Capping head for the application of caps on containers or bottles

A capping head (30) for the application of caps on containers or bottles, wherein said capping head (30) comprises:

• a gripping assembly (10) for gripping a cap (50), wherein said gripping assembly (10) comprises a hollow body (11) longitudinally extending along a vertical axis (A) and internally defining a receiving and retaining seat (12) for the cap, the receiving and retaining seat (12) being delimited at its lower end by an inlet mouth (13) for the introduction of the cap (50);
• a moving assembly (31) located in an operating upper part of the capping head connected to the gripping assembly (10) for controlling the translation and/or rotation movements of the gripping assembly (10) and hermetically separated from the gripping assembly (10) by a partition wall (21) allowing an isolation of an aseptic lower part of the capping head including the gripping assembly (10) from the operating upper part of the capping head;
• and
• an ejector member (16) housed inside the hollow body (11) of the gripping assembly (10), in such a manner that it is free to axially slide;
• wherein the ejector member (16) carries at least one first magnetic element (20) suitable to magnetically interact with at least one second magnetic element (23) having the same polarity placed outside the gripping assembly (10) and at an axial height greater than the first magnetic element (20) such that a relative axial approach of the second magnetic element (23) towards the first magnetic element (20) results in a translation of the ejector member (16) towards the lower inlet mouth (13) of the gripping assembly (10);
• and
• wherein the partition wall (21) is arranged within the hollow body (11) orthogonally to the vertical axis (A) and above the ejector member (16) and is made of magnetic material or of a magnetizable material so as to define a corresponding suspension member suitable for the magnetic interaction with the first magnetic element (20) so as to determine a suspension condition of the ejector member (16), and wherein the partition wall (21), besides acting as a suspension member for the ejector member (16), also provides an upper end stop for the axial sliding of the ejector member (16).