Electronics Forum | Thu Jul 28 08:02:39 EDT 2005 | bobpan
When we see the upside down part problem its typically feeder related....either the feeder is making the part jump or the z is taught tooooooo deep causing the part to jump before its in its pick location. chow
Electronics Forum | Thu Jul 28 13:12:49 EDT 2005 | SuMoTe
I'm thinking vibe feeder as well. I saw this alot on older machines (Quad IVC) vibe was set too high making parts jump around. If it is a vibe feeded, look for spillage behind the feeder base.
Electronics Forum | Fri Aug 12 20:23:26 EDT 2005 | dorklover664
Is it possible to advance the feeder at shorter intervals? So every time the part is picked the feeder moves 2 times shorter movements instead of one long move? Just a thought.
Electronics Forum | Thu Jul 28 08:02:09 EDT 2005 | stepheniii
Check the pick postion in the feeder. If the nozzle is picking at the edge of the component, it could flip it. BTW what kind of machine are you using? Stephen Olan
Electronics Forum | Thu Jul 28 08:16:33 EDT 2005 | grantp
Hi, Your not using vibration feeder here are you? I have seen this a lot with vibration stick feeders. Regards, Grant
Electronics Forum | Thu Jul 28 08:35:58 EDT 2005 | jdengler
Most likely a feeder that has a rough advance. This can cause the part to flip in the tape before the nozzle gets it. Jerry
Electronics Forum | Fri Jul 29 19:21:59 EDT 2005 | Jason Fullerton
Definitely feeder related - we get it all the time on those package parts. If you can, slow the tact of the feeder advance a bit (if it's on T&R). We also don't catch it at placement, but at pre-reflow visual or AOI.
Electronics Forum | Tue Aug 02 04:52:16 EDT 2005 | aj
Crishan, You must be seeing an incredible amount of Attrition on this component if this is the case. You should most definitely be able to put in a Pick-up offset either at the machine or in the part data. aj
Electronics Forum | Wed Aug 03 03:01:18 EDT 2005 | woodglass
Regarding the issue of using a pick-up offset: I really can't see any benefit to this if the pockets in the tape are too large, since this means that you cannot be sure that the components always end up in the same position when the feeder indexes.
Electronics Forum | Tue Aug 02 11:17:27 EDT 2005 | Stefan
Tape feeders usually have a fixed pick position regardless of the package size. Is the component body off center in the tape pocket? I hope you can enter an offset in the feeder set up file. Also, perforation holes can deform, if the reel is too hea
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