Electronics Forum | Tue Jun 10 15:47:18 EDT 2014 | hegemon
Possibly the components have been re-taped in that particular reel, with only electrical function in mind? Hard to see a nozzle causing a flip, and I am thinking if your feeders are vibrating bad enough to flip the components in the tape, that you
Electronics Forum | Wed Jun 11 11:40:12 EDT 2014 | rgduval
As has been mentioned, it's likely that the component is moving in the tape, and flipping over. It is not likely that the pick/place operation is causing this. What I haven't seen mentioned is that there is an acceptability criteria in IPC for inve
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 | 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 | 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 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 | 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 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.
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