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:
Sep. 18, 2000
Filed:
Mar. 25, 1998
Applicant:
Inventor:
Michiaki Takizawa, Nagano, JP;
Assignee:
Nissei Plastic Industrial Co., Ltd., Nagano-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264 401 ; 264 405 ; 2643281 ; 425135 ;
Abstract
In a method of controlling an accumulator connected to an oil hydraulic circuit of an injection molding machine, a charge start point and a charge end point for the accumulator are set for each of molding cycles or for each of step divisions constituting a single molding cycle. During molding, control is performed such that the charge start point and the charge end point are synchronized with each molding cycle. Thus, pressures in the respective steps of each molding cycle become constant (stable) among molding cycles.