Punched Hole Verifier
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08
This article describes the application of a microphone, or other impact-type transducer, in the proper configuration, to account for the presence of a hole slug after each cycle in a high-speed flat stock hole punching mechanism. When flat stock contains a large number of holes in a pattern, some means of hole verification must be provided immediately after each punch cycle as opposed to an inspection operation after all punch cycles have been completed. In the figure, the flat stock 4 is positioned under the punch head 2 at the proper x and y coordinates to produce the proper hole location. The punch mechanism 1 is energized, and the punch 2 penetrates the stock 4 and into the die 5. The punch is withdrawn from the hole and is positioned for the next cycle.