Cap screwing-on device includes controller for interrupting tightening of cap when relative rotation reaches predetermined threshold, and detector that detects relative rotation between rotary spindle and drive shaft

摘要

The cap screwing on device includes a controller for interrupting tightening of a cap when the relative rotation reaches a predetermined threshold. A detector is used to detect the relative rotation between the rotary spindle (7) and the drive shaft (2). The rotary spindle and the drive shaft are connected to each other on the same axis by a resilient coupling (10,11).