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Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


feeder pitch

griinder

#32624

feeder pitch | 13 February, 2005

Has anyone ever ran into a 20mm pitch on a 24mm tape and reel. Our software doesnt have a setting for 20mm. we found a way around it, but i was curious as to how common this pitch is, and if other software or feeders have a 20mm setting.

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#32626

feeder pitch | 13 February, 2005

#32641

feeder pitch | 14 February, 2005

EIA-481 standard allows the maximum pitch on tape to be 4mm less than the tape width (12mm width and larger). So it is within the standard allowances. As for how common 20mm pitch on 24mm tape is I can not say. I am surprised a 24mm tape feeder can not accomadate this pitch. There will always be anomalies though, I have seen many times 12mm pitch pockets on 12mm tape.

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zg

#32642

feeder pitch | 14 February, 2005

What about your pick & place brand?

regards

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RDR

#32643

feeder pitch | 14 February, 2005

We use Samsung and our 24mm feeders have 8,12,16,and 20mm pitch settings. I have found 20mm pitch quite common. My favorite is yhe 12 on 12 our feeders don't support that, we have to put them up on 16mm feeders our cycle them 3 times on a 4mm pitch setting.

russ

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griinder

#32644

feeder pitch | 14 February, 2005

WE ARE USING MIRAE MX240. ON THIS MACHINE, THE FEEDER ADVANCE AND THE FEEDER PITCH IS CONTROLLED BY THE MACHINE/SOFTWARE AS OPPOSED TO THE FEEDER ITSELF. OUR SELECTIONS FOR 24MM FDDERS ARE 4,8,12, 16, AND 24MM.I WAS WONDERING IF THE 20MM PITCH WAS UNCOMMON, OR IF ITS A MINOR BUG IN OUR SOFTWARE. IT SEEMS TO ME THAT THE LATTER HOLDS TRUE. WE GOT AROUND THE PROBLEM BY SELECTING 4MM PITCH WITH 5 CYCLES.

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Rob

#32646

feeder pitch | 15 February, 2005

Yes we have come across 24x20, & we have a couple of feeders set up for it, & no it's not that common a part but you can't be the only Mirae user who has ever tried. What do Mirae have to say?

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bobpan

#32650

feeder pitch | 15 February, 2005

The mirae machine does have the setting for 20mm pitch....it can be set on the machine software but i dont believe its on the offline software..

thanks

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#32655

feeder pitch | 15 February, 2005

Any tape--any pitch. On our C5 platform every part number (in your database) has a package type assigned to it. The package type contains the information about the pitch and component orientation. When you load the feeder you scan the part number--thats it. The pitch is automatically set.

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Rob

#32656

feeder pitch | 15 February, 2005

Greg, if there were awards given out for persistance, you'd be right up there!

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#32658

feeder pitch | 15 February, 2005

Rob, I did nothing more than answer the question. I didn't even mention the name Contact Systems ;)

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Rob

#32659

feeder pitch | 15 February, 2005

Of course Greg, silly me, you could have been referring that other C5, the infamously crap Sinclair C5 electric car from the 80's!

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RDR

#32666

feeder pitch | 15 February, 2005

Tell me more about the C5! I thought we were talking used Vettes here

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