MACHINE, METHOD FOR MAKING REINFORCED IRRIGATION PIPES AND PIPE THUS OBTAINED

摘要

A machine (15) for making irrigation or garden pipes (1) of the type having reinforcement stitchwork (3, 3A, 3B, 9) and a longitudinal axis (X), the machine comprising a first group (16) and a second stitchwork group (17), substantially similar to each other, except for the stitchwork and thread distribution head (20, 21), and arranged facing one another according to the axis (X) of the pipe (1), each stitchwork group (16, 17) processing a set of threads (4, 5) that form the reinforcement stitchwork (3, 3A, 3B, 9) the stitchwork groups (16, 17) comprising a respective stitchwork head (20), provided with needles (35) and with a distributor (33) for the threads, and a head stitchwork (21) equipped with only the distributor (34) for threads, the heads (20, 21) rotating with opposite rotation directions and cooperate with one another so as to form a reinforcement stitchwork (3, 3A, 3B, 9) with a single layer with a set of threads (4, 5) with opposite helicoidal extension; the invention also foresees a method for making the irrigation or garden pipe and the pipe thus obtained.