Unfortunately the MY19 does not have blow off, the newer Mycronic machines
do, but not the MY19. We tried a larger nozzle, but it didn't work. I tried
baking them at 170 F. for three hours, but it didn't help. Called Mycronic
and about the only thing he could tell me is: "Yep, Cree LED's are famous
for doing that...". The really frustrating thing is that we don't have a
problem with the amber LED that is exactly the same package.

So we're hand-placing the damn things, at 113-per...can't machine place
them, whaddya gonna do?

Steve

On Tue, Aug 4, 2020 at 2:03 PM Roger Mack <[log in to unmask]> wrote:

> Agree with this, larger nozzle does the trick.
>
> Soft top much more reliable. We found the old hard top ones very moisture
> sensitive in assembly.
>
> Roger Mack
>
> -----Original Message-----
> From: TechNet <[log in to unmask]> On Behalf Of Steve Herring
> Sent: Tuesday, August 4, 2020 2:23 PM
> To: [log in to unmask]
> Subject: [EXT] Re: [TN] EXTERNAL: [TN] Cree Blue LED (PN#
> CLM3A-BKW-CTBVA463) Sticking to Nozzle...
>
> May help to have a nozzle that touches the outside of the plastic.
> Increasing blow-off can help.
> Don't you just love those soft top LED's
>
> Steven E Herring
> Director of Engineering
> Pennatronics Corp
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Vargas, Stephen M
> Sent: Tuesday, August 04, 2020 3:19 PM
> To: [log in to unmask]
> Subject: Re: [TN] EXTERNAL: [TN] Cree Blue LED (PN# CLM3A-BKW-CTBVA463)
> Sticking to Nozzle...
>
> Steve:
>
>      I'm not sure of the capability of a MY-19 machine, but is there a
> blow-off adjustment that will help remove the part from the nozzle at
> placement? If so, can you increase this value when placing the LED?
>
> Regards,
> Steve Vargas
>
> If you don't have time to do it right, when will you have time to do it
> over? John Wooden
>
> Lockheed Martin RMS-Rotary and Mission Systems Polaris Contract Mfg.
> 15 Barnabas Rd
> Marion, MA 02738
> 774-553-6192
> [log in to unmask]
>
>  Please consider the environment before printing this e-mail
>
> -----Original Message-----
> From: TechNet <[log in to unmask]> On Behalf Of Steve Gregory
> Sent: Tuesday, August 4, 2020 2:21 PM
> To: [log in to unmask]
> Subject: EXTERNAL: [TN] Cree Blue LED (PN# CLM3A-BKW-CTBVA463) Sticking to
> Nozzle...
>
> Hi All,
>
> We have these Cree Blue LED's (PN# CLM3A-BKW-CTBVA463) that keep sticking
> to the $%$#&@ pick and place nozzle. We have a MY-19 and have tried
> changing timing, nozzle diameters with no luck. We place an amber LED of
> the same series that we have no problems with except for one or two once in
> a while.
>
> I've tried dabbing a little Freecote mold release compound on the tip of
> the nozzle, and now I'm putting the reel into a 170F oven to see if baking
> them for a couple hours will help.
>
> Does anybody have any other ideas that might help?
>
> Steve Gregory
>
> --
> Steve Gregory
> Kimco Design and Manufacturing
> Process Engineer
> (208) 322-0500 Ext. -3133
>
> --
>
>
>
> This email and any attachments are only for use by the intended
> recipient(s) and may contain legally privileged,  confidential,
> proprietary or otherwise private information. Any unauthorized use,
> reproduction, dissemination, distribution or other disclosure of the
> contents of this e-mail or its attachments is strictly  prohibited. If you
> have received this email in error, please notify the  sender immediately
> and delete the original.
>


-- 
Steve Gregory
Kimco Design and Manufacturing
Process Engineer
(208) 322-0500 Ext. -3133

-- 



This email and any attachments are only 
for use by the intended 
recipient(s) and may contain legally privileged,
 confidential, proprietary 
or otherwise private information. Any 
unauthorized use, reproduction, 
dissemination, distribution or other 
disclosure of the contents of this 
e-mail or its attachments is strictly
 prohibited. If you have received 
this email in error, please notify the
 sender immediately and delete the 
original.