Vacuum Pick-Up of Press Pad With TEDLAR Sheet Cover
Original Publication Date: 1986-Nov-01
Included in the Prior Art Database: 2005-Mar-09
A method is described to permit a press pad to be picked up by use of a robot using a vacuum cup end effector. The press pad consists of 8 sheets of porous paper and 1 sheet (thin) of TEDLAR*. TEDLAR is used as a release agent so as to prevent the adhesion of the paper to the press surface during press operation. When picking up on the TEDLAR surface, a noticeable stretching of the TEDLAR material allowed the pad to extend downward 25 mm, which prevented the transfer of the pad to the layup area by the robot due to obstacles it was to pass over. Slits were cut in the four areas where the vacuum cups come into contact with the press pad surface. This allowed the vacuum to go through the TEDLAR and draw the paper sheets to the cups which eliminated the stretching problem. * Trademark of E. I. duPont de Nemours & Co.