Browse Prior Art Database

Dual Die and Support System

IP.com Disclosure Number: IPCOM000043610D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Bruner, CR: AUTHOR [+4]

Abstract

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.

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Dual Die and Support System

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. The manufacturing machine (not shown) indexes the material 10 between punches so that the two punch operations result in a disk having a center hub hole 12 and a given outside diameter 14. The material 10 indexing is accomplished by index holes 16 punched along the edges of the material as it is fed in. A metal belt (not shown) with index pins on it carries the tape material 10. The drive is an index driver or motor which moves the tape material 10 the right distance and keeps it from folding or buckling during travel. A second set of dies is located on the same press offset from the above- mentioned dies in the web movement direction so that disks are punched out of the material below and between the punchout positions of the uppe...