The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2011
Filed:
Apr. 16, 2009
Takashi Hakoda, Nagano-ken, JP;
Isamu Komamura, Nagano-ken, JP;
Toshimi Kato, Nagano-ken, JP;
Kiyoshi Nakamura, Nagano-ken, JP;
Takashi Hakoda, Nagano-ken, JP;
Isamu Komamura, Nagano-ken, JP;
Toshimi Kato, Nagano-ken, JP;
Kiyoshi Nakamura, Nagano-ken, JP;
Nissei Plastic Industrial Co., Ltd., Nagano-Ken, JP;
Abstract
In a hydraulic drive device () for an injection molding machine (M) that has a pressure control valve (Vs) incorporating a pressure sensor () for detecting a hydraulic pressure and a feedback control circuit (Cs) for controlling the hydraulic pressure by feedback based on a pressure detection value (Spd) obtained from the pressure sensor () and a pressure instruction value (Spc) fed from a molding machine controller (), the molding machine controller () includes a second feedback control circuit (Cm) for correcting the pressure instruction value (Spc) that is fed to the pressure control valve (Vs) based on the pressure detection value (Spd) fed from the pressure control valve (Vs) and the pressure instruction value (Spci) obtained from the interior of the molding machine controller ().