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. 24, 2009
Filed:
Aug. 24, 2006
Makoto Tsuji, Kanagawa, JP;
Saburo Noda, Kanagawa, JP;
Makoto Tsuji, Kanagawa, JP;
Saburo Noda, Kanagawa, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo, JP;
Abstract
A clamping system provided with a fixed die plate, a movable die plate, a plurality of tie bars, half nuts able to be coupled with or release coupled parts of a plurality of tie bars, clamping cylinders accommodating pistons of a plurality of tie bars, position sensors detecting positions of pistons, a plurality of direction control valves connected to a plurality of clamping cylinders, and a control unit controlling the plurality of direction control valves so that a difference of movement amounts of pistons among the plurality of tie bars from the time of die contact to the time of the completion of clamping becomes within a predetermined permissible value based on detection results of the position sensors.