Society of Robots - Robot Forum
Electronics => Electronics => Topic started by: alexander on November 07, 2010, 11:04:41 AM
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Hi.
Sorry if it's a dumb question.
I need the effect of attracting paper with an acrylic electrified by friction.
Is there any other way to pick a paper using electricity without friction?
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Alexander
Brazil
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Basically when you rub acrylic you are rubbing off (through friction) electrons or moving them to the acrylic which make the acrylic positively or negatively charged. This attracts the paper. I am sure there are other ways but I don't know any
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Hi,
I need the effect of attracting paper with an acrylic electrified by friction.
Is there any other way to pick a paper using electricity without friction?
Sure, look up "negative ion generators" or "static electricity paper holder" (used on some flat bed plotters).
Making a meander pattern, like a raindrop detector and feeding it as high a voltage as possible without flash-over will go a long way, but you need to get it in close contact with the paper to get it to "grab".
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Thank you Soeren, I'll look for it.
I need a very simple device, just to grab a single page of a book, in other words, it will touch the paper, no problem with the distance, no problem making a robot arm to touch the paper and move the pick along an angle. It shouldn't be too big, of course.
I just don't know how to do that without put a DC motor spining an acrylic cilinder over a piece of wool.
[]s
Alexander
Brazil
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Hi,
I need a very simple device, just to grab a single page of a book, in other words, it will touch the paper, no problem with the distance, no problem making a robot arm to touch the paper and move the pick along an angle. It shouldn't be too big, of course.
Did you consider vacuum?
A simple system like one of the tiny battery or USB supplied vacuum cleaners for keyboards should have more than enough suction for a page flipping device. Using a bit of tubing, the motor could be mounted away from the actual "gripper head".
Here's one of them (http://www.amazon.com/Vacuum-Cleaner-hoover-Laptop-Keyboard/dp/B000MVD55E)
You could probably find something similar but cheaper - or make enough vacuum by using a small fan from a processor heat sink or similar.
If you aren't accustomed to working with high tension, this may be a better way to do it.