Trouble with placing boxes on the Conveyor and moving to the Sink

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Hoang Nk asked Jan 11, '23 Andrew O commented Jan 16, '23

Trouble with placing boxes on the Conveyor and moving to the Sink

Hello folks,

I'm running into a problem at the moment with the Conveyor. As can be seen from the below figure, I would like the car to travel to the upper conveyor and pick 1 box. Then it will travel to the lower conveyor and drop the box there. The box is then supposed to exit to Sink1.

My problem is at the lower conveyor where the box doesn't move and just stays there. I tried connecting Queue1 to the conveyor and dropped the box at Queue1, then the box was transferred right away to Sink1. However, in my model, I would not want to put a Queue in front of a conveyor to drop the box.

conveyor_test.fsm

Is there any way that could help me tackle this problem? I also tried using the Conveyor.sendItem() but it didn't do any good.

Regards,

Hoang

Software Version:

FlexSim 22.2.1

conveyor

1673403342544.png (72.0 KiB)

conveyor-test.fsm (45.1 KiB)

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Joerg Vogel commented · Jan 11, 2023 at 07:17 AM

There seems to be a item flow connection missing from upper to lower conveyor. If you have build a flow connection you can place a decision point on first conveyor to send specific items to a then automatically created exit transfer. In this transfer you set an option to use a transport. But this description is part of manual sections about conveyor flow. Please read and adjust your model. If you have still specific problems about exit transfers then you are always welcome to ask questions

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Andrew O commented · Jan 16, 2023 at 05:34 PM

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Answer 1 · 2023-01-11T10:40:50Z

Joerg Vogel answered Jan 11, '23 Joerg Vogel edited Jan 11, '23

I don't understand, which item exactly do you want to extract from conveyor StraightConveyor1.

Object obj = conv.itemData[1].object;

itemData datatype is not an array. It expects a reference to an item. This is a treenode and not a number.

Your Process Flow creates tasksequences, which uses data at the moment that are present in your model. BUT those values might be not available anymore, when your created tasksequence gets into execution.

And currently there is not a mechanism present to insert a conveyor item just by code. You need always a sending 3d Object and an EntryTransfer at a conveyor. Internally the conveyor module resolves incoming items in an Entry Transfer to find a gap on conveyor for transport.

Assuming you want to transport only some items, I have repaired your model.

conveyor_exit_by_transport_randomly.fsm

conveyor-exit-by-transport-randomly.fsm (45.6 KiB)

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Answer 2 · 2023-01-11T07:27:17Z

Felix Möhlmann answered Jan 11, '23

You need to unload the item into an Entry Transfer for it to properly register as being on the conveyor.

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