Patent ID: 6047623
Filing Date: 2000-04-11
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; andwherein said back portion comprises:an elongated pin-retainer plate generally parallel to said elongated die and having a front surface, a back surface, a first end, a second end, an outer perimeter edge, 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 with a head in back of said plate and abutting said plate back surface and a second end extending from said plate front surface to said elongated die and slidably received in one of said die holes; andwherein the die assembly further comprises:a connector slidably connecting the pin-retainer plate to the elongated die;a stop fixedly attached to said front portion and extending around the outer perimeter edge to near the back surface of the pin-retainer plate, wherein the stop limits movement of the pin-retainer plate away from the die; anda spring between the die and the back portion, the spring biasing the back portion out from the die so that the back portion abuts against the stop.