New toy - Arburg injection moulder

[gavztheouch]

Tonnage is the force applied to clamp the mold together. The bigger the mold the more tonnage you need to hold the mold together and prevent the plastic from running out of the shut lines ( flash). This machine is too small to make a standard builders buckets, a limiting factor for the part size is the distance between the tie bars. If the bars are too close together you can't get the mold into position. The machine would need to open up wide enough to eject the bucket.

Injection pressure is another factor, bigger machines can squirt more plastic before the liquid plastic begins to solidify. If you have thin walled parts this is even more important as the thin areas will cool faster and block any more plastic getting in to fill the mold.

[JAZZCNC]

It's also a 5yr old thread and probably in a scrap yard now. .

[Robin Hewitt]

bigger machines can squirt more plastic before the liquid plastic begins to solidify.

You don't have an injection speed control? How passé


Hi Progomez

You want to make sure you get a copy of the manual with your moulder, without that you are totally screwed.

Depending on the diameter of the plasticizer screw fitted the manual will give you the shot volume. I have an 18mm screw which gives me usable shot volume of 19cc's.

good luck

Robin

[gavztheouch]

Do you still have this machine Robin, did you ever make a mold for it?

[Robin Hewitt]

I still have it, I vastly underestimated mould making but I have not given up yet

[magicniner]

How much stuff do you have stored on top of it?
:-)

- Nick

[Robin Hewitt]

How much stuff do you have stored on top of it?

You probably won't believe this, but last time I looked, one dust sheet.
I bought a box full of spare parts for it off ebay last week so I haven't given up yet