Problem with abs extrusion

[Вадим Пьянков]

Hello!

We encountered a problem abs plastic extrusion.

We used plastic LG ABS HF380(http://kongwui.com/uploadfile/2011/0917/20110917123636492.pdf).

We tried the temperature from 210 to 250 degrees.

Looks like the main motor power is not enough, we made ​​a video about it — http://www.youtube.com/watch?v=6k0Vmz47pT0

Please give us advice what to do. Suggest brand plastic that we can use. 

Maybe we should replace the main motor with a more powerful? If we set such a motor - http://www.mabuchi-motor.co.jp/cgi-bin/catalog/e_catalog.cgi?CAT_ID=rs_540sh that solves the problem?

Thanks!

[Herb Winters]

if you watch EB-5 build video about 30 seconds into that video mark states that for ABS they sugest 243 C my experience with pla shows that there numbers might be a little low.

you should try a range starting at 243 degrees C and go up to 255 C you should find a good temp there also if that does not work check the spec and see what the melt temp is. it may be higher than the stuff mark sells.

that is why I am using his pellets to start out with.

also another thing is you must get the unit up to temp for 5 minutes before you start the main motor the reason is you not only need the extrusion metal at temp but you also need all the plastic in the extrusion melt area to be at temp so that it can help transfer heat to the new meterial.

hope this helps

[Вадим Пьянков]

We heated machine for about 30 minutes at 255 degrees, but all the same motor can not rotate the screw.

What about upgrading to a more powerful motor. Is that possible?

суббота, 4 января 2014 г., 21:24:36 UTC+4 пользователь Herb Winters написал:

[Herb Winters]

okay do you have a volt meter can you measure the voltage on the Red/Black wires that come out of the power Supply. while the motor is stalled they should be 24V if to measure the voltage at the motors Red and Black leads if they are also 24VDC

then I would guess the motor is bad. and you will need another one.

changing out the motor should not be needed as I have not heard of anyone having problems with the motor not having enough power when everything is working right however there was a report of a motor that had a problem with the gearbox so that it would not turn at all. in this guys case he could remove the chain and then run the unit and the motor would get hot but would not turn the shaft. I am pretty sure he fixed it by forcing the shaft to make one turn then it was free and worked fine.

My motor ran hot so I added cooling however it had plenty of power so much so that it the temp was too low the motor would skip on the chain.