Re: Molding sticky substances

Picture a star plate.  Both sides are movable, and teflon coated.  The part
of the star plate with holes also has channels that allow composition to be
pushed in, into the holes.  The 'ejector' (normally just has a bunch of
cylinders), rises above the entry holes, then pushes the injected comp DOWN
onto drying surface (anti stick too).  The drying surface is
conveyer-belt-like.  I'd imagine both the hole plate and cylinder plate
would move sineusoidly, and would make contact with the conveyer belt for
~1/4 of the cycle.  Does this clarify?

Mark D.


"Lloyd E. Sponenburgh" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
>
> "PiRho Tech" <[EMAIL PROTECTED]> wrote in message
> news:[EMAIL PROTECTED]
> > Why not a piston method of the same - teflon (or not) coated cylinder
> holes
> > (sizes and shapes of your taste).  A cylinder of the same shape
oscilates
> up
> > and down, it also having a non-stick 'bottom' surface.  meanwhile, in
the
> > 'up stroke, a small amount of the desired compound could be injected
from
> a
> > side port.  the cylinder would press the goop down, and the bottom
already
> > being on a non-stick sheet, a shape of your choosing would be
> > 'pressed'/formed.  The mold could then retract, while the cylinders
> > continued to press slightly down while the mold retreated.  How boot
that?
>
> I don't think I picture it.  Could you do expound a bit, or provide a
rough
> drawing?
>
> If you're describing a 'cut-off' type mold, where the comp is injected
into
> a platen that slides against a nozzle with matching holes, then I
> understand.  But it won't work with material that is so sticky it re-bonds
> to itself upon contact.  It works fine for automated pumping of comets and
> stars made of a fairly dry composition.
>
> LLoyd
>
>