Dangerous Prototypes

General Category => Tools of the trade => Topic started by: ian on February 01, 2013, 06:36:20 am

Title: PE-986A/983A solder paste dispenser
Post by: ian on February 01, 2013, 06:36:20 am
Not 100% sure, but I think this is the one that listed at about $45:

http://www.ownta.com/jnd-983a-digital-a ... enser.html (http://www.ownta.com/jnd-983a-digital-automatic-glue-dispenser.html)

Quote
JND-983A Digital Automatic glue dispenser

Automatic Liquid Dispenser with time control. To push the liquid pneumatically, controlled by time, to be sure the same dispensing drops and dispensing cycle time,regulated the air pressure with suitable tip at your equipments of the different liquids as glues, solder pastes. Applied for 10 types of steel tips and 5 types of plastic tips for various customers’ needs…

JND-983A Digital Automatic glue dispenser Specifications:

    Power supply:  AC 220V+/-10%/50Hz / AC 110V+/-10%/60Hz
    Power consumption: <8W
    Function mode: Hand mode/Autoloading mode
    Air source: max.0.99MPa
    Min.dispensing quantity: 0.01ml
    Stress control range: 0.05MPa--0.99MPa
    Size: 235mmx225mmx63mm
    Time control range: 0.01S-1S;0.1-10S;0.2-20S;0.3-30S
    Weight: 2.2kg

Adapt to the following liquid: instant glue, red glue, anaerobic glue, black glue, silica glue, SMT red glue, yellow glue, silver glue, Si glue, epoxy resin, screws fixative, Lubricating Oil, and flux.

Not sure if it is that exact mark, but has the same adjustments and stuff.
Title: Re: Solder paste dispenser
Post by: ian on February 01, 2013, 10:18:52 am
Package is being delivered in an hour or two, but I missed the order deadline to get the Air Compressor today by 5 minutes :(
Title: Re: Solder paste dispenser
Post by: nickjohnson on February 01, 2013, 11:50:48 am
I thought that one looked very cool, but it's really expensive if you're not actually in Shenzhen. I don't suppose you've seen it any cheaper than ~$150 USD outside Shenzhen?
Title: Re: Solder paste dispenser
Post by: ian on February 01, 2013, 12:03:10 pm
Mine is actually Spersder PE-986A but seems exactly the same as all the 983s out there. There are jumper switches on the back, but the meaning is unclear as the manual is totally in Chinese.  Here is some info from an aliexpress comment:

Quote
The DIP switches have multiple functions. All DIPs down and becomes completely manual with box, pedal or barrel 'shot' switch controlling dispense time. All DIPs up and keeps repeating for set dispense time at set interval time. DIP 1 down and DIPs 2, 3 and 4 up then will keep timed dispensing at set intervals while 'shot' switch is pressed . Other DIP positions set shot number per press

@nick - never looked, but seeing now on aliexpress they are WAY too expensive. Pre-bargain price on this was $45 USD.
Title: Re: Solder paste dispenser
Post by: matseng on February 01, 2013, 12:12:53 pm
This site http://www.hi1718.com/news/price/10280.html (http://www.hi1718.com/news/price/10280.html)  lists some prices for last year.

Quote
Automatic high-precision digital to dispenser JND983A different quote in the following four areas in Shenzhen offer of 350-510 yuan, priced at 335-458 yuan in Dongguan, priced at 300-355 yuan in Guangzhou, Ningbo region offer of yuan 378-450.

(300 yuan = USD 48)
Title: Re: Solder paste dispenser
Post by: ian on February 01, 2013, 12:17:22 pm
Quote
F1: engage foot switch, spits out continuously. Release switch to stop.
F2: step on foot switch once, spits out according to the preset duration. step on foot switch again to stop.
F3: engage foot switch, spits out continuously according to the preset duration. step on foot switch again to stop.
F4: automatically spit out according to timer settings.
F5: step on foot switch once, spit out one time according to the preset time.
F6: step on foot switch once, spit out twice according to the preset time.
F7-F16: (same as F6, but 3 - 12 times)

From EEVblog forum:
http://www.eevblog.com/forum/chat/trans ... /#msg78447 (http://www.eevblog.com/forum/chat/translator-needed/msg78447/#msg78447)
Title: Re: PE-986A/983A solder paste dispenser
Post by: neslekkim on February 02, 2013, 08:57:06 am
the cheapest ones I have found is the 982, but doesnt have the display
http://www.ebay.com/itm/281035120564 (http://www.ebay.com/itm/281035120564)

But I guess its better to get an unit that others have already experience with, easier to get help/tips for usage. And pre-bargain price of $45 is very good!
I guess tips and so on is very cheap there also?
Title: Re: PE-986A/983A solder paste dispenser
Post by: ian on February 02, 2013, 10:40:18 am
They have cases and counters full of all imaginable syringes and tips and related paraphernalia. Most of it is pennies. I'll need to find out which type I like, then buy a bag of them. The selection is overwhelming.
Title: Re: PE-986A/983A solder paste dispenser
Post by: neslekkim on February 02, 2013, 11:47:41 am
yea, I bought some bags with tips from an dealer, but it's difficult to know which sizes you actually can use, so for me, who is not even Gauge compatible (I'm metric), I easily would sit with bags of useless tips;)
Title: Re: PE-986A/983A solder paste dispenser
Post by: ian on February 03, 2013, 08:20:36 am
Got the compressor. It's cute, but probably a 24L would have been better. It seems to need to (loudly!) add air after a dozen or so shots with the dispenser.

Have not got the dispenser working yet. Even at 100PSI nothing comes out. I can see the plunger move and the hardware works great, but I think there is too much paste in the syringe and it's like the Mr. Wizard experiment where a tissue over a paper towel tube filled with salt can withstand a broomstick blow...

Will try some more once the neighbors wake up :)
Title: Re: PE-986A/983A solder paste dispenser
Post by: Sjaak on February 03, 2013, 08:33:53 am
Im assuming you took it right out of the fridge? I think the solderpaste needs to be at room temp to be more fluid.
Title: Re: PE-986A/983A solder paste dispenser
Post by: nickjohnson on February 04, 2013, 11:30:02 am
I'm curious if you can estimate how much air is used for each dispensing - perhaps by checking the pressure gauge after a few shots? I really want to try one with bottled gas, but that only works if my estimates about how long a bottle will last are correct.
Title: Re: PE-986A/983A solder paste dispenser
Post by: ian on February 04, 2013, 12:01:03 pm
I did let the paste warm. Using less and bigger needle with high pressure seemed to help. Still working it out and will try a new solder paste now.

IT uses quite a bit of air. My 6L tank goes from 100psi to 50psi (if turned off) in only a few dozen shots.
Title: Re: PE-986A/983A solder paste dispenser
Post by: ian on February 04, 2013, 12:22:57 pm
The mechanic paste works _way_ better. I don't think the sparkle paste is formulated correctly for the dispenser.
Title: Re: PE-986A/983A solder paste dispenser
Post by: nickjohnson on February 04, 2013, 01:16:41 pm
[quote author="ian"]I did let the paste warm. Using less and bigger needle with high pressure seemed to help. Still working it out and will try a new solder paste now.

IT uses quite a bit of air. My 6L tank goes from 100psi to 50psi (if turned off) in only a few dozen shots.[/quote]

Wow, that's way more than I expected. Does it sound like it's leaking anywhere when you're not using it?

50 PSI is 3.4 atmospheres, which means you went through about 20.4 litres of air in 'a few dozen' shots, which I'm going to randomly guess at 36, which means about half a litre of compressed air per shot.

A disposable welding gas cylinder contains 390 grams of CO2, which is about 197 litres of air at STP - working out to only about 400 shots per cylinder(!), or 3.5p each!

A small beer gas cylinder contains 3.15KG of CO2, which is 1590 litres, so you'd get about 3000 shots per cylinder, or about 0.5p each. At that rate it'd take about 12,000 shots to pay for a compressor.
Title: Re: PE-986A/983A solder paste dispenser
Post by: neslekkim on February 04, 2013, 01:51:22 pm
Oh, is it possible to use CO2 for these dispenser?, i have lot of co2 due to my interrest in homebrewed beer, would be cool if one doesnt need the compressor due to the noise.
Title: Re: PE-986A/983A solder paste dispenser
Post by: ian on February 04, 2013, 01:58:48 pm
No idea on the C02. If it is dry and oil free I guess it would be ok.

There is no direct leakage as the compressor never comes on if I just leave it. One exception is the vacuum setting to help suck excess paste back up - it constantly leaks air, I assume in some sort of venturi tube arrangement? But turned off it does not leak.
Title: Re: PE-986A/983A solder paste dispenser
Post by: neslekkim on February 04, 2013, 02:03:43 pm
Co2 is very much dry and oilfree, i use it today to push beer from keg  ;)
Title: Re: PE-986A/983A solder paste dispenser
Post by: nickjohnson on February 04, 2013, 03:37:51 pm
[quote author="neslekkim"]Oh, is it possible to use CO2 for these dispenser?, i have lot of co2 due to my interrest in homebrewed beer, would be cool if one doesnt need the compressor due to the noise.[/quote]

That's exactly what I'm planning. See my previous post for estimates of the amount of gas it would use based on Ian's estimates.
Title: Re: PE-986A/983A solder paste dispenser
Post by: nickjohnson on May 20, 2013, 12:55:56 pm
Is anyone (Ian?) able to tell me what the outside diameter of the air tube that feeds the dispenser is?
Title: Re: PE-986A/983A solder paste dispenser
Post by: neslekkim on May 20, 2013, 01:15:25 pm
And did anyone find out how and where we can get this dispenser? (need this and the reflow oven soon)
Title: Re: PE-986A/983A solder paste dispenser
Post by: nickjohnson on May 27, 2013, 02:24:09 pm
I successfully hooked up my solder paste dispenser to a CO2 tank! Details here (http://http://www.arachnidlabs.com/blog/2013/05/27/using-a-solder-paste-dispenser-with-compressed-air-tanks/)
Title: Re: PE-986A/983A solder paste dispenser
Post by: neslekkim on May 27, 2013, 03:14:27 pm
So your conclusion is not to use co2?
I was planning to use Sodastream gas, since I have some of those bottles, and those are refillable, so the gas is not too expensive, and I have an refillable 2kg bottle that could be used also, if co2 at all was usable of course.
And an regulator like this to dispense the gas: http://www.kegkits.com/Merchant2/mercha ... Code=HPREG (http://www.kegkits.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=HPREG)  (It's 0-300 PSI, normal ones I have for beer tapping, is 0-60PSI, which seemed to little according to your post?)
Title: Re: PE-986A/983A solder paste dispenser
Post by: nickjohnson on May 28, 2013, 09:14:23 pm
[quote author="neslekkim"]So your conclusion is not to use co2?
I was planning to use Sodastream gas, since I have some of those bottles, and those are refillable, so the gas is not too expensive, and I have an refillable 2kg bottle that could be used also, if co2 at all was usable of course.
And an regulator like this to dispense the gas: http://www.kegkits.com/Merchant2/mercha ... Code=HPREG (http://www.kegkits.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=HPREG)  (It's 0-300 PSI, normal ones I have for beer tapping, is 0-60PSI, which seemed to little according to your post?)[/quote]

CO2 is perfectly satisfactory, as well as being dead silent. The only reason I'm not likely to stick with it is because airbrush compressors are pretty cheap, and I now know they'll have sufficient pressure for solder paste dispensing. A 60PSI regulator would also be perfectly satisfactory.
Title: Re: PE-986A/983A solder paste dispenser
Post by: neslekkim on May 28, 2013, 11:32:21 pm
How is the noiselevel on those?, the tanks are quite small, if any, but maybe they are not so noisy?

Btw, which dispenser did you get?
Title: Re: PE-986A/983A solder paste dispenser
Post by: nickjohnson on May 28, 2013, 11:40:41 pm
The tanks are silent, naturally. I don't own an airbrush compressor, but they tend to claim noise around 65dB, which is very quiet.

I got the same dispenser as Ian.
Title: Re: PE-986A/983A solder paste dispenser
Post by: neslekkim on May 28, 2013, 11:46:02 pm
ah, ok, the ones that aren't to be found on ebay.
Title: Re: PE-986A/983A solder paste dispenser
Post by: nickjohnson on May 28, 2013, 11:52:31 pm
[quote author="neslekkim"]ah, ok, the ones that aren't to be found on ebay.[/quote]

Indeed. The Aliexpress seller I bought from is linked in my post.
Title: Re: PE-986A/983A solder paste dispenser
Post by: neslekkim on May 28, 2013, 11:59:44 pm
ah, gone now, but I found from another one:
http://www.aliexpress.com/item/Freeship ... 44345.html (http://www.aliexpress.com/item/Freeshipping-Auto-Glue-Dispenser-Solder-Paste-Liquid-Controller-Dropper-YDL-983A/571944345.html)
I guess I need to take the plunge on aliexpress soon..