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Hoang Nk avatar image
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Hoang Nk asked Andrew O commented

Changing direction of item in Gravity Flow Rack

Hello all,

I have been facing this problem when using the Storage Rack. 1675266185551.png

In the above figure, I have a storage rack in the middle and 2 stacker cranes on the sides. The workflow is mainly that Crane1 picks some boxes from its side and then places them onto the Rack, the boxes will flow to the other side and will be picked up by Crane2. I am using the GravityFlowRack at the moment to make the boxes flow automatically to the other side.

However, I'm facing a challenge now as there are some channels in the Rack that will be used to return the pallets from Crane2's side to Crane1's side. So, the question is: How can I make a storage rack in which objects can move in both directions?

Many thanks in advance :)

FlexSim 22.1.2
gravity flowrackmoving objects
1675266185551.png (193.2 KiB)
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Andrew O avatar image Andrew O commented ·

Hi @Hoang Nk, was Jason Lightfoot's answer helpful? If so, please click the "Accept" button at the bottom of their answer. Or if you still have questions, add a comment and we'll continue the conversation.

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Jason Lightfoot avatar image
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Jason Lightfoot answered Jason Lightfoot edited

You could block out the slots in two racks so that none are overlapping and have one rotated through 180 degrees - as long as no single slot can change inclination and move items both ways this would work.

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Hoang Nk avatar image Hoang Nk commented ·
I'm sorry I don't quite get the idea. Do you mean that I could use 2 separate Racks and place them next to each other?
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Jeanette F avatar image Jeanette F ♦♦ Hoang Nk commented ·
I believe Jason is suggesting using two racks that are in the same location but one is rotated 180. You can view it as the two racks allow their slots to overlap and therefore be the same location. You block the slot on the rack that it is flowing the wrong direction and leave the slot open in the other rack.
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Hoang Nk avatar image Hoang Nk Jeanette F ♦♦ commented ·
So the only solution is to use 2 separate storage racks and there would not be any way to have a bi-directional Rack? Because in my work, it would be not convenient to control using 2 Racks
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