Electronics Forum | Thu Apr 10 10:05:30 EDT 2003 | stefwitt
I do assume the only machine capable of reporting rejected components is the placement machine. 2-3% is certainly way too much. Expect rejects ( out of visible tolerance ) in the permille range but not percent. If components are rejected with vacuum
Electronics Forum | Thu Jun 17 11:46:33 EDT 2004 | Claude_Couture
Please define "worst case for feeder sizes". Quantity? Arrangement? wasted feeder space?
Electronics Forum | Tue May 31 10:49:54 EDT 2005 | chunks
Don't forget that loading a feeder will waste parts, depending on the feeder. A lot of bean counters over look this. But then again, they'll spen $100 chasing pennies around.
Electronics Forum | Sat Oct 27 14:57:00 EDT 2018 | jacobidiego
Hi Experts, I have noted a savings opportunity on our work-place as chipmounters discard carrier tapes which are easily separated in different waste-containers below the feeders. Normally the company pays a service to dispose that waste. Have anyon
Electronics Forum | Thu Mar 30 13:15:17 EST 2006 | gregp
Maybe the issue is how the feeders are being unloaded. The operators should leave enough covertape to reload the reel onto a feeder without component waste. If the issue is some parts are exposed in the feeder then you will most likely loose those p
Electronics Forum | Thu May 26 16:10:08 EDT 2005 | pjc
I have never seen a published "industry standard". What I've experienced with Fuji CP and IP is less than 1%. If feeders are changed over 3-4 times per day that will certainly add to this number. Not to mention sloppy operators. Some machines consume
Electronics Forum | Thu May 26 14:27:38 EDT 2005 | dggjr
There are definately patents in force for many feeder assembies. Specific mechanisms like waste tape take-up and sprocket indexing are covered by several patents. Fuji, Pan, Yamaha all have patents on the various aspects of their feeders. Best of
Electronics Forum | Mon Sep 18 10:40:15 EDT 2006 | SWAG
Depending on what kinds of machines you run and feeder style, self adhering leaders work well to minimize the need for a long leader. We use them on every reel. We can generally load most feeders with only waste of about 4 parts by use of leaders (
Electronics Forum | Wed Aug 25 22:55:59 EDT 2004 | pdeuel
We started placing 0402 with regular feeders and wasted every other part untill we got the correct feeders. The cost for most parts runs less than 1/20 th of a cent. Reels come in quanities of 10,000 instead of 5,000. You will also need the correct t
Electronics Forum | Wed May 08 10:05:42 EDT 2002 | Claude_Couture
Maybe the problem is not the cutter, but the arm that advance the tape in the adjacent feeder gets actuated at the same time as the active feeder. line-up a feeder in pickup position visually, then turn the crank until the roller or feeder advance me
