2016-10-15 22:33 GMT-03:00 John Kasunich <jmkasun...@fastmail.fm>: > Injection pressure will be trying to force the two sides of your mold > apart. > That's why injection molds are made of tool steel, and injection machines > have VERY sturdy construction to hold the mold closed. I saw a machine > that might be big enough to make your parts - the mold closing cylinder was > about 2 feet (0.6m) in diameter, and the four steel tie-rods that held the > machine together against the clamp force were about 100mm diameter. > > Could you make it out of four strips with some kind of joining at the > corners? >
Hello John. Yes the idea is to machine the four strips and then joing them strongly. To clamp the mold I was thinking about mechanical ways like eccentrics or may be screw clamps. That way I can hold the mold together when the injection takes place. I really don't worry about the time consumption on open the mold and close it again. The concerning part I have is if It's a good idea to move the pistons for the injection with a screw and a common 3 phase AC motor. My idea is to load the piston, wait for the plastic to reach the temperature and then inject no less than 30 seconds. I probably have to preheat the mold too. -- *Leonardo Marsaglia*. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
