AUTOMATIC MASK-FRAME INSERTER

摘要

RCA 74,211 An automatic apparatus is provided for inserting a mask assembly into a cathode ray tube faceplate panel. The mask assembly includes an apertured shadow mask having at least three springs attached thereto with each spring including an aperture. The faceplate panel includes a viewing faceplate portion and a peripheral sidewall including at least three studs embedded therein for engagement with the spring apertures. The automatic apparatus includes a subassembly at each mask spring location. At least three of said subassemblies are movable horizontally and include a stop for contacting the lower edge of a mask spring. Each movable subassembly also includes a locator pin movable between an engaged position and a disengaged position. The locator pin, when in an engaged position, is spaced from the stop a predetermined spacing equal to a standard spacing between a lower edge of a spring and the centerline of the spring aperture plus a predetermined lifting distance. Each movable subassembly further includes a fork-shaped member or stud finder centered with the location pins.