Mold clamping mechanism of injection molding machine

Abstract

A fall-prevention leg portion is provided projecting rearward from the central bottom portion of a stationary platen. This leg portion is formed with a pin hole, which receives a pivot pin that fixes the stationary platen for angular motion around a vertical axis, and bolt holes, which receive tilt adjusting bolts for adjusting a longitudinal tilt of a mold mounting surface of the stationary platen with respect to the vertical axis. The parallelism between the stationary platen and the movable platen can be easily adjusted by regulating the angular motion of the stationary platen around the pivot pin and the longitudinal tilt of the stationary platen by the adjusting bolts.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects and features of the present invention will be obvious from the ensuing description of embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a perspective view of a stationary platen of one embodiment of a mold clamping mechanism of an injection molding machine according to the present invention;

FIG. 2 is a top view of the mold clamping mechanism including the stationary platen of FIG. 1, mainly showing the stationary platen; and

FIG. 3 is a side view of the mold clamping mechanism of FIG. 2.

Claims

1. A mold clamping mechanism of an injection molding machine, which comprises a stationary platen mounted on a base frame of the injection molding machine, a linear guide, and a movable platen placed on the linear guide, the movable platen being configured to move toward or away from the stationary platen along the linear guide, wherein said stationary platen comprises angle adjusting means configured to rotate the stationary platen around a vertical axis.

2. The mold clamping mechanism according to claim 1, wherein the angle adjusting means includes coupling means for coupling the stationary platen to the base frame so that the stationary platen can rotate around the vertical axis and fixing means for fixing the stationary platen to the base frame.

3. The mold clamping mechanism according to claim 2, wherein the coupling means includes a pin and a pin hole in a bottom portion of the stationary platen.

4. The mold clamping mechanism according to claim 1, wherein the stationary platen is provided with tilt adjusting means for adjusting a tilt of the mold mounting surface of the stationary platen with respect to the vertical axis.

5. The mold clamping mechanism according to claim 4, wherein the tilt adjusting means is a bolt.