compliments on the site and this projects! I’m Peter-Bas Schelling, a recently graduated mechanical engineer with a passion for designing and fabrication of machines and. Kind of a hobby, and occupation as wel. Certainly no newbie in machine fabrication
I’ve started to make the Injection, Extruder and Compression recently! These will be used by the Plastic Soup Foundation for their recycling project.
I’ve designed and built a Rubber Calender for cooling a rubber flow from an extruder. This is part of a devulcanisation process, to allow the use of used tire rubber in new car tyres! Might be interesting for everyone here!
@peter-bas man these machines look so awesome, especially the compression oven. How did you manage to get an oven so big? Its big enough to bake a cake for entire city
Sounds good to me Dave, i’m happy to help you with such a development. I’ve made a calendering machine as shown in the first post. Is it something like that? Let me know!
Great! We are currently looking into developing a bigger 5th machine for Precious Plastic for making sheets. Currently in the process of sourcing people to develop and finalizing details such as budget and timing. Let me know if you are interested and i’ll be in touch if we have more information!
Thank you for the compliments Dave! I managed an output of approx. 3 kg per hour.
I’m going to help the Plastic soup foundation in oktober during some events using the current machines. There were talks about some future builds for a similar project in another part of the world. Although that is not yet certain. So I’m still involved in some ways.
A few other companies have shown interest as wel, so I might have to build 1 or 2 more extruders before the end off the year. I will keep developing as well.
I’m always interested to help you with machine-devolopment projects. So let me know if any interesting comes up! You’re welcome to contact me
thanks for those images and feedback! It is a nice theory, and your output seems pretty good, big tower! Are you still involved in the project or a freelance machine builder that finished his job? We might need some machine-development help in the future, good to know if there are qualified people around
The concrete drills transport a bit less volume because the channel depth is less compared to the wood auger drills. In my mind, that causes more friction and helps plasticizing of the granules. Although it’s just a theory in this stage.
Screws in injection moulding machines have decreasing channel depth in the later part of the screw to provide pressure build-up/ friction and mixing. This is hard to get using any drill.
I did make the barrel longer yes, and use a longer drill. Longer screws provide more mixing, which is wat you want for compounding.
Hereby the larger pictures. Couldn’t find them yesterday haha. Nice to hear that you want to share them!
Thanks for sharing those changes! Any reason to choose for a concrete drill, or simply because its easier available? And did you made the barrel longer or does it just look like that? Overall they look really well made, better then my own machines!
Do you happen to have the images in larger format, or other large images? Would love to share a few on http://lab.preciousplastic.com/
It had to disassemble the injection but it did fit on one box.
I had a lot of difficulties with the straightness of the barrel with the first version. This was partly caused by using the seemless gaspipe (bit really straight}. And welding on the barrel caused stresses and deformation as well. The most significant changes i’ve made to the design were:
– Using a concrete drill as screw (without the cutterhead of course)
– Production of a barrel using long hole drilling. This insures a straight and smooth barrel
– Using clamps instead of welded fixtures to secure the barrel. I’ve found some aluminium clamps which are normally used for stage building which did the trick.
– Made everything fully adjustable
That looks really nice @peter-bas What about that second compounder version, i’m curious! Would love to hear your feedback and things you learned during the building proces. And did everything fit in that one wooden box?
It’s been a while but i’ve built the extrusion, compression and Oven press for the plastic soup foundation. They are currently underway to Bonaire to create more awareness for plastic recycling!
What about that second compounder version, i’m curious! Would love to hear your feedback and things you learned during the building proces. And did everything fit in that one wooden box?
