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:
May. 06, 2014
Filed:
Nov. 05, 2009
Hideaki Tobita, Mishima, JP;
Harumichi Tokuyama, Odawara, JP;
Hideaki Tobita, Mishima, JP;
Harumichi Tokuyama, Odawara, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Abstract
A mold fastening device has a fixed die plate, a rear plate, a movable die plate that can move back and forth, a toggle mechanism, and a drive motor that drives a cross-head. The position where the cross-head should be stopped is associated with the rate at which to accelerate the cross-head from that position or the rate at which to decelerate the cross-head to that position. The cross-head is operated at an acceleration that corresponds to that position. The drive motor is thereby driven at a constant output torque, regardless of the position of the movable die plate. Further, the time for opening and closing metal molds can be shortened.