Vacuum pick/place End Of Arm Tools

Nov 10, 2004 4 Replies
D

Hi group,



We need to pick/place 5X5X1mm chips from trays to an electrical programming socket. Chip positioning accuracy in the tray is not very high. Where to find appropriate vacuum pick/place End Of Arm tools ? Should rubber vacuum cups or metal nozzles like in chip mounter machines be used ?



Thanks,



Dieter

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B

Accurate pre-positioning would seem to be key. If not by a vibro-hopper, then by a dispenser that lines them in a single file. This gives excellent positioning against a stop. If the planting force requirement is not excessive, even a home-brew rotary arm with a pneumatic planter might do it.

Brian W

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C

I have used SMC vacuum equipment and found it reliable. Below is their USA web site. They are a Japanese company and I am sure they have representatives in Germany.

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You should have a vacuum switch that inhibits movement until the cup has sealed onto the chip. This makes the pick up more reliable. When you place, you should apply a brief puff of compressed air through the cup after turning off the vacuum to make the place more reliable. SMC has all the hardware to do this.

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A

snipped-for-privacy@control-tech.com (Charles Erskine) wrote in news: snipped-for-privacy@posting.google.com:

Your local Festo dealer also has all the equipment for this.

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D

Thank you all.

I have looked at SMC, Festo, SKF et all and found cups, venturies...

But it is hard to estimate, whether a mispositioned chip on a rubber vacuum cup falls off and jams when guided into a precisor/socket guide. Rubber cup or steel nozzle ? How much tolerated mispositioning in trays ?

Dieter

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