Apparatus and method for producing a cutting geometry in a closure cap for a container

A method for producing a cutting geometry running in the a circumferential direction in a shell of a closure cap for a container, said method comprising the following steps:

• a) providing the closure cap;
• b) transporting the closure cap along a transport path by a transport installation;
• wherein
• c) the closure cap is fed to a machining section of the transport path, in which machining section a stationary cutting knife having a cutting blade that extends along a cutting section is disposed;
• and
• d) a cutting procedure for generating the cutting geometry in the machining section is carried out by rolling the shell on the cutting blade of the stationary cutting knife;
• wherein a feeding of the closure cap to the machining section takes place at a predefinable orientation in terms of a rotary position in relation to a central axis of the closure cap in that a driver of the transport installation that rotates about a rotation axis is brought to engage with a detent of the closure cap, and a movement of the rotating driver is controlled in such a manner that, when the closure cap enters the machining section, the driver has a rotary position that corresponds to the predefinable orientation of the closure cap, wherein a rotation of the closure cap about the central axis thereof in the machining section is controlled in such a manner that the closure cap is set in a predefinable rotation about the central axis thereof, wherein the rotating movement of the rotating driver and/or of the closure cap upon entering the machining section is controlled in such a manner that an angular velocity of the rotating driver about the rotation axis thereof is lower than the angular velocity of the closure cap about the central axis of the latter.