DEVICE FOR A PIPE BENDING TOOL

The present invention relates to a tube bending tool (1) comprising support surfaces (2, 2', 2''), between which a tube (3) which shall be bent, is placed for bearing on and pressing against portions of the mantle surface (4, 4') of the tube (3) in providing a bend (5), said tube bending tool (1) has a pressure exerting unit (6) comprising at least one extension (8) displaceable forwards against the tube (3), where a convex bend bearing surface in the form of a shablon (10) is provided to press against the mantle surface of the tube (3). The front portion (9) has two elongated elements (12, 12'), which are cross-laid and provided flexible in their first ends (13, 13') in order to during bending press in a direction against the bending radius center, whereby different radius of the bend (5) on selected places can be done and just before a wanted bending angle has been reached a tension belt (25) fixed in two coupling links (26, 26'), so that this is can be tensioned against the side of the bent tube (3) and makes it possible that a distance between the supporting elements (15, 15') on existing supporting axis (18, 18') is decreased, which means that a spring back in the bent tube (3) disappears so that the same is loosen from the bending tool (1).