Electronics Forum | Mon Sep 21 23:42:15 EDT 2009 | dontfeedphils
Anytime we use a glue/wave solder process we print the adhesive using a stencil and our screen printer and we have excelent results. It is in no way a difficult process.
Electronics Forum | Tue Sep 22 08:53:37 EDT 2009 | stepheniii
The only time I ever saw problems with stenciling glue was when one know it all operator was using IPA to clean the stencil. He didn't seem to be able to understand that alcohol was a curing agent for that particular glue. But other than that, as l
Electronics Forum | Wed Sep 23 09:18:21 EDT 2009 | stepheniii
Yes, after you move SMT to before PTH like everyone else. I'm guessing that you only have SMT on one side of those boards? And you must be an OEM. A privately owned one? How did you ever start doing PTH before SMT?
Electronics Forum | Wed Sep 23 19:07:31 EDT 2009 | sbayeta
Thanks to all for the great replies. I guess we'll buy a stencil for a few hundred bucks and try this. Anyway, nobody expressed an opinion about the "decoupled" glue dispensing. What do you think about this idea? Thanks again for your help. Best r
Electronics Forum | Wed Sep 23 21:40:29 EDT 2009 | davef
We apply temporary solder mask off line, using a programmable dispense head. Works fine. Purchasing a placement machine with a dispense head usually only works-out well for the sales-type. Not in every case, but usually.
Electronics Forum | Thu Sep 24 17:36:12 EDT 2009 | davef
Both of the articles talk about pockets cut in the contact side of the stencil that correspond to components [or PTH leads] that would allow PTH first, glue second, and finally second-side SMT placement.
Electronics Forum | Mon Sep 21 22:56:19 EDT 2009 | edison
Hello, everyone. Does anyone know the exact difference of SIEMENS SIPLACE PCB-optical System KST PCB camera between P/N 00344065-03 and P/N 00344065S03? Thank you for your reply in advance.
Electronics Forum | Tue Sep 22 22:59:10 EDT 2009 | edison
Thank you for your help. I will contact you once I need to buy one.
Electronics Forum | Tue Sep 22 23:53:01 EDT 2009 | rohitfast
Thnaks Davef..... Next time i will take for this. Actually i have tried but not found any exact answer for the same.
Electronics Forum | Tue Sep 22 10:05:00 EDT 2009 | roland_grenier
Does anyone know how to calculate solder paste volume required to run a PCBA on an SMT line? I'm looking for a solder paste volume model which include paste waste. Roland
Manufacturer of PCB depaneling and PCB soldering machines since 2005, products include CE approval V-groove PCB depanelizer, PCB router, PCB punching machine, laser depaneling, hot bar soldering machines and soldering robots.
Liwu Industrial Park, Yuanzhou Town, Boluo
Huizhou, China
Phone: +86-138-29839112
.gif)
