Over the past few days, Marcin and I have been working on the design of The Liberator 2 – the second prototype of our high-performance CEB press. The design is now up for review. The main changes are an enlarged, stationary hopper structure, guide rails that use cam followers, and an anti-bridging auger in the mouth of the hopper.
The main review point is the cam follower roller bearings that guide the motion of the soil-loading mechanism. We’re using the cam rollers to hold the soil loading mechanism in position to minimize friction. In the previous design there was plastic liner below the loader and in the compression chamber to protect the metal pieces from rubbing, but the liner was a failure mode. Rocks would get under the liner and it would pry off. Is there a better way to do this?
The hopper can be wheelbarrow loaded, or with a larger plywood hopper attached it can be tractor loaded.
Also I made an animation of the function, which will be automated with an Arduino-based controller. The controller will also be responsible for selecting uniform brick thickness.
You also download the blender file at the OSE wiki page. Blender is a multi-platform open source modeling program, so anyone can use it on almost any operating system.