Verfahren und Vorrichtung zur Herstellung von Treibriemen mit Längsrillen.

摘要

A flexible annular element (2) made of vulcanized rubber and having a flattened rectangular section is mounted around two support rollers (4, 5) that are then operated in rotation so as to move the annular element (2) according to the direction of its longitudinal extension. One set of knives (13) is designed to transversely penetrate into the annular element (2) for producing one series of longitudinal notches (13a) thereon, which extend parallelly in the section of the annular element (2) according to a predetermined depth and in an inclined direction relative to the perpendicular line of an operating surface (2a) of the annular element itself. A second set of knives (14) produces a second series of longitudinal mutually-parallel notches (14a) having an inclined orientation relative to the notches of the first series and connecting with the latter so as to give origin to a series of longitudinal grooves (12) in the annular element (2).