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. 28, 2006
Filed:
Nov. 13, 2003
Naohiko Tsuzuki, Akashi, JP;
Hideaki Harada, Kariya, JP;
Hiromi Takagi, Kariya, JP;
Hitoshi Oosawa, Kariya, JP;
Naohiko Tsuzuki, Akashi, JP;
Hideaki Harada, Kariya, JP;
Hiromi Takagi, Kariya, JP;
Hitoshi Oosawa, Kariya, JP;
Toyo Machinery and Metal Co., Ltd., Hyogo-Prep, JP;
Denso Corporation, Aichi-Prep, JP;
Abstract
A diecasting machine capable of realizing highly precise injection of molten metal at high-speed without using an accumulator is provided, which includes: an injection cylinder for loading molten metal into a mold cavity by injection; a single two-way hydraulic pump driven by a driving motor for supplying hydraulic fluid to the injection cylinder in two directions; a hydraulic circuit for driving the injection cylinder by controlling supply of hydraulic fluid from the two-way hydraulic pump to the injection cylinder and discharge of hydraulic fluid from the injection cylinder which proceeds in accordance with movement of a piston of the injection cylinder; and a hydraulic controller for controlling rotational speed of the driving motor associated with the two-way hydraulic pump in injection/loading the molten metal and controlling torque of the driving motor in dwelling.