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MR asked Jeanette F commented

Conveyor two way

I'm building a model with several two way conveyors and turn tables. There is no problem if there is only one way. But if I want to let conveyor be two way, the flow item stops before the turn table.I'm wondering if the exit transfer and entry transfer at the same side will cause the conveyor work unsuccessfully(The end of the forward conveyor and the head of the reverse conveyor). I have used the method below to try to solve this problem:

1.Using zone in process flow that the official website gave, the link is below:

https://www.simweb.com.tw/contents/zh-tw/p127584_1020.html

And the fsm is below. The process I want is:

The forward: Source1 to C01_Out & C02_Out(through elevator) to Rack_In to Rack.

The reverse: Source2 to Rack to Rack_Out to C01_In & C02_Out37.

Version is 20.0.7.

空中輸送+提升基+立庫進+立庫出但是不會動.fsm

FlexSim 20.0.10
conveyor
空中輸送提升基立庫進立庫出但是不會動.fsm (71.9 KiB)
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Jeanette F avatar image Jeanette F ♦♦ commented ·

Can you reupload your model? Also your link goes to a blank page.

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Jason Lightfoot avatar image Jason Lightfoot ♦ Jeanette F ♦♦ commented ·

This is the model.

ConveyorTwoWay.fsm

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conveyortwoway.fsm (71.9 KiB)

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Jeanette F avatar image
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Jeanette F answered Jeanette F commented


Hello @Ingrid Hung,

I decided that the only conveyors that needed to be two way are the two conveyors that connect to the queues by the elevator. I adjusted the direction of the other conveyors so that it worked for the flow of items. I eliminated all of the decision points. There is only one decision point that stops items coming from the rack. The queues that release items to the rack are set to not release the items. The process flow uses event triggers to recognize when an item arrives at the decision point or in one of the queues. From there is evaluates what zone or conveyor that item will travel down. Once that zone is acquired it will set the conveyor speed and the item will start traveling.

1646063214038.png


Please review the model and look through each activity in the process flow to learn how it was configured to accomplish this.

conveyortwoway_JF.fsm


1646063214038.png (60.9 KiB)
conveyortwoway-jf.fsm (86.3 KiB)
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MR avatar image MR commented ·
Sorry for the late reply. Thanks for you giving the suggestion. It is really helpful. And I try it by myself successfully. Also I want to ask is it necessary to use zoom if I want to do the two way conveyors?
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Jeanette F avatar image Jeanette F ♦♦ MR commented ·
Hello @Ingrid Hung,

There may be other ways of accomplishing this, however this is what I decided to go with. The decision points you were trying earlier were a problem because while one box would be traveling down a conveyor another box could arrive to travel up the conveyor and therefore trap the original box.

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