Basic conveyor loading question

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Robert F2 asked Sep 20, '19 Joseph Gillespie answered Sep 20, '19

Basic conveyor loading question

frxfileserv1dncpersonal-foldersrobert-flatteryflex.fsm

In my model, I would like the operator to load the conveyor with four different parts in the same order each time. The simulation starts off well but after about 400 seconds, the sequence is off. How can I assure these four different parts enter the conveyor in the same order each time? Also, my queues 16-19 all have max content of 100 but they fill up far more than 100. Thanks for any help.

Software Version:

FlexSim 19.1.2

conveyor system

frxfileserv1dncpersonal-foldersrobert-flatteryflex.fsm (79.2 KiB)

Answer 1 · 2019-09-20T20:41:43Z

Joseph Gillespie answered Sep 20, '19

@Robert F2

One way that you can get the operator to unload the parts in the same order each time is to connect each of the queues to the same entry transfer point on the conveyor and then set the entry transfer point to pull the items in "Round Robin" order:

It looks like you were trying to do this before except from each queue. However, what that does is send the item from the queue to different ports in round robin order. You are sending the items to only one port from each queue.

As for your question about your queues overfilling, the problem is that the "max content" of queues is part of the 3D logic, and you were using Process Flow to create items in the queue. Process Flow logic and 3D logic don't often work well together, and in this case the Process Flow continues producing items despite the "max content" setting of the queues. I would recommend using sources to produce your flowitems or using Process Flow to restrict the number of items in each queue.

Here's an updated version of your model with fixes to both problems you mentioned: conveyorloadinganswer.fsm

capture.png (3.2 KiB)

capture2.png (37.7 KiB)

conveyorloadinganswer.fsm (77.3 KiB)

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