Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Reexamination Certificate
2006-03-07
2006-03-07
Heitbrink, Jill L. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
C425S145000
Reexamination Certificate
active
07008574
ABSTRACT:
An electric injection molding machine capable of maintaining a quality of molded articles and capable of suppressing a variation of weight of articles molded by a mold having a plurality of cavities when transferring molding conditions in a hydraulic injection molding machine as they are to the electric injection molding machine. This electric injection molding machine has an electric injection mechanism for injecting a molding material into a mold by a drive force of an electric motor, an injection control unit and a servo driver for controlling the injection motor so as to follow the injection speed reference, and an reference compensation unit for compensating the injection speed reference based on the characteristics of the hydraulic drive system so that fluctuation characteristics of the injection speed with respect to the injection pressure when controlling the electric injection mechanism approximate the fluctuation characteristics of the injection speed with respect to the injection pressure in the hydraulic injection mechanism performing the injection of the molding material to the mold by the hydraulic drive system.
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Japanese Office Action for Application No. 2000-225952, dated Sep. 27, 2005, none English.
Iimura Yukio
Kanda Akira
Matsubayashi Haruyuki
Suzuki Masamitsu
Yamaguchi Yutaka
Heitbrink Jill L.
Pillsbury Winthrop Shaw & Pittman LLP
Toshiba Kikai Kabushiki Kaisha
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