Patent ID: 6651540
Filing Date: 2003-11-25
Classification: B23D,B26F,Y10T

Abstract:
A paper punch machine die assembly comprising:a front portion and a back portion; wherein said front portion comprises an elongated die having a longitudinal axis, a slot parallel to the longitudinal axis for receiving paper and a plurality of die holes extending perpendicularly to the longitudinal axis; and wherein said back portion comprises: an elongated pin-retainer plate generally parallel to said elongated die and having a front surface, a back surface, a longitudinal axis, and a plurality of retainer holes extending through said plate from the back surface to the front surface; a plurality of punch pins slidably extending through said retainer holes, each punch pin having a first end in back of said plate and a second end extending from said plate front surface to said elongated die and slidably received in one of said die holes; wherein the die assembly further comprises: a strap movable to a first position extending across the first ends of said pins and holding the pins in the pin-retainer plate, and movable to a second position away from and revealing said pin first ends to allow removal of said pins from the pin-retainer plate; and a quick-releasable latch system for holding the strap in the first position, the latch system being quick-releasable to free the strap to move into the second position.