Hi Larry,

Thank you for your thoughts.
One of the scenario here is we have 4-up 8"x 8" panel size.
This board is loaded with BGA's back to back and couples of tall
components on the 1st side.
One of my concern is how to get a stable panel during paste printing
without any compromise of potential damage with sensitive components.

Thank you.

Ernesto


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Larry Dzaugis
Sent: Thursday, December 12, 2013 10:20 AM
To: [log in to unmask]
Subject: Re: [TN] Pneumatic Board Support Tooling for Solder paste
printers - Bayesian Filter detected spam

There are several brands out there.
Prefer the ones with more pins per inch and automated setting.

Definately cheaper than having nests made if there is product mix.
faster than arranging manual pins and less likly to be set up wrong than
manual pins. Too easy for hard pin to chip a component.

Several caveats:
A nest may provide superior support if there is enough area to touch
PCB.
If there is a small range in PCB width than the bar location does not
change much.
Ran 5 inch and 10 inch wide PCB's and needed to add and remove bars to
suppport PCB. There has to be enough room that the supports don't get
jammed when the narrow PCB's are run. The wider PCB's may need more
support.

Must maintain toooling. Rubber tips fall off, pins stick and fail to
support PCB or drop out of way, tips get dirty and transfer solder
paste, repostioning not done for PCB width changes. Same as the rest of
the line, don't take care of it and it will bite you.

Solder can get on the pins and transfer to the bottom side of PCB. Care
in housekeeping and awarness of any pin in paste locations are
necessary.
Spent time chasing random solder balls on bottom side, learned to keep
close eye on tooling. The rubber pins that touch PCB are more difficult
to clean than the manual support pins. The bottom side had been though
AOI and x-ray. The problem can show up after the line is changed over
after a test failure. The same can happen on other types of tooling,
this style had a higher incidence of this problem.


On Thu, Dec 12, 2013 at 7:46 AM, Bush, Brien <[log in to unmask]>
wrote:

> Ernesto,
>
> We use Ovation Grid Lock system. Very quick and easy to use and
maintain.
> We have been using them on
>
> All our Dek machines for the past 10-15 years now. We have not seen 
> any major problems with them.
> http://www.ibesmt.com/GridLock-Board-Support/SMT_Accessories/1378/SMT.
> aspx
>
> I understand your pain all too well of manually locating pins.
>
> Good luck.
>
> Best Regards,
>
> Brien Bush
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Rueda, Ernesto
> Sent: Wednesday, December 11, 2013 8:03 PM
> To: [log in to unmask]
> Subject: [TN] Pneumatic Board Support Tooling for Solder paste 
> printers - Bayesian Filter detected spam
>
> Hello TechNet Gurus,
>
>
>
> I would like to ask your recommendation or any thoughts about your 
> experience with pneumatically operated board support tooling for 
> solder paste printers.
>
>
>
> We build double sided densely populated boards and the set-up time for

> the 2nd pass takes longer time.
>
> We use the regular pin supports and manually locate them where there 
> are blank spaces between the components.
>
>
>
> The price is expensive for 5 older MPM Accuflex printers and investing

> more capital is certainly a question to buy-off these support tooling.
>
>
>
> Thank you in advance.
>
>
>
> Best regards,
>
>
>
> Ernesto
>
>
>
> Ernesto V. Rueda, CEAS(tm)   |   PELCO by Schneider Electric   |   SMT
> Process Engineer
> Phone: +1 559-292-1981 ext. 3848  |   Fax: +1 559-388-3781  |
Mobile:
> +1 559-333-3913
> Email: [log in to unmask]
> <mailto:[log in to unmask]>     |   Site:
> www.pelco.com
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> 2D
>
0118FCA00A024D164B80000003D2FB10000074F3E4A019C0E428C5726FC9D98267600000
> 2A0A5720000/www.schneider-electric.com/buildings>    |   Address: 3500
> Pelco Way, Clovis, CA  93612-5699 USA
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