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:
Feb. 16, 1999
Filed:
Mar. 22, 1996
Shigeru Fujita, Shizuoka, JP;
Susumu Harada, Shizuoka, JP;
Toshiba Machine, Co., Ltd., Tokyo, JP;
Abstract
A method for setting up a program profile in the control of the injection speed of injection molding machines where a model shape of an article to be molded is divided into fine elements; the filling up state of melt resin for each fine element is obtained as a time period by using numerical analyzing methods including the finite element method, the boundary element method, the calculus of finite differences method and the FAN method under a condition that the moving speed of the injection plunger is constant; a time period required for filling the model shape of the article as a whole with melt resin is divided into a plurality of material filling up time periods by an arbitrary number; a mean discharge speed Cv1 to Cvn of melt material at every divided period is calculated; and a moving speed of the injection plunger Pv1 to Pvn at every divided period is set up as a function of the mean discharge speed Cv2 to Cvn.