fully Automatic "Blocking" Machine Loading System

Lens Machine Loading

Trays holding two lenses and a unique barcode are automatically loaded into one of five lanes in the conveyorised storage system where they wait in a queue. There are 16 trays in each lane giving a buffer storage capacity of 80 trays. One Flex Chain 'Load/Unload Conveyor' runs the complete length of the system, from the tray storage system past all five blocking machines to an out-feed conveyor. The 'Load/Unload Conveyor' has 5 load units and 5 unload units together with sensors and stop gates. The conveyor is controlled by a PLC (programmable logic controller) which communicates with the five machines PLCs.  The conveyor control programme has a number of pre-set speeds so that none of the blocking machines are left idle.