Forming Device

Abstract

A forming device for reforming a material web into a tube, comprising a shoulder part with a shoulder surface and a prism part with a prism surface, wherein the shoulder surface and the prism surface are connected to one another along a spatial reforming edge, which has at least one reforming edge portion with a slight curvature and at least one reforming edge portion with a strong curvature, wherein in the prism part, at least in the region of a reforming edge portion with a strong curvature, an inner former element with an inner former surface facing the prism surface is arranged in such a manner that between the prism surface and the inner former surface, a gap which runs along the reforming edge is formed, the width of said gap being adjustable.

1 . A forming device for reforming a material web into a tube, comprising
 a shoulder part with a shoulder surface and a prism part with a prism surface, wherein the shoulder surface and the prism surface are connected to one another along a spatial reforming edge, which has at least one reforming edge portion with a slight curvature and at least one reforming edge portion with a strong curvature,   wherein in the prism part, at least in the region of a reforming edge portion with a strong curvature, an inner former element with an inner former surface facing the prism surface is arranged in such a manner that between the prism surface and the inner former surface, a gap which runs along the reforming edge is formed, the width of said gap being adjustable.   
     
     
         2 . The forming device as claimed in  claim 1 , wherein the inner former element is movably mounted perpendicularly to a longitudinal axis of the prism surface. 
     
     
         3 . The forming device as claimed in  claim 2 , wherein the inner former element is flexibly mounted perpendicularly to the longitudinal axis of the prism surface. 
     
     
         4 . The forming device as claimed in  claim 1 , wherein the inner former element is movably mounted in the direction of a longitudinal axis of the prism surface. 
     
     
         5 . The forming device as claimed in  claim 4 , wherein the inner former element is flexibly mounted perpendicularly to the longitudinal axis of the prism surface. 
     
     
         6 . The forming device as claimed in  claim 3 , wherein the inner former surface forms an acute angle α with the longitudinal axis of the prism surface. 
     
     
         7 . The forming device as claimed in  claim 1 , wherein the inner former element can be fixed in at least two characteristic positions, which represent a minimal gap width and a maximal gap width. 
     
     
         8 . The forming device as claimed in  claim 7 , wherein the inner former element can be fixed between the characteristic positions in at least one intermediate position. 
     
     
         9 . The forming device as claimed in  claim 8 , wherein the inner former element can be fixed in any intermediate position. 
     
     
         10 . The forming device as claimed in  claim 8 , wherein the inner former element can be fixed in one of multiple discrete intermediate positions. 
     
     
         11 . The forming device as claimed in  claim 8 , wherein screening is provided which defines the intermediate positions. 
     
     
         12 . The forming device as claimed in  claim 1 , wherein each inner former element is operatively connected to an actuator, in order to generate movement relative to the reforming edge. 
     
     
         13 . The forming device as claimed in  claim 1 , wherein the reforming edge has at least two reforming edge portions with a strong curvature, wherein an inner former element has an inner former surface extending over the at least two reforming edge portions with a strong curvature. 
     
     
         14 . The forming device as claimed in one of  claims 1  to  13 , which comprises at least two forming elements which are movable relative to one another for adjusting the tubular cross section being produced, said forming elements each having a reforming edge portion with a strong curvature, wherein in the region of the reforming edge portion with a strong curvature of each forming element, an inner former element which is movement-coupled with the forming element is arranged.