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:
Mar. 03, 1998
Filed:
Apr. 17, 1996
Shigeru Fujita, Shizuoka, JP;
Susumu Harada, Shizuoka, JP;
Toshiba Machine Co., Ltd., Tokyo, JP;
Abstract
A method for controlling the injection speed of injection molding machines and an apparatus therefor in which a driving force for forwardly moving an injection plunger movably inserted in an injection cylinder is detected by a first detector; when the value PA detected by the detector exceeds a standard value PSH, the forwardly moving speed of the plunger is controlled to be reduced in accordance with a moving speed reduction control profile VD which is determined by a predetermined decreasing function: further, the forwardly moving speed of the plunger at the dwelling phase switching position is detected by the second detector; the judgment that the value VS detected by the second detector exceeds the upper limit VAH and/or the judgment that the value VS exceeds the lower limit VAL is/are conducted; an alarm signal is outputted when the value VS exceeds the upper limit and/or the value VS exceeds the lower limit.