method and device for the production of continuous spirals with arbitrary closed polygonal constant windungsformen wire reinforcing steel or a metallic pipe

摘要

The method entails using a rotatable device, on which the bending bars (6) are suitably arranged (one for each corner of the winding of the spiral being produced). A bar (7) of suitable length and cross-section is used and an ejection device pushes away the already produced windings of the spiral (14) in a suitable manner from the production plane around at least a diameter of the wire, concrete steel or the metallic tube (1) per rotation of the rotatable device. In this way, the production plane is cleared of the already produced windings. The bending pins (8,9) of the bending units (6) are arranged in a suitable manner so that they can move simultaneously and parallel to each other for angle-halving of the corners of the spiral winding during production.