Help With Magnet Gripper for Robot
Help With Magnet Gripper for Robot
(OP)
Hello all, and thanks for taking time out of your day to help me.
I have a very unique problem, where we have to pick up small metal screens with a robot. About the only way I can figure out how to do this would be to use a small magnetic gripper. Something similar to this: http://www.schunk.com/schunk_files/attachments/EGM...
My worry is that these screens are stacked one on top of another in a tall stack. My limited knowledge of magnetism says that this will not work as the magnetism will 'bleed' off into the stack and it won't be strong enough to pick anything up, or it will pick up multiple screens and not just a single screen. I'm hoping you guys and gals say otherwise.
I also considered using an electromagnet with an adjustable input voltage to where I could dial it in and find a sweet spot where it would only pick up one screen at a time, but I don't know how reliable this would be.
Anyone have any ideas as to if this will work, or how to make it work?
I have a very unique problem, where we have to pick up small metal screens with a robot. About the only way I can figure out how to do this would be to use a small magnetic gripper. Something similar to this: http://www.schunk.com/schunk_files/attachments/EGM...
My worry is that these screens are stacked one on top of another in a tall stack. My limited knowledge of magnetism says that this will not work as the magnetism will 'bleed' off into the stack and it won't be strong enough to pick anything up, or it will pick up multiple screens and not just a single screen. I'm hoping you guys and gals say otherwise.
I also considered using an electromagnet with an adjustable input voltage to where I could dial it in and find a sweet spot where it would only pick up one screen at a time, but I don't know how reliable this would be.
Anyone have any ideas as to if this will work, or how to make it work?





RE: Help With Magnet Gripper for Robot
Here is a link to an industrial unit:
Link
RE: Help With Magnet Gripper for Robot
What do the screens look like? Could you do something with a vacuum approach?
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RE: Help With Magnet Gripper for Robot
A fanner was my original idea, and we have used them with good success in the past on solid sheets. However, I had the company that we buy ours from take a look at this and they are very hesitant because the side of the screen is not a solid line of metal, but rather just little points of sharp metal where ever it happened to be sheared. This scares them, as they think we won't get a very reliable pickup. I might be forced to try it out anyways.
@IRstuff
I'm having a hard time believing that tight of a control can be kept also. The screens run anywhere from 9" to 12" square, the metal lattice is about 0.75 to 1.0 mm wide metal, with the gaps that it makes being about 7-8mm squares. So, just because of the size of those holes I imagine that a vacuum wouldn't quite do it.
Thanks for taking the time to reply though guys, I really appreciate the help.
RE: Help With Magnet Gripper for Robot
Given the scenario described, I'd be tempted to suggest using gooey adhesive stuff to pick up the screen. I'm not really sure what it's called, but it's used for a variety of applications, including some sticky toys.
TTFN

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RE: Help With Magnet Gripper for Robot
RE: Help With Magnet Gripper for Robot
RE: Help With Magnet Gripper for Robot