Punching mechanism for punching press with multiple Linking rods

Abstract

A punching mechanism for punching press with multiple linking rods, wherein an eccentric device drives at least one rocking arm, the rocking arm driving a hinged lever-type swing arm, thereby a linking arm joined to the swinging arm drives an acting arm to lower an upper mold that is connected to the acting arm; the linked movement of the arms produce delay effects to the punching cycle, reducing vibration during punching process and extending time for flexible forming of materials, and reducing material stress.

What is claimed is:  
     
         1 . A punching mechanism for punching press machine with multiple linking rods, comprising: 
 a guide unit, having an accommodating chamber, the guide unit is capable for movement;    an eccentric device, comprising a driving arm driven by an eccentric wheel, said eccentric wheel being installed inside the accommodating chamber of the guide unit;    at least one rocking arm, having a driving end and a rocking arm end, said driving end being joined to and driven by the driving arm of the eccentric device;    at least a swinging arm, affixed in a fixed status, having a hinge position with two ends forming a swinging arm end and a hinging end, the swinging arm end being joined to the rocking arm end of the rocking arm;    at least one linking arm, having a linking end and a driving end, said linking end being joined to said hinging end of the swing arm;    at least an acting arm, moving in up-down movement, having an acting end and an operating end, said acting end being joined to the driving end of the linking arm; and    an upper mold, assembled to the operating end of the acting arm for up and down movement.    
     
     
         2 . The punching mechanism for punching press with multiple linking rods of  claim 1 , wherein a linking rod is optionally fitted to the driving arm of the eccentric device, and two ends of the linking rod respectively connected to the rocking arm.  
     
     
         3 . The punching mechanism for punching press with multiple linking rods of  claim 1 , wherein a linking rod is optionally fitted to the driving arm of the eccentric device, and two ends of the linking rod respectively connected to the guide unit.  
     
     
         4 . The punching mechanism for punching press with multiple linking rods of  claim 1 , wherein the guide unit is capable of stable movement enabled by the coordination of a chute and a guide post.  
     
     
         5 . The punching mechanism for punching press with multiple linking rods of  claim 4 , wherein the chute is installed on the guide unit, and the guide post is installed on the base of the punching press machine.