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Dual Die and Support System Disclosure Number: IPCOM000043610D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-05

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Bruner, CR Lonser, DE Maynard, KB Winkles, TG [+details]


In diskette manufacturing machines in which the raw MYLAR* material coated on both sides is fed from a roll into a punch press where the diskettes are punched from the material, material has been wasted since only one disk at a time has been punched out. In the present arrangement two disks are simultaneously punched from the sheet of material 10. The die for the one punch consists of two portions, one for punching the small hub hole 12 in the material 10 for the next disk to be formed and the other for punching along the outer diameter 14 of the previously punched hub disk hole. The dual punch portions are located separated from one another by a precise dimension along the length of the roll of material 10.