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Matheus Rosa avatar image
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Matheus Rosa asked Kavitha S commented

How to make the forklift transport more than one item per time

I have a queue that will stack 50 objects. I would like to make my forklift wait until this amount is achieved to make the transportation between the queue and the sink.

Thanks.

FlexSim 16.0.1
queuetransporterflowitemforklift
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Matthew Gillespie avatar image
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Matthew Gillespie answered Matthew Gillespie commented

Attached is a model where I used Process Flow to control the Transporter.

The queue pushes to an Item List and the token in the Process Flow tries to pull off a specified number (you can set it in the Number Required activity). Once there's that many items in the queue the Transporter is acquired and used to travel to the queue, load all the items, travel to the conveyor, and unload all the items.


multitransport.png (143.2 KiB)
multitransport.fsm (31.0 KiB)
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Zixuan Xiong avatar image Zixuan Xiong commented ·

That's smart! Can you paste your referencing to the conveyor here? I'm in a older version and it's showing blank.

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Matthew Gillespie avatar image Matthew Gillespie ♦♦ Zixuan Xiong commented ·

What version are you using?

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Matthew Gillespie avatar image Matthew Gillespie ♦♦ Zixuan Xiong commented ·

Here is a slightly modified version of that same model for version 7.7

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Matheus Rosa avatar image Matheus Rosa commented ·

@Matthew Gillespie

I don't know why my task is not working. My forklift is following a path (with nodes) to deliver the products to 3 racks. However to figure out the Process Flow control I deleted 2 of my racks so it would look like yours. I tried to use your coding making the input/output changes but it returns me the error on the photo when the transporter is almost arriving at the rack.

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error.png (98.2 KiB)
Regan Blackett avatar image Regan Blackett ♦ Matheus Rosa commented ·

It looks like you are missing a reference to the thing you want to unload in your Unload task. Maybe a label value for that activity wasn't set correctly?

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Matthew Gillespie avatar image Matthew Gillespie ♦♦ Matheus Rosa commented ·

If Regan's suggestion doesn't fix it you can attach your model here and we'll take a look at it.

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Matheus Rosa avatar image Matheus Rosa commented ·

@Matthew Gillespie I figured out the problem. Just one thing, when the transporter goes to the rack I feel like he puts one object per time, what can I do to make him put the 50 objects with 1 move. And also how can I add my 3 racks to the unload code?

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Matthew Gillespie avatar image Matthew Gillespie ♦♦ Matheus Rosa commented ·

I converted your comment about adding 3 racks to this model into a new question. I would have converted the other part of this comment into a new question as well, but I'm not sure what you want exactly. Do you want all the items to be put in the same bay? If you ask this as a new question and outline what behavior you'd like to see we'll get an answer for you.

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Michael Machado avatar image Michael Machado commented ·

How did you make the entry transfer appear in the conveyor object without doing any connection from Queue to the straight conveyor?

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Matthew Gillespie avatar image Matthew Gillespie ♦♦ Michael Machado commented ·

I created the entry transfer by connecting a fixed resource to the conveyor. Then I right clicked on the entry transfer and selected the Remove Connections option.

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Phil BoBo avatar image
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Phil BoBo answered Kavitha S commented

You could just check the Perform Batching box on the Queue's Properties and set its Target Batch Size to 50.

Then set the Capacity of the Transporter to 50.


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Arun Kr avatar image Arun Kr commented ·

Hi Phil,

I just tried to use the same concept while loading items on an AGV using AGV network. But the AGV is not picking the items as you mentioned. Please see the attached model and can you explain the reason?

Regards,

Arun KR

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agv.fsm (20.5 KiB)
Kavitha S avatar image Kavitha S Arun Kr commented ·

I'm struggling with the same issue. @Arun KR @phil.bobo @Matthew Gillespie @Matheus Rosa

(the same concept while loading items on an AGV using AGV network.- need the AGV to transport 4 items at the same time)

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