Mike's Forums

Versatronics RV series Pick & Place machines => RV Hardware => Topic started by: wel on October 08, 2010, 11:43:04 AM

Title: Vacuum Pump
Post by: wel on October 08, 2010, 11:43:04 AM
Does anyone have the specification & manufacturer of the vacuum pump used on RV1 and RV4 machines?

Thanks in advance
Title: Re: Vacuum Pump
Post by: Mike on October 08, 2010, 03:21:20 PM
Can't help directly but these people make some small pumps that may be worth a look :
http://www.knf.co.uk/index.php?id=2&L=5
Title: Re: Vacuum Pump
Post by: Teuneman on October 12, 2010, 09:58:17 AM
Markings on my spare:

Buhler Motor GmbH 050/07 30131 12VDC 4400U 1/min

Thomas (a Gardner Denver Product) Memmingen
G12/045          50200
S/N:               0749006235
Title: Re: Vacuum Pump
Post by: Mike on October 12, 2010, 05:06:32 PM
Model G12/045 part no 50200 is listed in this catalogue :
http://www.gd-thomas.com/WorkArea/linkit.aspx?LinkIdentifier=id&ItemID=9738
Page 22

Title: Re: Vacuum Pump
Post by: Mike on February 11, 2011, 12:43:30 PM
This may be worth a look - haven't checked dimensions but readily available and cheap
http://www.sparkfun.com/products/10398
Title: Re: Vacuum Pump
Post by: Gopher on April 09, 2011, 06:04:56 PM
shiny shiny
Title: Re: Vacuum Pump
Post by: davidc on April 10, 2011, 10:54:28 PM
thats the wrong one.. ;)
Title: Re: Vacuum Pump
Post by: Gopher on April 11, 2011, 09:55:36 AM
LOL, you trying to scare me there? It's looking pretty sweet in the machine right now.
Title: Re: Vacuum Pump
Post by: davidc on April 12, 2011, 10:08:58 PM
no honestly after about 3 hours running it goes…whiirrrrrrrrrrrrrrrrrr then burns out…. what muppet told u that would work!!  ;) ;)
Title: Re: Vacuum Pump
Post by: Gopher on April 12, 2011, 11:44:30 PM
It came to me in a vision with a thousand singing angels dancing upon an My100Lx so figured they must know what they were on about.
Title: Re: Vacuum Pump
Post by: basemetal on April 13, 2011, 09:27:32 AM
Gopher,

The attached pictures are of a replacement pump purchased from davidc recently. Certainly looks a lot like yours - although i cant see all of the part numbers on yours.
(http://C:\Users\Paul\Desktop\RV4s\DSCN2900.jpg)
(http://C:\Users\Paul\Desktop\RV4s\DSCN2901.jpg)
Title: Re: Vacuum Pump
Post by: Gopher on April 13, 2011, 11:47:18 AM
Lol yes same one, We went direct, they did try a sneaky price hike from the initial quote but such tricks only work in larger companies where the left doesn't know what the right is doing. It even came in 2+ a bit weeks not the 6-8 they said it would.
Title: Re: Vacuum Pump
Post by: trev on February 17, 2019, 01:59:45 PM
Hi, bringing up an old thread. My pump went on my machine. Luckily I have a spare but want to get another in in case that one goes.

Strange thing is when I put it on my workbench power supply at 12V, the vacuum works perfectly. I now wonder if maybe the power supply in the machine is a little low. I notice that the pump changes pitch when the Z axis moves so the voltage must be dropping as well. Maybe I need to invest in a 12V switched mode power supply for it instead.

Just to be safe I would like to get a pump in so that I do have one spare. i found the link to the original manufacturer part.

https://www.gd-thomas.com/en/g-12-045-12.html

I am in the UK, was hoping there might be a local distributor?

Also wondering if people had found any better/cheaper/stronger pumps?

Thanks

Trev
Title: Re: Vacuum Pump
Post by: alanambrose on May 03, 2019, 01:02:43 PM
Hi trev,

I'm wondering what you did as I have a concern re components swiveling on the nozzle. Did you get a new pump or some upgraded power?

Ta, Alan
Title: Re: Vacuum Pump
Post by: spiyda on May 03, 2019, 10:11:16 PM
-150 mbar continuous is not much of a vacuum.

the vacuum pump on my vac former pulls -950 all day (leaks excepted)

There are plenty of cheap pumps on eBay with specs ranging up to -750mbar

I'd spend the £8 or so and see if a cheap one will work.
Title: Re: Vacuum Pump
Post by: trev on May 07, 2019, 04:08:21 AM
I had a spare original pump so did not need to find a new one or try a China copy. I would probably go down the Ebay route and test a few cheap ones out.

Is the part rotation happening after its picked it up or during transport of the part? Modern cell phones have fantastic slow motion capture on them which could help to see exactly what is happening at pick up.

Trev
Title: Re: Vacuum Pump
Post by: SteveW on May 07, 2019, 10:51:42 AM
Just checking that the nozzle's not partly blocked, and that you're dwelling for long enough at pickup time (and not picking from too high).
All of those can cause swivelling. Also, merged moves if the part hits part of the feeder on the way up...
Title: Re: Vacuum Pump
Post by: alanambrose on May 09, 2019, 10:16:42 AM
>>> Is the part rotation happening after its picked it up or during transport of the part?
>>> Just checking that the nozzle's not partly blocked, and that you're dwelling for long enough at pickup time (and not picking from too high).

All good points, and the answer is: I'm not sure. I've tried the phone slowmo before but not had much success, will try again.

Alan
Title: Re: Vacuum Pump
Post by: spiyda on May 09, 2019, 08:11:10 PM
Looking at it from a different perspective,

the vacuum is too high to reasonably check with a water gauge,
but you could check the output pressure with a simple tyre pressure gauge

0.15 bar should register on most,

just need to make an adapter for the pump outlet to the gauge, maybe an old tyre valve and a bit of tube ?