Apparatus and process for applying a protective coating to a lens disc

摘要

An apparatus and procedure for applying a protective coating to a lens disc; the procedure comprises the positioning of trays (7) carrying lens discs, on a conveyor belt (9), which comes to a halt opposite a sensor means which detects the lenses; the tray (7) enters a coating chamber (4) provided with a coating diffusor (11); and the tray (7) comes to a halt repeatedly leaving one of the lens carried on the tray (7) opposite the diffusor (11); the pulverised coating material is sprayed onto the lens and then the tray (7) passes on to a drying section (3). The apparatus comprises trays (7) carrying lenses; a means for the transport thereof; a chamber (4), provided with a coating diffusor (11) and a gas extraction means (13); there is also a sensor means (15) and a stopping means for regulating the movement of the tray (7) as far as the drying section (3).