Cutting – With product handling means – By fluid current
Patent
1984-10-01
1987-07-21
Meister, James M.
Cutting
With product handling means
By fluid current
83 71, 83165, 83245, 83575, 83698, B26D 718
Patent
active
046810048
ABSTRACT:
Apparatus and method for forming disks or other articles from flexible sheet material. The disks can be used, for example, as substrates of magnetic recording disks known as floppy disks. The apparatus includes an upper die plate shiftably mounted above a lower die plate and having a die thereon so that a strip of material moveable between the die plates can be sequentially die-cut to form the disks. The upper die plate has quick release latches attaching the upper die plate to a support so that, when the latches are retracted, the upper die plate can be quickly and easily removed from the apparatus to permit the die to be sharpened or replaced. The apparatus includes air delivery ports near the upper and lower die plates to direct air under pressure against a disk after it has been die-cut from the strip so that the disk will be moved laterally and into a chute and onto a spindle which receives a stack of the disks. The strip is incrementally unwound from a roll and forms a low-tension loop near the entry point between the upper and lower die plates. The loop is controlled by an electric eye device which senses the presence or absence of the loop. A pair of adjacent pressure rollers receive and frictionally engage the strip near the opposite end of the apparatus to incrementally pull the strip past the die plate. A timing device controls the advancement of the strip, the lowering of the upper die plate, and the blowing of air against the disks after they are die-cut.
REFERENCES:
patent: 2579940 (1951-12-01), Lobrovich
patent: 3664220 (1972-05-01), Blair
patent: 3668958 (1972-06-01), Kinsey
patent: 3695130 (1972-10-01), Fedrigo
patent: 3796117 (1974-03-01), Mukai et al.
patent: 3872786 (1975-03-01), Holton
patent: 3982458 (1976-09-01), Terasaka
Knoble John L.
Meister James M.
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