Individual-spindle-drive type multiple twister

Details Individual-spindle-drive type multiple twister Individual-spindle-drive type multiple twister

1999-05-17

2000-11-21

Calvert, John J.

Textiles: spinning, twisting, and twining

Apparatus and processes

Driving

57133, 57136, 57 92, 310 68, D01H 1300

Patent

active

061485969

ABSTRACT:
In an individual-spindle-drive type multiple twister that directly employs separate motors to drive the spindle shafts of each twisting unit, when a spindle is inserted into the housing during motor assembly, a rotor and a stator may attract each other and adhere to each other, and this attraction may prevent the spindle shaft from being correctly inserted into a target bearing, thus making it difficult to assemble the motor. A spindle shaft 4 is rotatably supported by bearings 27a and 28a mounted onto upper and lower supporting members 27 and 28. The distance A between the lower end of the rotor magnet 32 of the drive motor 10 fixed to the spindle shaft 4 and the lower end of the spindle shaft 4 is longer than the distance B between the upper end of the stator coil 31, which is fixed to the housing 34 of the drive motor 10, and the bearing 28a of the lower supporting member 28. In addition, the tip 4 of the spindle shaft 4c is tapered to facilitate insertion.

REFERENCES:
patent: 3742268 (1973-06-01), Volkrodt
patent: 4361004 (1982-11-01), Hartmannsgruber
patent: 4908534 (1990-03-01), Gubler et al.
patent: 5572859 (1996-11-01), Derichs et al.

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