Device and method for bending pipes

Abstract

A device for bending a pipe includes a pipe feed device configured to continuously advance the pipe in a longitudinal direction of the pipe feed device; a bending arm pivotable about a rotation axis and having a pipe holding device securable on the bending arm in a first fixing position and in a second fixing position, the first fixing position disposed on the other side of a centre axis of the bending arm from the second fixing position, the pipe holding device configured to detachably secure the pipe, wherein the feed device and the bending arm are movable relative to one another such that the feed device and the rotation axis can be moved past one another; and a heating device disposed in a pipe feed direction and configured to heat an area of the pipe.

1 - 50 . (canceled) 
     
     
         51 . A device for bending a pipe comprising:
 a pipe feed device configured to continuously advance the pipe in a longitudinal direction of the pipe feed device;   a bending arm pivotable about a rotation axis and having a pipe holding device securable on the bending arm in a first fixing position and in a second fixing position, the first fixing position disposed on the other side of a centre axis of the bending arm from the second fixing position, the pipe holding device configured to detachably secure the pipe, wherein the feed device and the bending arm are movable relative to one another such that the feed device and the rotation axis can be moved past one another; and   a heating device disposed in a pipe feed direction and configured to heat an area of the pipe.   
     
     
         52 . The device as recited in  claim 51 , wherein a height of the feed device is adjustable. 
     
     
         53 . The device as recited in  claim 51 , wherein a height of the bending arm is adjustable. 
     
     
         54 . The device as recited in  claim 51 , wherein the feed device can be moved from a first feed position to a second feed position. 
     
     
         55 . The device as recited in  claim 51 , wherein the bending arm can move from a first bending position to a second bending position. 
     
     
         56 . The device as recited in  claim 51 , further comprising a displacement device configured to displace the bending arm from a first bending position to a second bending position such that the heating device is disposed aligned with the rotation axis in the first and the second bending positions. 
     
     
         57 . The device as recited in  claim 51 , wherein the holding device is detachably secured on the bending arm. 
     
     
         58 . The device as recited in  claim 51 , wherein the heating device includes at least one induction heating ring surrounding the pipe. 
     
     
         59 . The device as recited in  claim 58 , further comprising a control unit for the feed device, the bending arm, and the heating device and a sensor coupled with the control unit and configured to check a wall thickness of the pipe. 
     
     
         60 . A bending arm for a device for bending a pipe comprising:
 a pivoting arm pivotable about a rotation axis and defining a centre axis running in a longitudinal direction of the pivoting arm; and   at least one holding device disposed on the pivoting arm and configured to secure the pipe on the bending arm, wherein the at least one holding device is securable in a first and a second fixing position on the pivoting arm, the first fixing position disposed on the other side of a centre axis of the bending arm from the second fixing position.   
     
     
         61 . The bending arm as recited in  claim 60 , wherein the first and the second fixing positions are disposed mirror-symmetrically about the centre axis. 
     
     
         62 . The bending arm as recited in  claim 61 , wherein bolts secure the holding device can be secured to the pivoting arm by bolts. 
     
     
         63 . A method for bending a pipe comprising:
 providing a bending arm disposed pivotally about a rotation axis and having a holding device for the pipe, wherein the pipe is detachably securable in the holding device, a feeding device configured to advance the pipe in a longitudinal direction, and a heating device configured to heat an area of the pipe;   in a first step, bending the pipe in a first direction and releasing the pipe by the bending arm from the holding device from a first fixing position;   in a second step, moving the feed device and the bending arm relative to one another so that the feed device and the rotation axis move past one another and securing the pipe on the holding device in a second fixing position on the bending arm, wherein the first fixing position is disposed on the other side of a centre axis of the bending arm from the second fixing position; and   in a third step, bending the pipe in a second direction.   
     
     
         64 . The method as recited in  claim 63 , wherein the moving the feed device past the rotation axis of the bending arm is performed using a displacement device. 
     
     
         65 . The method as recited in  claim 64 , wherein the moving the bending arm so as to move the rotation axis past the feed device is performed using the displacement device.