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

Question

question

Matheus Rosa asked May 24 2016 at 8:55 PM Kavitha S commented Jan 18 2020 at 7:47 PM

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.

Software Version:

FlexSim 16.0.1

queue transporter flowitem forklift

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Answer 1 · 2016-05-24T21:31:25Z

Matthew Gillespie answered May 24 2016 at 9:31 PM Matthew Gillespie commented May 30 2016 at 10:40 PM

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 commented · May 25 2016 at 1:52 PM

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 ♦♦ Zixuan Xiong commented · May 25 2016 at 1:55 PM

What version are you using?

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Matthew Gillespie ♦♦ Zixuan Xiong commented · May 25 2016 at 2:07 PM

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

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multitransport-77.fsm (32.4 KiB)

Matheus Rosa commented · May 25 2016 at 4:44 PM

@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 ♦ Matheus Rosa commented · May 25 2016 at 5:04 PM

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 ♦♦ Matheus Rosa commented · May 25 2016 at 5:15 PM

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 commented · May 25 2016 at 5:24 PM

@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 ♦♦ Matheus Rosa commented · May 25 2016 at 7:53 PM

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 commented · May 30 2016 at 3:44 PM

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 ♦♦ Michael Machado commented · May 30 2016 at 10:40 PM

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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Answer 2 · 2016-05-24T21:56:21Z

Phil BoBo answered May 24 2016 at 9:56 PM Kavitha S commented Jan 18 2020 at 7:47 PM

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.

50-items-transporter.png (113.1 KiB)

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