Diseño y construcción de una matriz para fabricación de mascarillas mediante termoformado usando software cad/cam y tecnología cnc.

Abstract

The present work uses concurrent engineering as the methodology for the development of a mechanical thermoforming die for mask molding, considering the main functions that the set of molds and the thermoforming machine must fulfill. CAD/CAM tools were also used to develop the mask prototype and generate the G-code, which allowed the construction of the geometries of the dies in the machining center of the Machine-Tools laboratory. Once "Duraluminium 7075" was machined, which is the material from which the molds were made, an electrical resistance was inserted to generate heat and thermoform polymeric materials (polypropylene and polyester, which are the most used in the current mask market). All this allowed us to obtain a product that complies with the proposed geometry and can cover areas ranging from the nose to the chin since it was focused on the use of the public.