Electronics Forum | Sat Aug 26 09:40:27 EDT 2017 | v037022
Dear, My current method incluce steps below: 1. take out all screw 2. Put them into alcohol 3. Clean it with bemcot paper which wet by alcohol 4. Dry it by air gun 5. Checking by Dino camera. It took so much time. Now i want to do it automatic to red
Electronics Forum | Fri Jun 15 16:18:28 EDT 2001 | Dave G
Timed an actual Change today. It took about 6 min to actually change the head and then about a 2 minutes to start printing again after installing the new stencil & loading the program for the next PCB. The whole thing including stencil swap out & pr
Electronics Forum | Thu Aug 17 21:56:05 EDT 2017 | v037022
Dear experience members, Now we are using permelex squeegee blade and we do cleaing it after printing 24 hours. Actually, it took very long time to clean. we need to take out one by one screw and use bemcot paper/ alcohol to clean solder remaining on
Electronics Forum | Thu Aug 12 22:31:10 EDT 1999 | Dave F
| Hello, | | Can any netters suggest what critical parameters should be considered & what are there assoicated impacts for a solder paste printing process ... | | B.Regards, | Felix | Felix: There are some 30 variables that affect SMT solder qua
Electronics Forum | Thu Oct 11 09:54:30 EDT 2012 | rgduval
I've inherited an old HTI screen printer, and have been told that it was in operation before it was sent to my shop. I'm now trying to get it working, but, with no knowledge of the printer or the control system, I keep banging my head against it. A
Electronics Forum | Thu Jul 22 17:30:53 EDT 2021 | proceng1
SWAP blades from front to back. Make sure the tooling/ board supports are arranged correctly. Is this a foil stencil on a frame, or a complete framed stencil? I've had worn out foils that "roll" with the blade in one direction worse than the other.
Electronics Forum | Fri Feb 02 12:48:29 EST 2024 | spoiltforchoice
Do it all the time. With an automatic printer you would have your two images at opposite edges of the stencil and to switch between them you would remove the stencil and rotate it so the one you want is at the front. Naturally you need to make sure t
Electronics Forum | Mon Jun 13 02:54:18 EDT 2005 | Adnahn
Is your machine programs gang picking? Work out a machine set-up for commonly used components to have a fix location on the machine ( preferably on the side the operator spends the least time ).Most of your change overs take place on the front of the
Electronics Forum | Tue Jun 01 07:26:55 EDT 2004 | johnwnz
Alistair, your paste deposit is controlled by a few things: Stencil thickness Squeegee pressure Squeegee speed Print gap in 99 out of 100 applications for paste printing you would have a print gap of 0 i.e. on contact printing where the PCB is in fu
Electronics Forum | Thu Jun 17 21:24:32 EDT 1999 | Dean
| first of all what is the technical term for the small amount of solder on a plated pad. we are getting poor screen printing gasketing on a 20 mil qfp due to this solder not being even or too high in spots and not covering the length of the pads. an
winsouce.jpg)
