Control device for motor-driven injection molding machine capabl

Details Control device for motor-driven injection molding machine capabl Control device for motor-driven injection molding machine capabl

1997-06-06

1999-06-15

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

With electrical control system

Of ram or platen reciprocation in press molding cycle

425149, 425595, B29C 4566

Patent

active

059120258

ABSTRACT:
In a control device for a motor-driven injection molding machine comprising a mold clamping system which comprises a servo-motor and a ball screw mechanism, the ball screw mechanism comprises a screw shaft and a nut for use in converting rotation of the servo-motor into rectilinear motion. The control device comprises a pattern generator for generating a set pattern for the clamping force. The mold clamping system generates a clamping force according to the set pattern and a maximum clamping force with the set pattern being determined to be larger than the clamping force that is generated by the servo-motor within predetermined ratings.

REFERENCES:
patent: 5052908 (1991-10-01), Inaba et al.
patent: 5059365 (1991-10-01), Hertzer et al.
patent: 5149471 (1992-09-01), Catanzaro et al.
patent: 5164203 (1992-11-01), Tanaka et al.
patent: 5540577 (1996-07-01), Ishikawa et al.

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