question

Vivek D2 avatar image
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Vivek D2 asked Vivek D2 commented

need to space out the items on merge conveyor

I am trying to build a continuous flow of items on a 3 in1 merge conveyor like one in the below youtube link.

https://www.youtube.com/watch?v=1L9E0iLT9iI&feature=youtu.be


As the items move on the merge conveyor, if the case feed rate is high Or there is a breakdown down the line - the cases need to space out on the merge conveyor so that they don't hit each other and the minimum distance rule is maintained as per the photoeye placed shown in the model.

decision point start stop_merge conveyor spacing.fsmDP_problem statement.jpg

In the WIP model i am able to space them out on breakdown but when it resumes at accumulation - the spacing rule fails.


I also tried sending message to previous DP when the case moves to the next DP but on receiving the message it doesn't triggers it to resume the item

FlexSim 20.1.3
flexsim 20.1.3decision pointspacing item using decision point
dp-problem-statement.jpg (198.4 KiB)
decision-point-start-stop-merge-conveyor-spacing.fsm (3.8 MiB)
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1 Answer

Jason Lightfoot avatar image
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Jason Lightfoot answered Vivek D2 commented

Looking at the video I think a better solution is to

  • put a Moving Space value on the merge legs
  • control the release onto the merge table
  • stop the merge table based on accumulation
  • start again based on depletion of the accumulation.

Model attached.decision-point-start-stop-merge-conveyor-spacing_jl.fsm


decision-point-start-stop-merge-conveyor-spacing-j.fsm (134.2 KiB)
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Jason Lightfoot avatar image Jason Lightfoot ♦♦ commented ·

@Vivek D2 Here's another version with additional spacing of 30mm between the packages when they stop on the merge legs.

decision-point-start-stop-merge-conveyor-spacing_jl2.fsm

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decision-point-start-stop-merge-conveyor-spacing-j.fsm (90.2 KiB)
Vivek D2 avatar image Vivek D2 commented ·

This is super helpful Jason ! Thanks a lot. exactly what I needed. You are a Genius man !

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