Re: [CAD_CAM_EDM_DRO] HP 7475A

Peter,
Strip off the pin holder and up down solenoid. Machine a bracket that will
hold a small slide [about .5" wide 1.5 H. with .75 movement] and a holder
for the paste. allow the pin up/down signal trigger the dispenser and allow
the air to pushout the paste and drive down the small air cylinder [dashpot]
at the same time. You may need a small spring to return the cylinder.
Paul

----- Original Message -----
From: "Peter Homann" <peter.homann@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, May 06, 2002 3:34 PM
Subject: RE: [CAD_CAM_EDM_DRO] HP 7475A


> Paul,
>
> Thanks for your comments. Maybe the idea isn't crazy after all. It has
> inspired me to start the project. Do you have any more information to add?
>
> Thanks,
>
> Peter Homann
> <mailto:peter.homann@...>
> Work : +61 3 8530-7755
> Adacel Technologies Ltd Fax : +61 3 9596-2960
> 250 Bay St, Brighton 3186, VIC, AUSTRALIA Mobile : 0421 601665
> http://www.adacel.com.au Australian Software Engineering Excellence
>
>
> > -----Original Message-----
> > From: Paul Weber [mailto:pbweber@...]
> > Sent: Monday, 6 May 2002 5:04 PM
> > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subject: Re: [CAD_CAM_EDM_DRO] HP 7475A
> >
> >
> > Pete,
> > The firm I just retired from used that method for production
> > for years. We
> > found that the pin carrier couldn't support the paste syringe
> > and when we
> > placed the syringe outboard and run a hose to the needle the
> > flux would
> > separate from the paste. Our solution was to replace the pin
> > carrier with a
> > tiny slide and air cylinder that would lower the paste needle
> > on demand.
> > Paul Weber
> > ----- Original Message -----
> > From: "Peter Homann" <peter.homann@...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Sunday, May 05, 2002 9:53 PM
> > Subject: RE: [CAD_CAM_EDM_DRO] HP 7475A
> >
> >
> > > If I can get hold of one of these plotters I'm going to try
> > ands make a
> > > solder paste dispenser machine for SMT pcbs. The idea is to use a
> > commercial
> > > solder paste dispenser such as;
> > > http://www.zeph.com/zt-5100.htm
> > >
> > > The dispensing nozzle should be light enough. All I need to
> > go now is find
> > a
> > > source for the plotter in Oz. (hint, hint)
> > >
> > > Cheers,
> > >
> > > Peter Homann
> > > <mailto:peter.homann@...>
> > > Work : +61 3 8530-7755
> > > Adacel Technologies Ltd Fax : +61
> > 3 9596-2960
> > > 250 Bay St, Brighton 3186, VIC, AUSTRALIA Mobile :
> > 0421 601665
> > > http://www.adacel.com.au Australian Software
> > Engineering Excellence
> >
>
>
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