Margin hole punch locking apparatus

Details Margin hole punch locking apparatus Margin hole punch locking apparatus

1991-03-04

1992-04-14

Yost, Frank T.

Cutting

Tool or tool with support

Rotatable type

83345, 83698, B26F 110

Patent

active

051037068

ABSTRACT:
A rotary hole punching die assembly comprises a plurality of hole punch inserts mounted in radial holes circumferentially spaced around a punch wheel. A retainer ring having a plurality of projecting cogs engages the plurality of hole punch inserts and retains the inserts on the punch wheel. A clamping collar and key are assembled with the punch wheel and retainer ring on a rotary mandrel, and secure the punch wheel and retainer ring against axial and rotational movement relative to the mandrel. The rotary hole punching die assembly prevents any one hole punch insert from being disassembled from the assembly without removing the entire assembly from the rotary mandrel, and the entire assembly cannot be removed from the mandrel without first removing the mandrel, along with the assembly, completely from the rotary press.

REFERENCES:
patent: 2598649 (1952-05-01), Rintoul
patent: 3106859 (1963-10-01), Huffman
patent: 3828632 (1974-08-01), Grano
patent: 4434690 (1984-03-01), Mauer
patent: 4594926 (1986-06-01), Propheter
patent: 4604931 (1986-08-01), Bastian et al.
patent: 4688459 (1987-08-01), Osborn et al.

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