Electronics Forum | Tue Jun 10 12:53:56 EDT 2014 | demzvill
Yes it will electrically but on the appearance side it is no good. Does it have something to do with the feeder or the nozzle?
Electronics Forum | Wed Jun 11 22:55:12 EDT 2014 | demzvill
Thank you for all the suggestions.I will conduct evaluation bbase on our discussions God bless
Electronics Forum | Tue Jun 10 11:51:15 EDT 2014 | rway
Your target ppm in on the Juki machine a take it. So it's rejecting these parts due to the inversion? Any way to disable this. A right-side down resistor is not ideal, but it will certainly work electrically. Reese
Electronics Forum | Tue Jun 10 17:13:44 EDT 2014 | grauen06
I have seen this on a MyDATA machine and we had to slow our feed rate of the feeder down. That seemed to do the trick. We concluded the carrier tape was too large for the part, but our vendor didn't really seem to care.
Electronics Forum | Tue Jun 10 14:04:08 EDT 2014 | rway
Perhaps neither. I assume the part is T&R. It's flipping inside the tape before placement. I don't know how the nozzle could be doing it. There could be excess vibration on the feeder which is causing the part to flip. Just a thought.
Electronics Forum | Tue Jun 10 23:06:28 EDT 2014 | demzvill
In our assumption also, nozzle is magnetized because the chip termination is made up of alloy so possibilty that when there is excessive contact between two metals there magnetic field produce, so during z up chip is magnetize on the nozzle causing i
Electronics Forum | Wed Jun 11 10:24:29 EDT 2014 | demzvill
Do you mean that the vacuum will lift up the chip before it touches it? We are planning to evaluate a ceramic nozzle to get rid of magnetization. What is your thoughts on this? Thank you
Electronics Forum | Wed Jun 11 10:33:06 EDT 2014 | demzvill
Do you mean that pick up z height is taught too deep thats why it can possibly flip the next chip. I will check our machine if have the same setting as yours. Thank you for this thought.
Electronics Forum | Wed Jun 11 10:01:24 EDT 2014 | isd_jwendell
I do not know the Juki machines, but on my Essemtec I need to turn on the vac after the nozzle is down for 0402 parts. I also cannot touch/hit the current part/tape because it tends to flip the next part from the tape bounce. Then there is also the t
Electronics Forum | Wed Jun 11 16:52:17 EDT 2014 | aybars
yes, you should look to see on that particular feeders Z axis setting. When the tip goes down to the part it may be traveling down little too much. Just make sure you check which way is your - and + increments going and do not exceed more than 30 or
