Patent ID: 7182590
Filing Date: 2007-02-27
Classification: B29C,B60C,F16H,Y10S

Abstract:
1. A toggle-type mold clamping mechanism for performing mold clamping by moving a movable platen of an injection molding machine, comprising: links pivotally connected by a pin and a first bushing fitted around the pin so as to be rotated to move the movable platen; and pre-pressure means for applying a pre-pressure between the pin and the first bushing in the same direction as that of a force acting between the pin and the first bushing in the mold clamping to thereby prevent change of a clearance between said pin and said first bushing, wherein said pre-pressure means comprises a second bushing fitted around the pin, a holding member for holding the second bushing, a bolt and a nut for connecting said holding member and a link to which the first bushing is fixed.