About CP45 Nozzles

[Michel Goto]

Hello everyone,

I’ve been tasked with assembling a machine for my friend and have a question about nozzle selection.

Lately, I’ve noticed that many machines are using CP45 nozzles, such as:
Pandaplacer, AFARCO iRON PnP, LumenPnP, NeoDen YY1 (though not for openPNP)

Are there any advantages to using Juki nozzles or CP40 compared to CP45?

Thank you!

[bing luo]

The structure of CP45 makes it the easiest to achieve automatic replacement. If your PNP needs to automatically replace the noise feature, then choose CP45. If you don't need automatic replacement function, you can choose either one.

Replacing Juki's nozzle.  Requires large traction force, If your machine is not heavy enough, it will have an impact on the stability of the machine.

Replace the nozzle of CP40. Not easy to align，And the two rubber rolls on the holder are easily worn out.   Juki and CP45 don't have this problem because they both use steel balls to lock the nozzle.

[Dave McGuire]

We recently moved from a machine that uses CP40 nozzles to a machine
that uses CP45s. I have to say that I strongly prefer the CP45s to the
CP40s.

The two largest advantages as I see with CP45s thus far are the
retainer mechanism and the spring-loaded telescoping mechanism.

The retainer in the CP45 is based on a detent and a set of
spring-loaded ball bearings, as opposed to a friction fit typically with
two O-rings. In this mechanism, the O-rings wear out rapidly and quite
a lot of force is required to pick up a nozzle. Also, the Z-axis
repeatability suffers, sometimes badly, when a nozzle is picked up with
different amounts of penetration from the head. The CP45's detent +
sprint-loaded ball bearings mechanism has excellent nozzle retention
with very light pick-up force, and the detent offers excellent
positional repeatability in the Z axis.

The spring-loaded telescoping mechanism uses a spring with very
little tension, which makes it much easier to mash components down into
the solder paste without hitting the PCB too hard.

All in all, I find the CP45 design to be much easier to handle and
much more forgiving than the CP40. Granted, though, that this is with
five years and hundreds of production runs on a CP40-based machine and
now one month and two production runs with CP45s.

-Dave

--
Dave McGuire
McGuire Scientific Services, LLC
New Kensington, PA

[Satya Gupta]

I have to confirm one thing, the nozzle holder for CP45 does not fits nema8 stepper. Correct?

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[bing luo]

We manufacture all three types of nozzles and holders. For large precision PNP like SMT factories, they have no disadvantages. Usually, each manufacturer only uses their own designed nozzle.   

So the drawbacks I mentioned in the picture are only for DIY PNP. The CP45 is definitely the most suitable for openpnp, as it is the easiest to replace the nozzle.

Juki has many more PNP devices than Samsung, so we often see Juki's  holder  and  nozzle,  but rarely see CP40 and CP45's.

As our PNP kit uses  name8 stepper motor, its output shaft is a 5mm diameter unthreaded shaft. So all the holders  we manufacture are compatible with this Name8 stepper motor.  

Special note： For CP45 and CP40 , this specification  holder   is rarely used, so you may not be able to purchase them. What you can usually buy is the  holder with a 6mm external thread, which is compatible with Samsung's PNP.

[Satya Gupta]

Bing do you have holder for 20 motor for CP45 nozzle??

To view this discussion on the web visit https://groups.google.com/d/msgid/openpnp/c4a8b3ff-ab87-44a1-a313-3b60e5d888c5n%40googlegroups.com.

[bing luo]

The black holder is compatible with 20 motors(nema8).

[Satya Gupta]

Alright, I will talk with you about it later

👍

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[bing luo]

I'm not sure if your lever structured mounter can automatically replace the nozzle,  Because its upward movement relies on the traction force of the spring rather than the stepper motor, hope someone with experience can give you an answer.   I haven't tested leverage before, I initially imitated  Peter Betz .

[SM]

@Bing  why is your CP45Neo Holder so long?

Just out of curiosity, i had CP45Neo holders (made by jlc) for testing purposes and was then quite disappointed that the runout of the CP45Neo nozzletips was often worse than that of the cloned Juki nozzletips, which cost half as much.

Although the advantages of the CP45Neo nozzletips are clearly the lower height, less space for the nozzletip garage and far less force required to change them, they were not convincing and so i still haven't changed my systems.

With the simple Juki nozzletip holders (with three balls), it is often sufficient to replace the rubber, which is far too strong, with something smoother - in my case with several layers of children's balloon sections

[bing luo]

This CP45 holder was customized, so its length is longer than yours.  When adding nozzle, their total height is consistent, so you can freely choose between juki and CP45.   If it is only 20mm long  as  your, it cannot achieve this.   

[Michel Goto]

Hi,  everyone.
Thank you for the detailed explanation about CP45.
It was very helpful!

I would choose to adopt the CP45 because the auto-change function of the nozzle is absolutely necessary.

I will probably buy a set of the heads in the picture you showed above.
I am wondering where to buy quality nozzles.....

[Oskar P.]

Hi everyone,

does anyone know where to buy a holder like the one shown in the picture for the CP45 nozzle?

[bing luo]

I have already put these accessories on my online store for sale  

   https://www.microsmt.com.cn/