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 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 | 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 | Tue Jun 10 22:57:18 EDT 2014 | demzvill
Our observation also is that the tape size is too big for the chip which allows the tape to move around. With this i would like to know if there is is a setting in the machine that would slow the feeding rate. We are using juki mounter 2000 series. A
Electronics Forum | Wed Jun 11 08:53:53 EDT 2014 | fredcalkins
That would be easy to check. Degaus the whole nozzle not just the tip. It should take more than a week to become magnetized again. If it becomes magnetic sooner maybe degauss the head? I would also make sure your vacuum does not come on till the noz
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 | Sat Jun 07 23:37:34 EDT 2014 | demzvill
Hello all Good morning. I just want to ask with you guys about the problem that we always experienced in our production. We could not get our target ppm due. to inverted placement of chip resistor. We are using 2000 series juki mounter and cf03hp j
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
Electronics Forum | Wed Jun 11 11:33:26 EDT 2014 | fredcalkins
I do not have machine experience, but I think vacuum too early would be a more likely cause of chips leaping to a nozzle. Juki nozzles are made of hardened stainless and could be slightly magnetic, but the end is relatively small and would not have t
Electronics Forum | Wed Jun 11 16:41:57 EDT 2014 | isd_jwendell
With Essemtec software you can specify to turn on vacuum once the nozzle is down at the part. The default method is to turn on the vacuum while the nozzle is up, but starting to move down. For light/tiny parts this can have the effect of making them
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