US 9,808,853 B2
Jaw pair for punching out holes
Egbert Frenken, Heinsberg (DE)
Assigned to GUSTAV KLAUKE GMBH, (DE)
Appl. No. 14/235,879
Filed by Egbert Frenken, Heinsberg (DE)
PCT Filed Jul. 27, 2012, PCT No. PCT/EP2012/064753
§ 371(c)(1), (2), (4) Date May 15, 2014,
PCT Pub. No. WO2013/017535, PCT Pub. Date Feb. 7, 2013.
Claims priority of application No. 10 2011 052 350 (DE), filed on Aug. 2, 2011.
Prior Publication US 2014/0251104 A1, Sep. 11, 2014
Int. Cl. B21D 45/00 (2006.01); B21D 28/26 (2006.01); B21D 28/34 (2006.01); B26D 7/18 (2006.01); B26F 1/12 (2006.01); B26F 1/34 (2006.01)
CPC B21D 45/006 (2013.01) [B21D 28/26 (2013.01); B21D 28/34 (2013.01); B26D 7/1818 (2013.01); B26F 1/12 (2013.01); B26F 1/34 (2013.01); Y10T 83/2159 (2015.04)] 20 Claims
OG exemplary drawing
 
1. A jaw pair configured to punch holes or recesses in a workpiece, the jaw pair being connectable to a device, comprising:
a first jaw having a punching opening formed thereon;
a second jaw moveable relative to the first jaw;
a mount extending from the second jaw, the mount being formed of a body having a plate extending outwardly from the body, the plate having a dimension which is larger than the body;
a punch extending from the plate of the mount, the punch formed from a wall having first and second ends and an outer contour extending between the first and second ends, the second end of the punch defining a punch tip;
a stripper part comprising a side wall having first end and an opposite second end and a bottom wall at the first end of the side wall, the bottom wall having an opening therethrough, the bottom wall extending behind the first end of the punch, the plate of the mount seated within the opening in the bottom wall, the second end of the side wall forming an opening, the side wall surrounding the outer contour of the punch and the punch configured to extend through the opening formed by the second end of the side wall, the stripper part being moveable relative to the punch and relative to the mount; and
a spring having a first end and an opposite second end, the first end of the spring engaging the second jaw, and the second end of the spring configured to be engaged with the bottom wall of the stripper part and configured to be engaged with the plate of the mount, the spring being configured to bias the stripper part toward the punching opening, the stripper part being moveable relative to the punch and relative to the mount to compress the spring, wherein the second end of the spring engages with the plate of the mount and the bottom wall of the stripper part in a first position, and the second end of the spring engages with the bottom wall of the stripper part and does not engage with the plate of the mount in a second position.