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screen printing => General Screen Printing => Topic started by: ffokazak on February 25, 2016, 12:56:51 PM

Title: Indexing so fast that the sleeves brush open areas on screens....
Post by: ffokazak on February 25, 2016, 12:56:51 PM
Hey guys, just wondering if anyone has come across this.

We run a CHIIID on regular sized pallets. The machine indexes so fast that the sleeve are getting "Flung" up and touching open areas on the bottoms of the screens. Obviously worse on larger sizes. Its not a thick player of ink to clean off of the sleeves, but another step that my guys have to do nonetheless.

Aside from slowing down the index {Which is not an ideal solution in my opinion) I am at a loss.

Anyone else experience this on their presses?

Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: 244 on February 25, 2016, 01:29:49 PM
you can do two things. Use a larger pallet (18" instead of 16") so you have less free shirt or dial down the speed on the size of pallet you are using. Feel free to contact me for how to adjust properly.
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: Colin on February 25, 2016, 01:31:28 PM
We experience this with our Sportsman EXG.

Standard index speeds.  It will get worse the faster the machine indexes.....

Worse again with lightweight fabrics that flip easier.

We have to slow down the index speed to one pallet size larger.  No way around it....
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: Printficient on February 25, 2016, 01:45:24 PM
How fast do you need to go.  We work on a 600 per hour speed when in production.  The MHM will go faster as will your CHIIID. Really not fair to expect someone to load at 1000 plus per hour all day.
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: Sbrem on February 25, 2016, 02:11:08 PM
hang weights on the sleeves... or slow it down a little...

Steve
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: mk162 on February 25, 2016, 02:29:58 PM
I thought about hanging weights, but if you think about motion it's just giving more of a back swing to launch the sleeves on top of the platens.  I would personally pin the sleeves to each other under the platen. 
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: dirkdiggler on February 25, 2016, 02:59:16 PM
same press, same problem.  change pallet size in servo options.  problem solved.
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: 244 on February 25, 2016, 03:48:32 PM
you can do two things. Use a larger pallet (18" instead of 16") so you have less free shirt or dial down the speed on the size of pallet you are using. Feel free to contact me for how to adjust properly.
Contact me directly and I will send you a video of over 1000 shirts per hour being run easily on a Challenger III with the 18" pallets. no problem with sleeves!! File too big for here.
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: LuckyFlyinROUSH on February 25, 2016, 04:06:30 PM
We had sleeves and hoodie strings flinging up into the ink. Just slow the indexer down one pallet size and it seems to stop all issues.
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: Colin on February 25, 2016, 04:11:20 PM
Rich:

Is the video on your Youtube channel?
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: ffokazak on February 25, 2016, 04:11:42 PM
Hmm lots of good points.

I like to have the most time possible for positioning, removing lint/rogue strings etc.  If your press cycles every 6 seconds, but 3 of those are spent lowering, and indexing that only leaves 3 seconds with the board in front of the operator. If it indexes in .75 seconds, you have that much more time.

Yesterday I showed the guys who's boss in the back by printing 200 Black "Staff" prints (So a few inches of stroke distance) at 2 second index on the press. I think we were at 92 dozen per hour.  Yes the likelihood that we print at that pace every day is slim to none. But it is fun to open the press up once in a while :)



Rich, is there a way to adjust the index slightly? So not a whole pallet size? The Large pallet is quite slow... 



Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: ABuffington on February 25, 2016, 04:12:25 PM
Sell tank tops
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: ffokazak on February 25, 2016, 04:32:13 PM
Hahah yeah! Tank season is coming up for sure!

Theres never an issue on Small tees, Only for the big boys!

Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: dirkdiggler on February 25, 2016, 04:34:36 PM
hoodie strings are always my problem.
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: bimmridder on February 25, 2016, 04:35:45 PM
We also have had that happen with strings on sweatshirts. We just draw the string tight and slip in in the hood. Pull the hood back to shape as you unload.

I'm all for tank top weather, too
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: 244 on February 25, 2016, 06:10:56 PM
Rich:

Is the video on your Youtube channel?
No its not. Its one my salesman took at a customer. Send me an e-mail and I will send to you. rich.hoffman@mrprint.com
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: 244 on February 25, 2016, 06:12:38 PM
Hmm lots of good points.

I like to have the most time possible for positioning, removing lint/rogue strings etc.  If your press cycles every 6 seconds, but 3 of those are spent lowering, and indexing that only leaves 3 seconds with the board in front of the operator. If it indexes in .75 seconds, you have that much more time.

Yesterday I showed the guys who's boss in the back by printing 200 Black "Staff" prints (So a few inches of stroke distance) at 2 second index on the press. I think we were at 92 dozen per hour.  Yes the likelihood that we print at that pace every day is slim to none. But it is fun to open the press up once in a while :)



Rich, is there a way to adjust the index slightly? So not a whole pallet size? The Large pallet is quite slow...
If this is a CHIII yes there is.
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: 244 on February 25, 2016, 06:15:30 PM
Hahah yeah! Tank season is coming up for sure!

Theres never an issue on Small tees, Only for the big boys!
I will send you what it looks like at 1,100+ per hr and they do it all day. 18" pallets makes for an easier alignment as well as controls flying sleeves. Send me an e-mail and I will send it.
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: 3Deep on February 25, 2016, 07:37:27 PM
If this is long sleeves your talking about, simple just stuff the sleeves in the neck of the shirt as you load, that's what we do at our shop and never miss a beat.

darryl
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: Wildcard on February 25, 2016, 10:59:10 PM
Well I must say that when your production bottle neck is that the shirts are trying to fly off press at chosen speed then you've got a pretty good set up! :)
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: Screen Dan on February 26, 2016, 10:26:06 AM
I'm assuming that the sleeve being flung up is the one not being printed...because if it is the sleeve being printed I have no idea how that works.  Our CH3 is always set to max index speed and we've never encountered that problem.

Now, I have encountered that problem years ago on our G2s when printing sleeves on a very sheer fabric garment.  So I got into the habit of after loading the sleeve I would flip the other sleeve over the arm, right in back of the sleeve pallet.   It also prevents the sleeves from dragging on the ground.

Of course, if your press has ink there it's going to be a bad time...but it's far easier to deal with that than a spot gun on hundreds of sleeves. 

Been doing it so long that I honestly had to scratch my head and say to myself "why don't we have that problem?" ...took a minute to remember that we did.
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: Colin on February 26, 2016, 11:35:22 AM
This is in regards to front or back printing of long sleeve garments, not the sleeve itself :)
Title: Re: Indexing so fast that the sleeves brush open areas on screens....
Post by: ffokazak on February 26, 2016, 11:40:03 AM
Correct I was referring to printing fronts, and having the sleeves rub up on the open areas of the screens.

Not even long sleeves, but regular short sleeves.

We just did an 11 colour print, and it was more apparent as there were that many more screens for the sleeve to hit.