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:
Dec. 25, 2007
Filed:
Nov. 09, 2004
Junji Manabe, Yamaguchi-ken, JP;
Tsukasa Kato, Aichi-ken, JP;
Yoshiki Matsuura, Aichi-ken, JP;
Hidenori Uebayashi, Aichi-ken, JP;
Junji Manabe, Yamaguchi-ken, JP;
Tsukasa Kato, Aichi-ken, JP;
Yoshiki Matsuura, Aichi-ken, JP;
Hidenori Uebayashi, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A movable platen () capable of advance and retraction with respect to a fixed plate is provided with a tie bar connecting device () for meshing a split nut () with the multiple groove portion () of a tie bar (), and a mold clamping cylinder () operable with the split nut () serving as a reaction force point. The mold clamping cylinder () comprises a primary piston () contacting the split nut () and a secondary piston () movable relative to the primary piston (). It is arranged that the movable platen () is stopped just before the position at which the movable mold contacts the fixed mold, and in this state the split nut () is reliably meshed with the multiple groove portion (). Thereafter, the secondary piston () and primary piston () are moved integrally with respect to the movable platen () so as to effect mold contacting and mold clamping. After molding, the secondary piston () and the primary piston () are relatively moved to effect mold release.