Method of making a spacer frame assembly

摘要: A method of making a spacer frame assembly including the steps providing supply thin, flexible relatively narrow sheet metal ribbon stock, feeding stock endwise to first forming station, stamping form corner structures at station by defining zones weakness locations spaced along stopping movement through while stamping, second and roll define rigid linearly extending element having opposite side walls base wall, disposed least in part channel walls. The further includes severing leading trailing ends, accumulating between stations comprising variable length travel path segment, maintaining substantially continuous increasing segment when speed is greater than reducing station.