OT: Machine

theripley · Apr 6, 2018

Hi all.

Do you know any machine that can take out the molded transparent plastic without scratching the black one?

The transparent plastic is known to be grilamid.

Any idea will be greatly appreciated. Thanks.

CommissioningMan · Apr 6, 2018

Seems more like the black plastic needs to be taken out of the Grilamid mold?
Are either of them flexible? Otherwise I don't see how you can remove either one, without damaging at least one part.

If you need to fixate the black tube, you could insert something like an inflatable tube into the black tube?

Aabeck · Apr 6, 2018

How about making a fixture for an arbor press that holds the clear plastic with the black tube pointed up, securely holding the bottom of the clear part.

Then make a head for the arbor press that fits inside the black tube to hold it so it does not deform and a flange presses on the top of the tube and pushes the black part out of the clear part.

BryanG · Apr 6, 2018

Before thinking about a machine to do the job, how do you do it manually? If you can't figure a way to do it manually then you will never get a machine to it.

Air pressure doesn't tend to scratch things but can be a bit weak, water pressure can move mountains.

theripley · Apr 9, 2018

BryanG said:
Before thinking about a machine to do the job, how do you do it manually? If you can't figure a way to do it manually then you will never get a machine to it.

According to them, they do it through machining. However, they are complaining of damages on the black.

BryanG · Apr 10, 2018

So as I said, can you 'blow' them out, air won't scratch. The clear plastic has grooves that would be easy to grip and hold a seal against the end.

AutomationEngineer82 · Apr 10, 2018

Sorry for using this thread for something not related. But I am sick and tired of searching this homepage for a button or link with which I create a new posts. I already now how to reply to other posts. I have spent ten minutes now finding practically anything BUT that funciton.

rdrast · Apr 10, 2018

AutomationEngineer82 said:
Sorry for using this thread for something not related. But I am sick and tired of searching this homepage for a button or link with which I create a new posts. I already now how to reply to other posts. I have spent ten minutes now finding practically anything BUT that funciton.

Upper left. "Start a new thread".

theripley · Apr 10, 2018

BryanG said:
So as I said, can you 'blow' them out, air won't scratch. The clear plastic has grooves that would be easy to grip and hold a seal against the end.

Grimalid cannot be blown out, it is non-flexible.

We are trying a cutter this time. I will keep y'all posted.

Mad_Poet · Apr 10, 2018

Is the transparent part brittle?
If so one might try 'scoring' the transparent part around the 'elbow'
then crack it apart and separate it.
Poet.

kekrahulik · Apr 10, 2018

Liquid Nitrogen and a careful tap of a hammer?

Lare · Apr 10, 2018

inner part don't look special. Isn't it available without clear outer part?

BryanG · Apr 11, 2018

The obvious question isn't 'how to get the part out', it is 'why manufacture it like that in the first place?' Putting that much effort and material in to making something that you are just going to throw away is wasteful and bad for the environment. They really need to look earlier in the production process and find a better way.

shooter · Apr 14, 2018

a very simple tube is enough, just buy it, or call the company that makes it as it is out of two parts fabricated.

theripley · Apr 15, 2018

During re-processing, they only need the black part. I think the black part is more expensive to produce that is why they wanted to re-process it.

As for the liquid nitrogen, it is worth a try. I will buy a liquid nitrogen & see if it will not affect the black.

By the way, I am attaching pictures after we use cutter in trying to separate the two. It makes major scratches, which is definitely not acceptable

OT: Machine

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