question

Gregary G avatar image
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Gregary G asked Gregary G edited

Combining Stacks

Hello everyone,

Simply put, what I am trying to do is:

  • Stack boxes on a pallet to make a 'layer'
  • Convey a 'layer'
  • Stack those 'layers' on top of each other to make a 'stack'
  • Convey a 'stack'
  • Unstack those 'stacks' into 'layers'
  • Convey the 'layer'
  • Unstack those 'layers

I assume my issues come from the subsequent 'layers' trying to stack inside the original pallet.

That may be the cause of the bottom layer unstacking to the boxes and pallets too early...

As well, I did see changing the pallet's bounding box did help so that the pallets do not overlap, and stack properly.

Any help would be greatly appreciated.
I'm sure there's a much easier way that I am missing using queues, or other techniques.

combine-and-separate.fsm

FlexSim 20.0.0
stackingpalletization
simulationexample.jpg (468.9 KiB)
stacking-not-consistent.jpg (195.2 KiB)
combine-and-separate.fsm (48.0 KiB)
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1 Answer

Regan Blackett avatar image
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Regan Blackett answered Gregary G edited

You are correct, the issue is because you are packing the subsequent layers into the first layer, which means as far as that first pallet is concerned it has all those layers as part of its contents, which means the separator will unpack it all. Th easiest thing to do it is to just create an empty pallet on Combiner2 with an interarrival time of zero so it's always ready and then let Combiner2 collect the 5 layers into it. Then let that pallet go ot a sink after Separator2 is done with it.

See attached.

combining-containers.fsm


combining-containers.fsm (47.6 KiB)
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Gregary G avatar image Gregary G commented ·

Thank you very much Regan,

I'll probably just make the 'stack' base pallet very thin, and it won't affect anything.

Much appreciated!

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