Vacuum pump or something similar

Hi to all !

Am looking for some product that i can use for 24/7 work.
The setup is quite simple because i need to use it for one pick and replace solution but i need some continuous power of let's say 300W.

The idea is to control this unit with some air electromagnetic valve.
Basically, pump should work all the time and with the help of valve
i would "cut" air flow for max 2 seconds.

So:

  • activate valve--> pick up some object - 2 seconds
  • close valve --> 1.5 seconds
  • activate valve --> pick up some object - 2 seconds
  • close valve --> 1.5 seconds
    etc.

For test purposes am using 12V volvo air pump but it's just too weak to pick some object.
OK. maybe one additional problem is suction cup because the object has no flat surface....

A.

Without a flat surface you will indeed have difficulty. Soft silicone cups of many sizes are used in
commercial pick&place machines, SM components always have a flat top, or a removable caddy for
this purpose that is detached after the PCB is reflowed.

These are the sorts of cup: https://buildyourcnc.com/Item/redfrog-v1-vacuum-nozzle-pneumatic-hydraulic

arnix:
For test purposes am using 12V Volvo air pump but it's just too weak to pick some object.

Perhaps they figure that chronically slow and hesitant drivers won't need more suction than that! :astonished:

I don't even know what the air pump is for in that car!

Am making one silicone based cup ( 5 cm radius ) and i will test it today.

But am still worried about power of the pump. The pump that i use wont work at 12/2A power supply
so i connect it to PC PSU ( 12V / 10 A ) and its working fine.

I didnt test power consumption but i think it's around 100W.

Btw. this is what am talking about ( the same stuff like volvo ):

A.

Interesting project.

Do you have a way to release the vacuum holding the piece after you have it in position? Just using a solenoid to control the vacuum from the pump doesn't do anything with the vacuum already there. You need something additional.

Paul

You need something additional.
*** I was thinking about that too, but till now i didnt find any solution.
I will try suction cup first then i we will see.

Hmm, what do you think, how is this done on some industrial grade machine ?

A.

arnix:
You need something additional.
*** I was thinking about that too, but till now i didnt find any solution.
I will try suction cup first then i we will see.

Hmm, what do you think, how is this done on some industrial grade machine ?

A.

The valve is like a SPDT switch. Active it connects to the vacuum line. Inactive it connects to atmosphere pressure.

For the fully automated machines, the inactive port supplies a tiny pressure to break the seal between the vacuum cup and the object.

Paul

Do you have a link for such product ?

I guess the proper term is: three way solenoid valve. I found lots of industrial types, but this my be more reasonable.

Paul

Thank you for explanation and link. It looks like good product.
I will definitely buy it.

Tell me, do you know what should i use for vacuum pump ?

I made some tests with 1,8kw vacuum cleaner :slight_smile: and silicon cup and i must say
that anything under 500W will not work as it should.

It would work if the speed of pick up is lower but with speed that i need
anything under 500W is lost case scenario...

Btw. i increased the power to cca 800W and it's working flawless...

A.

arnix:
Thank you for explanation and link. It looks like good product.
I will definitely buy it.

Tell me, do you know what should i use for vacuum pump ?

I made some tests with 1,8kw vacuum cleaner :slight_smile: and silicon cup and i must say
that anything under 500W will not work as it should.

It would work if the speed of pick up is lower but with speed that i need
anything under 500W is lost case scenario...

Btw. i increased the power to cca 800W and it's working flawless...

A.

Are we going to get paid for consulting work done on your project?

Paul

arnix:
I made some tests with 1,8kw vacuum cleaner :slight_smile: and silicon cup and I must say
that anything under 500W will not work as it should.

Definitely overkill!

You are using a high-volume, moderate-pressure pump, and with its outlet mostly blocked off, it will likely overheat as it is cooled by the airflow.

Similar problems have been encountered by these adventurers.

Vacuum climbing machine :slight_smile: :slight_smile:
-- well at least, you have to have full trust in this gear :slight_smile:
-- i was watching somewhere that scientists have discovered some material
that has ability to "glue" itself to any surface. So they made something like
caterpillar and they hook cca 2KG to this 5cm caterpillar.Because of this
super glue capability, catepillar was pulling this 2kg weigth without problem.
True, it was cca 1 mm per second,but it worked.

Anyway :slight_smile:
I agree that 500W is overkill but the problem is that it looks it has not enough
suction power to lift some object when i run it fast.

If i run it full slow, then i can use 100W pump but that's not my goal...

Do you have suggestion for such pump?
I dont know how is this done on huge delta robots ...

Arnix

A small pressure pump - airbrush pumps are "a dime a dozen" - should do the job perfectly well if you have the correctly conforming suction cup as the airflow is generally not the important detail. Possibly even a fish tank pump!

I am passably curious as to the purpose of a vacuum pump in a Volvo!