SYSTEM FOR CHANGING SIPE BLADES FOR MOLDING OR RETREADING TIRES

摘要

The invention relates to an apparatus for molding or retreading a tire having sipes or lamellas with an undercut in the direction of draw that blends into a groove found in its tread stock comprising: a curing member that has a top surface that contacts the tread of the tire and a bottom surface, said surfaces defining a first aperture; a sipe blade (402) that has a first portion for forming a sipe in the tire tread and a second portion that is contained within the apparatus, said first portion having an undercut in the direction of draw characterized by a male or female portion (412,416) on the front surface of the sipe blade; and a first blade holder (420) that has a body with a bottom curing surface and a first spire (424,426) that rises from the bottom curing surface to a top curing surface.