We've seen this caused by:
*  Static charge of components that are small relative to their pocket [may
be winter time - low humidity - related, also.].  Seek relief with an
ionizer bar over feeder bank.
*  Adhesive [from cover tape??] on component.  Some of these were so
gummed-up that when able to be picked, they would not give-up the nozzle
even when the nozzle was removed from the machine.  Seek relief by mugging
the supplier.
*  Adhesive from cover tape attaches component to cover tape.  Seek relief
by ...

Dave Fish

----- Original Message -----
From: bbarr <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, March 09, 2001 1:46 PM
Subject: [TN] Part Sticking to Top Tape?


> I have two different part numbers of a surface mount resistor array that
> feeds out of a 12mm tape. This is the problem with both: The back end of
the
> part wants to ride up with the tape at the tape peel back point. They look
> like little soldiers laying on top of the tape. I say the back edge is
> riding up because the parts are marking side up and I don't see the part
> actually flipping. The part is .200 x .120 so we are not talking a real
> small part here. Is this a static problem? Even when the part is in the
> pocket just before the tape peel back point it seems like it is attracted
to
> the tape because the front edge of the part is raised up against the tape.
> Anyone else experience this? To get the boards built I fabricated a little
> piece of metal and taped it to the top of the feeder to keep the part in
the
> pocket. Not too elegant and I would really like to know what is going on
> here. I even tried blowing air from an ionizer fan on the reel to see if I
> could neutralize a charge, but that did not help.
>
> Thanks.
>
>
> Bob
>
>
> Robert Barr
> Manufacturing Engineering
> Formation, Inc.
> Voice: 856-234-5020 x3035
> Fax: 856-234-6679
> email: [log in to unmask]
>
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