Manufacturing method and multifunctional tubular post for fences obtained by means of said method

Abstract

The invention relates to a manufacturing process and a multifunctional tubular post for fences obtained thereby, the posts ( 1 ) being used as support for a fence with wire netting, each of the posts having a plurality of joining elements ( 2 - 2′ ), the process comprising the steps of cutting from a laminated sheet reel a sheet portion ( 3 ), folding said sheet portion until achieving a tubular body, the free ends thereof being opposite, and joining said free ends. The process additionally comprises a cold-forming step between the cutting step and the folding step in order to define a plurality of grooves ( 4 - 5 ), the position and shape of which coincide with the position and shape of the joining elements ( 2 - 2′ ), the length of the mentioned grooves ( 4 - 5 ) being equivalent to the length of the outer contour of the joining elements ( 2 - 2′ ).

1 . A process for manufacturing a multifunctional tubular post for fences, the posts being of the type of those used for supporting a fence with wire netting, each one of the posts having a plurality of joining elements (tabs) for their connection on one hand with the bracing wires and on the other hand with the actual mesh, the process comprising the following steps:
 cutting from a laminated sheet reel a sheet portion with a width equivalent to the length of the perimeter of the post,   folding said sheet portion until achieving a tubular body, the free ends thereof being opposite   joining the free ends in order to form the tubular post   
     characterized in that wherein between the cutting step and the folding step a cold-forming step is carried out in order to define a plurality of grooves, each of which has a position and shape coinciding with the position and shape of each of the joining elements of the post, the length of the mentioned grooves being equivalent to the length of the outer contour of the joining elements. 
   
   
       2 . A process according to  claim 1 , wherein after the joining step for joining the free ends in order to form the tubular post, a step is carried out during which the connection area of said joining elements is bent with respect to the tubular post in order to thus unfold the ends of the corresponding joining elements. 
   
   
       3 . A process according to  claim 1 , wherein in the cold-forming step, the grooves have a U-shape. 
   
   
       4 . A process according to  claim 1 , wherein in the cold-forming step at least one pair of grooves separated a certain distance from one another is made, the side branches of the U corresponding to each of the two grooves being respectively aligned according to a direction perpendicular to the axis of rotation of the tubular post and the grooves are located symmetrically with respect to a plane passing through the mentioned axis of rotation and a point located halfway on the separation distance between both grooves, a first type of pairs of joining elements being defined. 
   
   
       5 . A process according to  claim 1 , wherein in the cold-forming step at least one pair of grooves separated a certain distance is made, wherein the central branches of the U corresponding to each of the two grooves are opposite and their respective side branches are inclined with respect to the axis of rotation of the tubular post, said grooves being symmetrically located with respect to a plane passing through the mentioned axis of rotation and a point located halfway on the separation distance between both grooves, a second type of pairs of joining elements being defined. 
   
   
       6 . A process according to  claim 1 , wherein in the cold-forming step, between two first types of pairs of joining elements, a second type of pairs of joining elements is arranged in the direction of the axis of rotation of the tubular post, defining a grouping of joining elements located at the upper portion of the tubular post taken once it has been fixed to the ground. 
   
   
       7 . A process according to  claim 1 , wherein in the cold-forming step, grooves are made which are arranged between two grooves of the first type, the shape thereof being an H-shape. 
   
   
       8 . A multifunctional tubular post for fences manufactured according to the process of  claim 1 , wherein the joining elements of the tubular post are formed on the actual post, by means of making a plurality of grooves on the sheet portion forming the planar development of the tubular post in a cold-forming step.