Some years ago I did mold changes with a over head crane and my average time was 15 mins or less for last part to first part off, the fastest change over I did was 6 mins, this was blowing out the water lines, and removing hoses, we have hydraulic clamps with positive stops on most of the machines with a few mag clamps, I can't imagine how fast I would have been with this system.
It's very nice machine that's my machine i operating when i was working at Al Watania plastic very smooth running at and setting adjustments at mold loading all automatic clamping
you would be surprised, worked for a company making stuff used in supermarkets, stores all different price tags rails, holders, separators, gravity bins and whatnot. Over 350 molds and many colors, inserts. Practically every day we would make different color or version samples for the clients. But the real orders were sometimes 30 minutes run time too.
now hopefully that material handler isn't on tiktok in the bathroom when you need him at the same time.. or hopefully your barrel heats don't have to go from 500 to 400, or lets say you have to actually use rust protect and mold cleaner, now lets say you have to actually change the EOA as well.. I can do a MC in 30 minutes on a 500ton alone. 15 with a second person that's 1/2 inch quick disconnects and hydraulic for cores/ejectors and that including changing the EOA on a sepro and non magnetic base. Even faster if i'm going to a sister tool and using the same method of clamping (direct to direct or clamp to clamp with same thicknesses) 2500 ton, yea that'd take 2.5 hrs on a 40 ton tool but that's partly due to grabbing aux units from other presses and hopping up and down grabbing 6 hr cable sets and torqueing each bolt down to 650.
200 ton roboshot that takes 3 minutes just for the die height alone used to take 25min with k/o bars.. people just don't know how to stage for the next changeover, if you have everything you need they're pretty quick.
