Method and arrangement for angularly positioning a container or a preform of a container by introducing a mandrel in the bottle neck of said container and the mandrel-container arrangement for carrying it out.

摘要

The object of the invention is to position a thermoplastic container or container preform, which has a neck (1) having an internal wall (2) substantially in the form of a cylinder of revolution, in an angularly predetermined position on a mandrel (11) inserted into the said neck (1); the inner wall (2) of the neck (1) or the outer wall of the mandrel (11) respectively includes at least one approximately radial projection (8) and the outer wall (13) of the mandrel or alternatively the inner wall (2) of the neck (1) includes at least one bearing shoulder (14), facing the free end of the mandrel, in order to guide the said radial projection, this shoulder (14) extending along the wall, being inclined with respect to the axis of the mandrel or of the neck respectively, locking means being furthermore provided in order to stop the relative movement between the mandrel and the container when the neck of the container is arranged with a predetermined angular orientation with respect to the mandrel.