| CPC B28C 5/48 (2013.01) [B28C 5/14 (2013.01)] | 20 Claims |

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1. A vibration device for a mixing machine, comprising:
a vibration transmission device, a transmission shaft, first bearings, a first bearing housing, a second bearing having an outer ring, a second bearing housing, a mixing shaft, wherein the transmission shaft is arranged so as to pass through the first bearing housing and is supported in the first bearing housing through at least two first bearings, one end of the transmission shaft is connected to the vibration transmission device, the other end of the transmission shaft is fixedly connected to the second bearing housing, the second bearing housing is connected to a shaft head at one end of the mixing shaft by means of the second bearing, and a rotational centerline of the transmission shaft is arranged so as to be offset from an axis of an outer raceway of the second bearing, and
an eccentric sleeve arranged between the second bearing housing and the outer ring of the second bearing.
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