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:
Apr. 17, 1990
Filed:
Jan. 25, 1989
Applicant:
Inventors:
Susumu Harada, Mishima, JP;
Hideo Tanaka, Mishima, JP;
Assignee:
Toshiba Machine Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264 405 ; 26432811 ; 425149 ; 425150 ; 425590 ;
Abstract
A method and apparatus controlling an injection molding machine having a compression process. The velocity is controlled using a closed loop single or multi-step programmed velocity control method or a closed loop multi-step programmed slope velocity control method. Pressure may be controlled using a multi-step programmed pressure control method in which a pressure signal is detected from a detector set in the mold die or set in the clamping cylinder. The method of the present invention improves the accuracy and density of articles molded.