Capping unit for automatically assembling pump-operated spray cap

Abstract

A capping unit wherein a number of capping heads, movable with a supporting carrousel conveyor about a first axis, are each rotated about a respective second axis by a respective first shaft movable axially on the carrousel conveyor, for moving the respective head to and from a respective container movable with the carrousel conveyor and coaxial with the second axis. Each head provides for closing the respective container with a cap presenting an internally threaded ring nut mounted for rotation on a pump-operated nozzle, and presents a first and second gripping device for respectively gripping the nozzle and the ring nut and controlled by a second shaft movable axially in relation to the first shaft. The first gripping device is angularly fixed in relation to the carrousel conveyor, whereas the second gripping device rotates with the capping head about the second axis.

Dependencies are inferred from the claim text.