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:
Dec. 04, 2001
Filed:
Jun. 04, 1999
Kiyoshi Sasaki, Mishima, JP;
Fumiyuki Kato, Nagaizumi-cho, JP;
Tsuginobu Totani, Numazu, JP;
Fukio Iimura, Shimizu-cho, JP;
Jun Koike, Shimizu-cho, JP;
Masahiro Tamaki, Susono, JP;
Yutaka Yamaguchi, Kannami-cho, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo-To, JP;
Abstract
An injection speed control procedure is applied to controlling an injection screw included in an electric injection molding machine and driven by an electric motor. An injection process is divided into a plurality of injection stages. Injection speed at which the injection screw is moved is changed at a time point when a value PS obtained by integrating injection pressure with respect to the position of the injection screw or a value PT obtained by integrating injection pressure with respect to injection time coincides with a predetermined reference value determined for each injection stage.