Crayfish sorting slide - GIF

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Oct 20, 2022, 03:42 PM
Altair

Crayfish sorting slide - GIF

Crayfish sorting slide.

<video controls autoplay loop> <source src="https://diqn32j8nouaz.cloudfront.net/shrimp_sorting_slide_bins.mp4" type="video/mp4"> Your browser does not support the video tag. </video>

Previously:

https://www.homemadetools.net/forum/...427#post200591
https://www.homemadetools.net/forum/...907#post187031
https://www.homemadetools.net/forum/...324#post101294
https://www.homemadetools.net/forum/...944#post119884
https://www.homemadetools.net/forum/...569#post107847
Oct 21, 2022, 06:35 AM
mlochala

I'm curious of how that works. Is it sorting by size or weight? How does it trigger, I wonder?
Oct 21, 2022, 10:50 AM
Frank S

Quote:

Originally Posted by mlochala

I'm curious of how that works. Is it sorting by size or weight? How does it trigger, I wonder?

I was wondering the same thing. Even played back at the slowest speed I can't see any triggering device of optic scanner. The only thing I can think of is the person putting them on the conveyor has a selector switch and triggers the door to the correct bin for each one placed on the conveyor. However that seems to be rather tedious and prone to the wrong button being pushed due to the speed they are being loaded, but again since there is not a constant even flow maybe that is how its done
Oct 29, 2022, 08:26 PM
nova_robotics

Quote:

Originally Posted by mlochala

I'm curious of how that works. Is it sorting by size or weight? How does it trigger, I wonder?

I would wager it's weighing them, attempting to get to a certain sale weight in each bucket.

I have a tiny little bit of experience with this. Years ago I worked for a guy who was part of a team that designed something similar for sorting lobster into styrofoam bins. We had a lengthy conversation about it. Turns out it's way more difficult than it seems. So there's probably a weigh scale just out of frame under one of those upstream conveyor belts. That tells the computer what the weight of each crayfish is. Now the computer's job is to try to add up weight to get to whatever sale weight each bin is. If they're selling 5 lbs containers to stores, then that's what the computer tries to achieve using varying weights of crayfish. It adds smaller and bigger crayfish to get to each bucket to the ideal weight. Sounds easy, but it turns out this is a really difficult problem. The error tends to stack up and you're left with oddball crayfish that don't fit anywhere. An I Love Lucy chocolate factory situation.