High-speed SMD mounting machine has minimal footprint
26 Jan 2000
Manufacturing / Production Technology, Hardware & Services
Allan McKinnon
Fuji has developed a new concept production machine for SMD mounting. This minimum footprint machine has a modular design for easy integration. For maximum performance the idle and changeover times have been minimised to give improved cycle times.
The unit has new twin-carousel placing heads which are each fitted with 16 nozzles. With a placing rate of 20 000 pcs/h it has on-the-fly vision inspection. This is performed as the placing head rotates reducing placing time. Idle time has been reduced by integrating the operation of the twin-table and twin placing heads. Placing accuracy is specified as ±0,125 s in the XY direction, and placing rate 0,125 s/shot.
The nozzle trays can contain up to 48 nozzles and can be automatically rearranged following program changes or for the exchange of bad nozzles. The trays are replacable in one operation
Two 24-slot power feeders can hold up to 96 parts (8 mm tape) and it is possible to exchange feeders during production without danger of damaging the nozzles. The newly-designed power feeders (double channel 8 mm feeders) have ID recognition and provide a rapid but stable part feeding at adjustable pitches (for tape widths of 12 mm or more). Placable parts are: 1005; 20 x 20 mm with max part height 6 mm.
Fuji has designed an efficient board loading system which gives a zero loading time through the adoption of twin tables. Shuttle functions on the in- and out-conveyer and programmable board-transfer positions for the previous and next machines ensure smooth integration into the production line. The max and min PCB board dimensions are: 330 x 280 mm and 80 x 50 mm respectively. A conveyer length of only 1435 mm results due to the rationalised machine layout.
There is also the facility for splicing for paper and embossed tape (8, 12, 16 mm) that further reduces changeover time through splicing and separation of the feeder and reel holder.
Parts out, remaining parts and maintenance information can be gathered through the installation of an optional kitting station. Parts out information can also be read at the machine.
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