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starter
14/08/2019 at 17:07
1

@s2019
Sorry for the late late reply..
We use a Dynisco indicator UPR900 with a Dynisco ECHO melt censor and a DYMT temperature censor. It’s a quite expensive purchase…

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starter
14/08/2019 at 16:57
1

Hey  @rushabhc

200 Nm torque motor is clearly sufficient for the v3 extrusion machine.

I maybe need more details about your installation with the barrel. If the motor halt when you put the granulates in, it’s not a problem with the coupling but more with the motor itself.

What I can suppose about your problem is that the coupling of your asynchronous motor (Delta or star) is not right. It depended on the mains voltage of your installation and the rated voltage of the motor.

If u don’t got the right configuration, the motor is running but with a really low torque 🙂

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starter
15/05/2019 at 15:52
1

To build the V4 extruder, a bit more knowledge and experience will be required in machine building, but should still be able to be done by the majority of machine shops worldwide. The tools required to make the extruder V4:

– Conventional lathe (up to 100 mm stock size, +/- 1m between the centers)
– Conventional milling machine Metric taps (M4 up to M12)
– Metric pipe tap (G1/4)
– Basic hand tools
– Welding machine Brazing torch (acetylene or similar)
– Bending machine

The outline of the extruder V4 will be:

– New Screw ⌀30 mm
– Bigger Hopper
– Cooling zone for the hopper and two parts barrel to avoid melting in the hopper.

I am eager to hear / field some questions. Tell us about what you think about the outline and the tools required to make the extruder V4.

See you soon fellow PP Community 🙂

starter
15/05/2019 at 14:50
1

The current extruder is built with a 3kW motor, a screw speed controller and an exchangeable nozzle to have various output orifices.

The goal in this phase is to determine the required temperatures, speeds and other processing parameters to optimize the melt quality and extruder output. We also want to size the geometry of the nozzle through different orifice size (6-8-10-12mm) and see the output and quality on different orifice on the nozzle.
For at least a month and a half we made test by extruding beams 40X40 mm with different orifice size on the nozzle . Around 120 beams (60 PP/60PS) made with the famous @timslab.

We will finish, group all we got, and then introduce you the results we got at the end.

So stay tuned 😉

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starter
15/05/2019 at 14:41
0

Extruder Development V4

 

Hello Everyone,

My name is Vincent, mechanical engineer just arrived 2 months ago in PP V4. I am working currently with dutch engineer @peter-bas on the extruder V4.(Nate @cymek left for PP pilots in Maldives).

The current V2 extruder has been designed with an emphasis on low-cost to build, ease of finding parts and basic tools. The extruder V4 will be designed with an emphasis on reliability, predictability in function and build quality in mind.

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