What are the Juki Nozzles made of?

[d...@xmission.com]

I also want to be able to rework or disassemble boards.

I can tell from the pictures some of the Juki nozzles are  plastic, but what about the tips?

All I can tell is they are black.
Are they anodized aluminum? Steel? Carbide? Silicone? Other Rubber?...

I'm concerned about them handling the heat of pulling heated parts.

yeah, at fractions of a cent passives may not be worth the trouble BUT
I have several hundred boards for which I have full schematics and they have good silkscreen markings.

I see a real advantage to be able to pull all the components from say the LCD support section of the board and have
known components and values from a know working and stable design right at hand.

Marc

[Mark Harris]

Black nylon for the clones we get from Robotdigg and such.

--
You received this message because you are subscribed to the Google Groups "OpenPnP" group.
To unsubscribe from this group and stop receiving emails from it, send an email to openpnp+unsubscribe@googlegroups.com.
To post to this group, send email to ope...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/openpnp/bf67d1e5-360e-4766-9ede-a8d6d714e0a4%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Matt Brocklehurst]

Bit confused - Are you thinking of putting a heater on your pnp and automating chip removal?

Sent from my iPhone

To unsubscribe from this group and stop receiving emails from it, send an email to openpnp+u...@googlegroups.com.

To post to this group, send email to ope...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/openpnp/CAJMBTyQfAs7h0iPdYQy6hMfSkTZy5s9_D1pxo2bWvGuHSFbk6A%40mail.gmail.com.

[Trampas Stern]

You might want to use dispensing needles which have a stainless steel tip:

https://www.amazon.com/HUAHA-Stainless-Dispensing-Needles-Different/dp/B01KZ0MHSC/ref=sr_1_5?ie=UTF8&qid=1495482943&sr=8-5&keywords=dispenser+needle

These are often used for solder paste dispensing, and some people use for Pick and Place machines as well. 

On Monday, May 22, 2017 at 3:31:42 PM UTC-4, Matt Brocklehurst wrote:

Bit confused - Are you thinking of putting a heater on your pnp and automating chip removal?

Sent from my iPhone

On 22 May 2017, at 19:15, Mark Harris <ma...@rris.com.au> wrote:

Black nylon for the clones we get from Robotdigg and such.

On 22 May 2017 at 11:48, <d...@xmission.com> wrote:

I also want to be able to rework or disassemble boards.

I can tell from the pictures some of the Juki nozzles are  plastic, but what about the tips?

All I can tell is they are black.
Are they anodized aluminum? Steel? Carbide? Silicone? Other Rubber?...

I'm concerned about them handling the heat of pulling heated parts.

yeah, at fractions of a cent passives may not be worth the trouble BUT
I have several hundred boards for which I have full schematics and they have good silkscreen markings.

I see a real advantage to be able to pull all the components from say the LCD support section of the board and have
known components and values from a know working and stable design right at hand.

Marc

--
You received this message because you are subscribed to the Google Groups "OpenPnP" group.

To unsubscribe from this group and stop receiving emails from it, send an email to openpnp+u...@googlegroups.com.
To post to this group, send email to ope...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/openpnp/bf67d1e5-360e-4766-9ede-a8d6d714e0a4%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[d...@xmission.com]

Yes, I'm talking about adding heat to a Pick-and-Place Machine.

I had previously planned on using luer-lock type needles/dispenser as the tool head.

I have a good supply of Glass syringes of about 3~4cc that are .425" diameter

I have machine tools and can make whatever I want.
But using a 'Standard' would probably save me a ton of grief in the long run.

Once I saw what people were doing with the Juki heads I started thinking maybe that would be better.

I saw a post somewhere that 'Some Brand I Forgot' heads had carbide tips.

I am also planned to have solder paste application as an option for the machine as well.
Maybe Luer-Lock dispenser tips will be the best overall approach.

I can get them made from 100% stainless steel if necessary.

Thanks

[BendRocks]

I just turned a juki nozzle on the lathe this weekend to try and add another oring and the shavings off the nozzle were indeed magnetic...

[d...@xmission.com]

I'm concerned about melting the plastic parts in the above image.

My initial question was what the Black tip in the above picture was made of.

I presume if you were adding O-Rings you were adding them on the silver mating part on the right hand side of the above picture.

Correct?

Secondly if you are having to add additional O-Rings to get a good seal in the Juki nozzles they may be an additional 'Project' and
not the labor saving component I was hoping for.

Thanks for the info.

Marc

[d...@xmission.com]

On Monday, May 22, 2017 at 12:02:31 PM UTC-6, d...@xmission.com wrote:

[Michael Anton]

The black part on that nozzle is magnetic, so it must be metal.  Sizes up to 504 are exactly the same, but sizes 505 and up have a rubber tip to help with sealing.  I have a set of sizes 500 to 508, so I can't speak to others outside that range.  So, I think you are going to have problems with pulling larger parts if you intend to use Juki nozzles.

[d...@xmission.com]

Thanks for the info.

Sounds like the heads will be a DIY project.

I'll make Teflon or Silicone tips that I know will handle the heat if necessary.
I also have some other super high temp plastic some of the 3D printer guys use.
I forget what it is, but it very rigid unlike pure Teflon which has its good and bad points.

Marc

On Monday, May 22, 2017 at 12:02:31 PM UTC-6, d...@xmission.com wrote:

[Michael Anton]

You are probably referring to either PEEK or Ultem (PEI) regarding the high temperature plastic, as those are the two that are common in the 3D printing industry.  Teflon does soften pretty good at soldering temperatures (since the Tg is at 115C), so it might not be the best material to use.

[d...@xmission.com]

Thanks for the info.
I know pure Teflon is not very stiff and that it can handle high temps, but did not know it started to soften at such low temps.

You are probably correct on the other plastics.
I get most of my materials from a place that deals in lost and damaged freight.
The prices are dirt cheap, but you usually don't know exactly what's what.

All I know if the high temp plastic rang like bell when I whacked it.
I thought 'That's odd, I better buy it.' ;-).  

On Monday, May 22, 2017 at 12:02:31 PM UTC-6, d...@xmission.com wrote: