Patent ID: 6033613
Filing Date: 2000-03-07
Classification: B26F,B29C,Y10T

Abstract:
A method of injection molding an article having a peripheral frame forming an opening and carrying an insert panel for closing said opening, said method comprising the steps of providing a split mold including an inner open quadrant, associating a strip of material with said mold in facing relation to said open quadrant, providing a punch opposing said strip material remote from said mold and in alignment with maid mold, moving said punch towards said mold to first shear from said strip material a panel insert, then by continuing to move said punch towards said mold, clamping the panel insert against said mold with that panel insert and said punch forming parts of said mold and closing said open quadrant of said mold, and injecting a flowable material into said mold, and including the step of forming radially inwardly directed screw threads on said peripheral frame by providing radially outwardly directed screw threads on said punch.