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1. (WO2018203244) CAPPING HEAD FOR THE APPLICATION OF CAPS ON CONTAINERS OR BOTTLES

Pub. No.:    WO/2018/203244    International Application No.:    PCT/IB2018/053028
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Thu May 03 01:59:59 CEST 2018
IPC: B67B 3/20
B67B 3/26
Applicants: AROL S.P.A.
Inventors: CIPRIANI, Marco
CAFFA, Marco
FORNO, Marco
Title: CAPPING HEAD FOR THE APPLICATION OF CAPS ON CONTAINERS OR BOTTLES
Abstract:
Capping head (30) for the application of caps on containers or bottles, including a gripping assembly (10) for a cap (50). The gripping assembly (10) comprises a hollow body (11) longitudinally extending along a vertical axis (A) and internally defines a receiving and retaining seat (12) for the cap (50). The receiving and retaining seat (12) is delimited below by an inlet mouth (13) for the introduction of the cap (50). The capping head further includes a moving assembly (31) for the gripping assembly (10), connected to the gripping assembly (10) for controlling the movement thereof, and an ejector member (16) housed inside the hollow body (11) of the gripping assembly (10) and comprising a movable element (18) free to axially slide within the hollow body (11). The hollow body (11) comprises a closed end wall (17) oriented towards the moving assembly (31) so that the gripping assembly (10) is hermetically separated from the moving assembly (31). The ejector member (16) comprises at least a first magnetic element (20) suitable to magnetically interact with at least a 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) causes, by magnetic repulsion, a translation of the ejector member (16) towards the inlet mouth (13) of the gripping assembly (10). An upper chamber (19) with variable volume is located between the ejector member (16) and the closed end wall (17) of the hollow body (11). Said upper chamber (19) is a partially tightly- sealed chamber arranged to dampen the axial sliding of the ejector member (16).