Internal High-Pressure Shaping Device

Abstract

The invention relates to a device ( 10 ) for the internal high pressure forming of a hollow profile ( 5 ), comprising a forming tool and a sealing arrangement for holding and sealing an end ( 12 ) of the hollow profile ( 5 ), this end ( 12 ) projecting from the impression ( 16 ) of the forming tool, the sealing arrangement ( 11 ) having a section ( 6 ), plunging into the hollow profile ( 5 ), of an axial punch ( 4 ) and at least one clamping jaw ( 3 ) which, when the section ( 6 ) of the axial punch ( 4 ) has plunged in, presses radially from outside on the hollow profile end ( 12 ) in such a way that the clamping jaw ( 3 ) fixes the latter in position. It is essential to the invention in this case that an actuator ( 14 ) is provided which drives the clamping jaw ( 3 ) for displacing it only radially to the hollow profile axis.

1 - 10 . (canceled)  
     
     
         11 . A device for internal high pressure forming of a hollow profile, comprising: 
 a forming tool,    a sealing arrangement for holding and sealing an end of the hollow profile, this end projecting from an impression of the forming tool, the sealing arrangement having a section of an axial punch, adapted to plunge into the hollow profile, and at least one clamping jaw which, when the section of the axial punch has plunged in, presses radially from outside on the end of the hollow profile in such a way that the clamping jaw fixes the latter in position, and    an actuator which drives the clamping jaw for displacing it only radially to an axis of the hollow profile,    wherein at least one V-ring is arranged on a side of the clamping jaw facing the end of the hollow profile.    
     
     
         12 . The device as claimed in  claim 11 , wherein the actuator is formed by or includes at least one hydraulic cylinder.  
     
     
         13 . The device as claimed in  claim 11 , wherein the actuator is formed by at least one electric motor.  
     
     
         14 . The device as claimed in  claim 11 , wherein the forming tool is formed from at least two die parts displaceable relative to one another.  
     
     
         15 . The device as claimed in  claim 11 , wherein the clamping jaw is mounted on the forming tool in such a way as to be radially displaceable relative to the axis of the hollow profile.  
     
     
         16 . The device as claimed in  claim 11 , wherein the actuator enables the clamping jaw to be displaced when the forming tool is open.  
     
     
         17 . The device as claimed in  claim 14 , wherein the forming tool is designed in such a way that the die parts can be displaced while the clamping jaw fixes the end of the hollow profile.  
     
     
         18 . The device as claimed in  claim 11 , wherein the clamping jaw is supported on the forming tool, and wherein the forming tool is supported on a foundation.  
     
     
         19 . The device as claimed in  claim 11 , wherein the clamping jaw and the forming tool are each supported on a foundation.  
     
     
         20 . The device as claimed in  claim 11 , wherein the clamping jaws can be carried along axially.  
     
     
         21 . The device as claimed in  claim 12 , wherein the actuator is formed by at least one electric motor.  
     
     
         22 . The device as claimed in  claim 12 , wherein the forming tool is formed from at least two die parts displaceable relative to one another.  
     
     
         23 . The device as claimed in  claim 13 , wherein the forming tool is formed from at least two die parts displaceable relative to one another.  
     
     
         24 . The device as claimed in  claim 12 , wherein the clamping jaw is mounted on the forming tool in such a way as to be radially displaceable relative to the axis of the hollow profile.  
     
     
         25 . The device as claimed in  claim 13 , wherein the clamping jaw is mounted on the forming tool in such a way as to be radially displaceable relative to the axis of the hollow profile.  
     
     
         26 . The device as claimed in  claim 14 , wherein the clamping jaw is mounted on the forming tool in such a way as to be radially displaceable relative to the axis of the hollow profile.  
     
     
         27 . The device as claimed in  claim 12 , wherein the actuator enables the clamping jaw to be displaced when the forming tool is open.  
     
     
         28 . The device as claimed in  claim 13 , wherein the actuator enables the clamping jaw to be displaced when the forming tool is open.  
     
     
         29 . The device as claimed in  claim 14 , wherein the actuator enables the clamping jaw to be displaced when the forming tool is open.  
     
     
         30 . The device as claimed in  claim 15 , wherein the actuator enables the clamping jaw to be displaced when the forming tool is open.