Closure head for closing containers

A closure head for a closure apparatus for closing a container, having:

• a magnetic coupling having a first magnetic ring and a second magnetic ring, which interact magnetically with one another for transmitting a torque;
• and
• an adjusting device having a holding component, an adjusting component, a connecting component and a locking component, wherein:
• the adjusting component carries the first magnetic ring;
• the connecting component adjustably holds the adjusting component on the holding component for adjusting the first magnetic ring relative to the second magnetic ring for adapting a maximum closing torque;
• the connecting component is elastically pretensioned for assuming a holding position, in which the connecting component connects the adjusting component to the holding component in a rotationally fixed manner;
• and
• the locking component is elastically pretensioned for assuming a locked position, in which the locking component blocks the connecting component in the holding position.