Patent ID: 6021562
Filing Date: 2000-02-08
Classification: B23P,Y10T

Abstract:
A self-clinching fastener insertion module for use in a progressive die of a stamp press and for inserting fasteners into a sheet of material, comprising:a first narrow body member having a top, bottom, opposite ends interconnecting the top and the bottom, and a first vertical bore at one end of said ends extending completely through said body member from the top to the bottom;a horizontal track extending along said bottom and communicating with said bore;an expandable annular bushing in said bore at a location where said track communicates with said bore, wherein the bushing is capable of receiving fasteners laterally from said track;a slidable member mounted to said first body member above said track and having a spring-loaded arm extending into said track for urging the fasteners forward along said track and into said bushing;a second narrow body member attachable to an upper platen of the stamp press, the second body member being slidably attached to said first body member and separated therefrom by a plurality of springs urging said body members apart from one another, and the second body member having a second vertical bore therein in axial alignment with said first vertical bore;a removable anvil attached to said second body member, wherein the anvil includes a top portion and a shaft extending downwardly from the top portion into said first vertical bore; anda removable pressure transmission means, in said second vertical bore above said top portion of said anvil and in force transmitting relationship therewith, for dampening transmission of force from the upper platen to said anvil when thickness of the fasteners increases from one to another or when thickness of the sheet of material into which the fasteners are inserted increases from one portion to another.