Nozzle life?

Subscribe to Thread

Pretty new to this... How long should you expect nozzles ... - Feb 23, 2005 by //jh0n!

We also ahve GSM's and paste on the nozzles is not an issue ... - Feb 23, 2005 by

Nozzle size is probably the main issue, but it could be a pr... - Feb 23, 2005 by

Nozzle used? Nozzle tip damaged/worn-out (that's where the ... - Feb 24, 2005 by siverts

We're using 10MPF nozzles to pick 0603 components. I think ... - Feb 27, 2005 by

Thanks for the reply. Like I just posted to the other repli... - Feb 27, 2005 by

How/where do I check the vacuum level? Thx! ... - Feb 27, 2005 by

I�m sure the 10MPF is not a correct nozzle to use. I don�t h... - Feb 27, 2005 by

First thing is you should be using a 08MPFX nozzle for a 060... - Feb 27, 2005 by SMTUser

Actually, in thinking about what someone else had posted - I... - Feb 28, 2005 by

UIC has a nozzle specifically designed for 0603's. (UIC P/N ... - Feb 28, 2005 by

At $50 vs. $880, I've got the feeling we'll be sticking with... - Mar 01, 2005 by

When you place 100's of 0603's and don't want to spend the $... - Mar 01, 2005 by

I remember Metro Nozzles mentioning that they are bringing o... - Mar 01, 2005 by Rob

//jh0n!

#32841

Nozzle life? | 23 February, 2005

Pretty new to this...

How long should you expect nozzles to last? I'm noticing that they're continually clogging with solder paste, leading to TONS of bad picks/rejections. How often should I expect to be replacing them, and why are they clogging with paste? BTW - this is on a GSM-1.

Thanks!

reply »

#32842

Nozzle life? | 23 February, 2005

We also ahve GSM's and paste on the nozzles is not an issue here. my question would be: Why is paste getting on the nozzle?

The nozzle should only come into contact with the surface of the component being placed, not the paste.

If that is the case, then you are using the wrong size nozzle, it may be overlaping the component. Look at the monitor when running production, you shouldn't be able to see the noozle tip and the component.

So double check your components and make sure the right nozzle is being used.

By the way, what noozle type is geeting past?

reply »

Brent Robinson

#32846

Nozzle life? | 23 February, 2005

Nozzle size is probably the main issue, but it could be a problem with the vacuum level too. Vacuum level should be a minimun of 20 in HG. Also verify that you have 85 PSI going into the machine. A lot of times, the paste in the nozzle is due to the fact that the part passes vision and then falls off the nozzle prior to placing that part. Nozzle still comes down into the paste without a part being present. You may want to try turning on Pre-Orient in the component definitions also.

reply »

siverts

#32851

Nozzle life? | 24 February, 2005

Nozzle used? Nozzle tip damaged/worn-out (that's where the nozzle life comes in)? Component package? Heavy component? Feeder? Do You see that component type, used by that nozzle inside the machine, or components at the wrong spot on the pcb? If so, then the component could have fallen off after the ULC, as mentioned in previous posting. Possible reasons for that: poor vaacum, wrong nozzle used, poor pick up - and this itself, could bee a number of reasons not to mention vacuum and nozzle again...ach!

To get paste in the nozzle, it must hit the pads on the pcb, and it seems that only small packages or a package with terminals right beneath the pick up area (like BGA's) could match this criteria. Take a close look on the monitor, for the x-y and theta number that comes up after the vision inspection; that will tell you how much off center in microns, the component have been picked up. If You are using lead inspection, turned it off to be able to see the offset numbers. If you don't see the numbers; set vision diagnostics to 4 or 5 (system setup).

If pick position is off more than acceptable, check feeder/consider feeder teach. Also check the filter in the nozzle. Keep us posted...

reply »

//jh0n.

#32910