Web ​Handling And Converting

By Dr. David R. Roisum 
 
Getting into a rental car recently, I noticed that to go forward you need to pull the console shifter backward, and to go backward you need to push the shifter forward. No wonder geezers occasionally get it wrong and back into a building or, worse yet, over their grandkids.

Even more puzzling was the windshield wiper control.  Here to increase wiping you moved the column stick down and vice versa.

The problems illustrated here are far worse in consumer controls on household products and far, far worse on industrial controls. The cost of control confusion is not small if you consider that you pay for it every day for the life of the machine in terms of increased waste, delay and customer complaint. I have served as an expert witness in several cases where E-stop choices were, in part, responsible for increased personal injury on winding machines. This is the first clip in a short series on the much-neglected area of human factors in web=machine design.

Web201.51a YouTube clip link:  https://www.youtube.com/watch?v=hCkDUBy_mKA

By Dr. David R. Roisum 
 
In this final clip in my series on machine design,
I answer a few questions coming the audience from
my AllWebHandling channel YouTube.

Web201.50f YouTube clip link:
https://www.youtube.com/watch?v=zE0NelSNv90

Please also note my upcoming short-courses in Chicago
April 17-18 Web Handling, Converting and Winding -  https://www.aimcal.org/web-handling.html
April 19-20 Winding:  Machines, Mechanics and Measurements  - https://www.aimcal.org/web-winding.html

By David R. Roisum 
 
It does little good to design a productive (winding) machine and not be able to move supplies in and finished rolls out at a rate that exceeds the (re)winder’s maximum productivity.  Here we talk about the calculations used for sizing (and thus justifying) automation, how to specify reliability and how to map traffic patterns for man, machine and materials.

Winder Productivity Calculator:  https://www.stevenabbott.co.uk/abbottapps/WPC/index.html

Web201.50e YouTube clip link: 
https://www.youtube.com/watch?v=bTo9GS2OSog

Please also note my upcoming short-courses in Chicago:

April 17-18 Web Handling, Converting and Winding -  https://www.aimcal.org/web-handling.html

April 19-20 Winding:  Machines, Mechanics
and Measurements 
https://www.aimcal.org/web-winding.html

By Dr. David R. Roisum  

Rollers are the building blocks of our machinery.  Not surprisingly, the most common questions after sizing (see last post) are the best distance between rollers and what wrap angles are needed.  It turns out that one of these parameters is usually negligible and the other can be debilitating if you don’t get it right.  Find out which one is which and why.

Web201.50d YouTube clip link:
https://www.youtube.com/watch?v=DMiDIwHSjDs