Abstract:
Device for rapidly mounting/releasing units (1,1a) for fitting caps or lids to containers, in particular for mandrels (20) of automatic machines (21,21a), comprising at least one tube (11) which is fixed to the mandrel (20) and on which there are coaxially mounted at least one bell-piece (18) integral with said tube (11) and at least one bush (12,17) partially sealingly inserted in said bell-piece (18), so as to form a chamber (18a), and designed to translate coaxially with said bell-piece under the thrusting action of resilient means (16) and a fluid under pressure which can be supplied, upon command, to said chamber (18a), there also being provided means (13,13a) for fixing the unit (1,1a) to said bush (12), which means extend radially from said unit (1a,1) and are designed to co-operate with a shaped eyelet (12c,12e) formed on the side surface of the bush (12).