| 摘要 |
A labelling machine comprises a revolving carrier with at least one pickup element rotatably mounted thereon. A stationary sun gear is provided and the drive for each pickup element includes a drive spindle, a pinion meshing with the sun gear and axially displaceable with respect thereto and coupled to the drive spindle. The coupling includes a cam-controllable compensating drive which comprises two opposite cam pieces which are axially displaceable with respect to the drive spindle and connected for rotation with the pinion, at least one driver disposed between the cam pieces for driving the spindle in response to the rotation of the pinion and axially settable to eliminate free play. Cam control for the compensating drive comprises an axial cam and a bipartite cam follower which is mounted for axial adjustment to eliminate free play.
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