jupdykeAnyone interested in working together on this project? I am planning on continuing to design and build it, but I am open to working together. I have access to most of the equipment to machine the parts. If anyone is interested we could maybe work out a deal where I machine more than one copy of parts in exchange for raw material costs.
I am still working on the design in my free time. It is mostly a thought project now. Something to think about and add details to. I find doing CAD design relaxing. Here are a few things I have been thinking about and adding details
- Updated Platens to be machined for 4 tie rods instead of 2. This way you can use either 2 or 4. If you want more accessibility you can use 2, and if you need more clamping force you can use 4.
- Added detail to how the molds will be held in place and aligned.
- Added some details for second ejector mechanism. My parts will require ejectors on both mold halve to start with. This can be optional for other peoples builds.
I also did some looking at other DIY builds to see how practical it is to build a mechanism to melt and inject pellets. Heating and melting the pellets is simple enough. I have made a few 3d printers that are melting filament, and my first aluminum mold for the Tank Chain project has heaters built in. But the injection part is a little more work. Not sure how hard it will be to build up enough pressure. I am currently thinking of using something like what DIY filament making machines use.
Something like this:
http://3dprintingforbeginners.com/how-to-make-diy-filament-for-your-3d-printer/
Anyone know a good source for augers like this?
Discussions
Become a Hackaday.io Member
Create an account to leave a comment. Already have an account? Log In.
Hi
I am working on the micro injection molding machine design, I like to have some idea exchange with you.
What kind of Collaboration tools we can use for this collaboration? please drop me a email and let's have more details discussion.
my email: yutiansg@gmail.com
have a great weekend
Are you sure? yes | no
check this out: https://hackaday.io/project/5189-shop-air-injection-molder
Are you sure? yes | no
I googled around, didn't see any obvious auger sources. Some crap on alibaba
http://www.alibaba.com/product-detail/extruder-screw-barrel-and-gearbox-set_60233623546.html?spm=a2700.7724857.29.28.g08ZOA&s=p
I still like the spiral injection screws the japanese machine uses. Would be much easier to prototype too, no 4th axis machining.
Are you sure? yes | no
I would not be surprised if a wood drill bit might work, but there is quite a bit of difference in the augers in injection molding machines. They have 3 different zones to melt and remove air from the plastic
Are you sure? yes | no
Alternatively there are many "Auger" wood drill bits available
Are you sure? yes | no
"Anyone know a good source for augers like this?"
Would a large drill bit work? Masonry bits should be long enough.
Are you sure? yes | no