Rotary punch

Details Rotary punch Rotary punch

2011-07-19

2011-07-19

Nguyen, Phong H (Department: 3724)

Cutting

Cutting motion of tool has component in direction of moving...

C083S037000, C083S320000, C083S321000

Reexamination Certificate

active

07980162

ABSTRACT:
A rotary punch includes an upper die plate, a lower die plate, and a support frame having a drive assembly that moves the upper die plate horizontally and vertically along a generally circular pathway. The lower die plate is connected to the support frame for movement in a linear horizontal direction only. The upper die plate is vertically slidably connected to the lower die plate by way of one or more vertical rods attached to the upper die plate that extend down through bushings provided in the lower die plate. In operation, the lower die plate horizontally follows the upper die plate as the latter is moved along its circular pathway. Concurrently, the upper plate moves towards and away from the lower plate. This maintains a substantially constant alignment between the die plates for carrying out a periodic machining operation on a moving web of material passing there between.

REFERENCES:
patent: 3722336 (1973-03-01), Sarring
patent: 3733947 (1973-05-01), Bryson et al.
patent: 3848494 (1974-11-01), Gargrave et al.
patent: 4615249 (1986-10-01), Geiser
patent: 5195412 (1993-03-01), Flemming et al.
patent: 6205898 (2001-03-01), Surina
patent: 7117777 (2006-10-01), Wilkes
patent: 2002/0092394 (2002-07-01), Rathert
patent: 2003/0079584 (2003-05-01), Cote et al.

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