Bending device for producing a coil for a wire mesh

Abstract

A bending device for producing a wire netting, in particular a safety net, comprises a plurality of helices which are braided with one another and at least one of which is manufactured of at least one helix blank, specifically a single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element with at least one wire, comprises a bending unit having at least one bending mandrel and at least one bending table that is configured for a bending of the helix blank around the bending mandrel, the bending table being supported in a manner fully circulating around the bending mandrel, and comprises a feed unit that is configured for conveying the helix blank along a feed axis in a feed direction, wherein the bending device comprises a geometry adjusting unit, which is configured for an adjusting of a geometry of the helix.

1 . A bending device for producing a wire netting, in particular a safety net, which comprises a plurality of helices which are braided with one another and at least one of which is manufactured of at least one helix blank, specifically a single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element with at least one wire, comprising a bending unit having at least one bending mandrel and at least one bending table that is configured for a bending of the helix blank around the bending mandrel, the bending table being supported in a manner fully circulating around the bending mandrel, and comprising a feed unit that is configured for conveying the helix blank along a feed axis in a feed direction, having a geometry adjusting unit, which is configured for an adjusting of a geometry of the helix. 
     
     
         2 . The bending device according to  claim 1 , wherein the geometry adjusting unit comprises a transverse stroke unit, which is configured to change a position of the bending table relative to the feed axis, along a main extension direction of the bending mandrel, periodically and/or in a manner synchronized with a circulation of the bending table around the bending mandrel. 
     
     
         3 . The bending device according to  claim 1 , wherein the geometry adjusting unit comprises an abutment unit with at least one abutment element defining a maximum feed-forward position for the helix blank. 
     
     
         4 . The bending device according to  claim 3 , wherein the abutment element is supported in a manner completely circulating around the bending mandrel. 
     
     
         5 . The bending device according to  claim 3 , wherein, in a circulation of the bending table, a position of the bending table with respect to the abutment element is variable. 
     
     
         6 . The bending device according to  claim 1 , wherein the abutment element comprises an abutment surface that is curved concavely. 
     
     
         7 . The bending device according to  claim 1 , wherein in at least one forward-feed operating state, in which a forward-feeding of the helix blank is effected, a position of the abutment element with respect to the feed axis is variable. 
     
     
         8 . The bending device to  claim 1 , wherein the bending table is supported pivotally around a pivot axis which itself circulates around the bending mandrel during a circulation of the bending table around the bending mandrel. 
     
     
         9 . The bending device according to  claim 1 , wherein, for the purpose of bending a helix blank, the bending unit is configured with at least one wire which is made of a high-tensile steel. 
     
     
         10 . The bending device according to  claim 1 , wherein the bending unit is configured to bend the helix blank by more than 180° in a circulation of the bending table. 
     
     
         11 . The bending device to  claim 1 , wherein the geometry adjusting unit comprises a holding unit with at least one holding element, which at least partly fixates the helix, viewed from the bending mandrel, behind the bending table in bending. 
     
     
         12 . The bending device according to  claim 11 , wherein the holding element is supported in such a way that it fully circulates around the bending mandrel. 
     
     
         13 . The bending device according to  claim 12 , wherein the holding element is supported pivotally around a pivot axis, the pivot axis itself circulating around the bending mandrel during a circulation of the holding element around the bending mandrel. 
     
     
         14 . The bending device according to one of  claim 11 , wherein the holding element is supported on the bending table. 
     
     
         15 . A method for producing a wire netting, in particular a safety net, which comprises a plurality of helices which are braided with one another, wherein at least one helix is manufactured of at least one helix blank, specifically a single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element with at least one wire, by means of a bending device according to  claim 1 .