Shot tube plunger tip portion

Abstract

A die casting system according to an exemplary embodiment of this disclosure can include a shot tube plunger and a tip portion connected to the shot tube plunger. The tip portion can include an inner flange and a lip portion circumferentially disposed about the inner flange. A recess can be circumferentially disposed between the lip portion and the inner flange.

1 . A die casting system, comprising:
 a shot tube plunger; and   a tip portion connected to said shot tube plunger, wherein said tip portion includes an inner flange and a lip portion circumferentially disposed about said inner flange, and a recess is circumferentially disposed between said lip portion and said inner flange.   
     
     
         2 . The system as recited in  claim 1 , wherein said lip portion includes a radially inner wall and said inner flange includes a radially outer wall and said recess extends between said radially inner wall and said radially outer wall. 
     
     
         3 . The system as recited in  claim 2 , wherein said radially inner wall and said radially outer wall are angled relative to a floor of said recess. 
     
     
         4 . The system as recited in  claim 1 , wherein said inner flange and said lip portion are concentric about a longitudinal axis of said tip portion. 
     
     
         5 . The system as recited in  claim 1 , wherein said inner flange includes an outermost surface that extends in a first plane that is axially offset from a second plane of an outermost surface of said lip portion. 
     
     
         6 . The system as recited in  claim 5 , wherein said first plane is axially offset from said second plane in a direction that extends from a rear face toward a front face of said tip portion. 
     
     
         7 . The system as recited in  claim 1 , wherein said recess is positioned radially inwardly from an outer peripheral surface of said tip portion. 
     
     
         8 . The system as recited in  claim 1 , wherein said tip portion is cylindrical shaped. 
     
     
         9 . The system as recited in  claim 1 , wherein said tip portion is at least partially hollow and establishes an internal cooling chamber. 
     
     
         10 . The system as recited in  claim 1 , wherein said lip portion extends between an outer peripheral surface of said tip portion and a radially inner wall. 
     
     
         11 . The system as recited in  claim 1 , wherein said lip portion is circumferentially disposed about a front face of said tip portion. 
     
     
         12 . A die casting system, comprising:
 a die including at least one die element that defines a die cavity;   a shot tube in fluid communication with said die cavity;   a shot tube plunger moveable within said shot tube to communicate a charge of material into said die cavity, and   a tip portion connected to said shot tube plunger and having a front face, a rear face and an outer peripheral surface that extends between said front face and said rear face, wherein a lip portion circumferentially extends about said front face of said tip portion and establishes a recess at a radially inward position from said outer peripheral surface of said tip portion.   
     
     
         13 . The system as recited in  claim 12 , wherein said recess is circumscribed by said lip portion. 
     
     
         14 . The system as recited in  claim 12 , wherein said lip portion includes a radially inner wall and an inner flange includes a radially outer wall and said recess extends between said radially inner wall and said radially outer wall. 
     
     
         15 . The system as recited in  claim 12 , wherein said lip portion extends between said outer peripheral surface and a radially inner wall of said lip portion. 
     
     
         16 . The system as recited in  claim 12 , wherein said recess circumferentially extends about said front face and in a direction that extends from said front face toward said rear face. 
     
     
         17 . The system as recited in  claim 12 , wherein said die casting system is a vacuum die casting system. 
     
     
         18 . A method of providing a tip portion of a shot tube plunger, comprising:
 circumferentially positioning a lip portion about an inner flange of the tip portion, the tip portion connected to an axially forward most portion of the shot tube plunger; and   positioning a recess between the lip portion and the inner flange.   
     
     
         19 . The method as recited in  claim 18 , wherein the step of positioning the recess includes positioning the recess between a radially inner wall of the lip portion and a radially outer wall of the inner flange. 
     
     
         20 . The method as recited in  claim 18 , wherein the step of positioning the recess includes positioning the recess radially inwardly from an outer peripheral surface of the tip portion. 
     
     
         21 . The system as recited in  claim 1 , wherein said tip portion is threadably received on a protruding member of said shot tube plunger. 
     
     
         22 . The system as recited in  claim 1 , comprising a cooling tube that extends into said tip portion. 
     
     
         23 . The system as recited in  claim 1 , wherein said inner flange is positioned axially forward of a forward most portion of said shot tube plunger. 
     
     
         24 . The system as recited in  claim 5 , wherein said first plane is axially offset from said second plane in a direction that extends from a front face toward a rear face of said tip portion. 
     
     
         25 . The system as recited in  claim 12 , wherein said tip portion includes an inner flange that is axially offset from an outermost surface of said lip portion, said inner flange offset in a direction that extends from said front face toward said rear face.