UNIT FOR MANUFACTURING BEADS FOR TYRES, COMPRISING A CRIMPING STATION PROVIDED WITH A SUB-ASSEMBLY FOR AUTOMATICALLY PREPARING CRIMPING SLEEVES

摘要

The invention relates to a crimping station (1) comprising a set of crimping jaws (2) designed to crimp a sleeve (3) around a first end portion (5) of a wire (4) and a second end portion (6) of a wire (4), the crimping station comprising a sleeve preparation sub-assembly (10) which comprises a supply device (20) which provides a metal band (11) and which conveys the band as far as a shaping device (30) designed to plastically deform the band (11) in order to impart the band with a concave, inwardly curved cross-section (11S) so as to obtain a preformed band (11A), then as far as a cutting device (40) which is designed to sever a portion of the length of the preformed band (11A) in order to obtain a sleeve preform (12) which a loading tool (50) places inside the set of crimping jaws (2).