APPARATUS AND METHOD FOR LASER ENGRAVING THIN SHEET-LIKE MATERIALS

摘要

A laser engraving apparatus (10) and method for engraving a workpiece (15) which includes a mask (11) having at lest one image opening (14) extending therethrough. A suction housing (21) is operably coupled to a source of partial vacuum (19) and includes a mouth portion (22) positioned proximate the mask (11) to hold the workpiece (15) and the mask (11) in abutting contact. A laser cutting assembly (24) generates a laser beam (26) which is directed onto the exposed surface (16) under the mask (11) causing engraving thereof. Vaporization or engraving by-products are drawn away from the vaporization surface (16) through the partial vacuum used to hold the mask (11) and workpiece (15) together. The partial vacuum also may be used to cool the mask (11).