Title:
DIRECT DRIVE FOR A ROTATION MACHINE, PARTICULARLY FOR A CONTAINER TREATMENT MACHINE
Document Type and Number:
WIPO Patent Application WO/2013/139502
Kind Code:
A3
Abstract:
The invention relates to a direct drive for a rotation machine, particularly for a container treatment machine, said drive consisting substantially of a fixed machine part (1) and a machine part (2) rotating around a vertical machine axis, wherein the rotating machine part (2) is rotationally connected to the fixed machine part (1) by means of a roller bearing (3) arranged between the two machine parts (1, 2) and consisting of an outer bearing ring (4), an inner bearing ring (5) and a plurality of rolling elements rolling between said bearing rings (4, 5), and can be driven by a torque motor (7). On the rotating machine part (1), a plurality of magnets (8) is provided, surrounding said rotating machine part, while on the fixed machine part (1), a stator (12) consisting of a plurality of electric coils (9, 10, 11) is arranged, such that the rotating machine part (2) can be set in a defined rotational motion through an electromagnetic field generated when the stator (12) is energised in cooperation with the magnets (8). According to the invention, the stator (12) on the fixed machine part (1) is formed as a full ring of 360° covering, without gaps, all magnets (8) on the rotating machine part (2), said full ring being composed of a number of stator ring segments (13.1, 13.2, 13.3, 13.4, 13.5) adjacent to one another and connected to one another by an electrical series connection and also composed of a number of stop elements (14.1, 14.2, 14.3, 14.4, 14.5) arranged between the stator ring segments (13.1, 13.2, 13.3, 13.4, 13.5) for fixing the stator ring segments (13.1, 13.2, 13.3, 13.4, 13.5) in a circumferential and radial direction.
Inventors:
SCHMID GÜNTER (DE)
DITTENHÖFER THOMAS (DE)
SCHÜLER RALF (DE)
DITTENHÖFER THOMAS (DE)
SCHÜLER RALF (DE)
Application Number:
PCT/EP2013/051205
Publication Date:
June 12, 2014
Filing Date:
January 23, 2013
Export Citation:
Assignee:
SCHAEFFLER TECHNOLOGIES AG (DE)
International Classes:
H02K26/00; H02K1/18; H02K3/52; B67C3/22
Foreign References:
| DE10210071A1 | 2003-10-09 | |||
| DE19756575A1 | 1999-07-01 |
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