Crimping Tool

Abstract

The present invention relates to a crimping tool, in particular crimping pliers. The crimping tool comprises crimping die halves having a resilient deformation region. At the end of a crimping process the resilient deformation region is elastically deformed with the result that the crimping contour opens and contour parts automatically move apart. Accordingly, the crimping contour “breaks free” from the work piece for an ease of the removal of the work piece from the crimping tool.

1 . A crimpinq tool with two crimping die halves designed and configured for crimping a work piece in a crimping process, at least one of said crimping die halves comprising
 a) a crimping contour having two contour parts,   b) ejection force regions located distant or laterally from said crimping contour,   c) a resilient deformation region, said resilient deformation region
 ca) connecting said contour parts and 
 cb) determining the distance of said contour parts and/or the angle between said contour parts, 
   d) a drive mechanism designed and configured for moving said crimping die halves towards each other
 da) in a first region of distances of said crimping die halves wherein in said first region said crimping die halves crimp the work piece with no substantial forces applied upon the ejection force regions and 
 db) in a second region of distances of said crimping die halves wherein forces are applied upon the ejection force regions, these forces elastically deforming said resilient deformation region and increasing the distance of said contour parts or the angle between said contour parts from a crimping state to an ejection state. 
   
     
     
         2 . The crimpinq tool of  claim 1 , wherein a cross section of said resilient deformation region taken along a crimping axis comprises a geometrical moment of inertia which is smaller than the geometrical moment of inertia of cross sections of said crimping die half located laterally from said elastic deformation region. 
     
     
         3 . The crimpinq tool of  claim 2 , wherein said crimping die half comprises at least one recess or bore located behind said crimping contour when seen along said crimping axis. 
     
     
         4 . The crimping tool of  claim 1 , wherein at least one of said ejection force regions has a contact surface being slanted with respect to a crimping axis. 
     
     
         5 . The crimping tool of  claim 1 , wherein a fixing element is provided, said fixing element being designed and configured for temporarily blocking the deformation of said resilient deformation region in said crimping state and for fixing the distance of said contour parts or the angle between said contour parts in said crimping state. 
     
     
         6 . The crimping tool of  claim 3 , wherein a fixing element is provided, said fixing element being designed and configured for temporarily blocking the deformation of said resilient deformation region in said crimping state and for fixing the distance of said contour parts or the angle between said contour parts in said crimping state. 
     
     
         7 . The crimping tool of  claim 6 , wherein said fixing element is designed and configured for at least partially filling said recess in said crimping state and for being located without contact to the recess in said ejecting state. 
     
     
         8 . The crimping tool of  claim 1 , wherein said crimping die half comprises a plurality of nests. 
     
     
         9 . The crimping tool of  claim 1  comprising a spreading element, said spreading element being linked with a manipulation element, wherein with a manipulation of said manipulation element the spreading element, contacts at least one of said crimping die halves for applying a spreading force upon said crimping die half.