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. 13, 2003
Filed:
Oct. 23, 2000
Kabushiki Kaisha Meiki Seisakusho, Nagoya, JP;
Abstract
A mold clamping apparatus including a moving device for moving a movable plate relative to a stationary plate. The moving device includes (a) a plurality of ballscrew shafts each of which extends from the stationary plate toward the movable plate, and each of which is supported at an axis end portion thereof by the stationary plate, so as to be rotatable relative to the stationary plate and so as not to be displaceable relative to the stationary plate in an axial direction thereof; (b) a plurality of servo motors which drive the respective ballscrew shafts, and which are disposed on one of opposite sides of the movable plate remote from the stationary plate, each of the servo motors having a rotor which is connected to the other axial end portion of the corresponding one of the ballscrew shafts such that the rotor and the corresponding ballscrew shaft are rotatable together; and (c) a plurality of ballscrew nuts which engage the respective ballscrew shafts and are fixed to the movable plate, so as to be moved in the axial direction with rotations of the respective ballscrew shafts, for thereby carrying the movable plate in the axial direction.