Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Mold motion or position control
Patent
1995-12-28
1998-09-08
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Mold motion or position control
425574, 425592, 425593, B29C 4566
Patent
active
058042245
ABSTRACT:
A driving apparatus for an electrically-operated injection molding machine not requiring any bearing nor any connector. An electric motor having a rotor shaft on which a ball screw is integrally formed is mounted on one of a cross-head and a rear platen of a clamping mechanism, while a ball nut threadedly engaged with the rotor shaft is fixed to the other of the cross-head and the rear platen to constitute the driving apparatus for linearly moving the cross-head. As the ball screw is integrally formed on rotor shaft, any connector for connecting these two members is unnecessary. As the ball screw is directly rotated by the motor positioned coaxially with the ball screw, any bearing for bearing a redial force acting on the ball screw and rotor shaft. The apparatus may also be applied to an ejection mechanism, an injection mechanism and a nozzle touch mechanism of the electrically-operated injection molding machine.
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Inaba Yoshiharu
Ishikawa Yasushi
Ito Susumu
Nishimura Koichi
Fanuc Ltd
Pham Minh-Chau T.
Woo Jay H.
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