Patent ID: 7134870

Claim:
A mold clamping mechanism of a molding machine, which has a fixed platen mounted on a base frame of the molding machine, a rear platen, tie bars permitting said fixed platen to be connected to said rear platen, and a movable platen placed between said rear platen and said fixed platen, and is adapted to effect clamping of molds mounted to said movable platen and said fixed platen by moving the movable platen along said tie bars, wherein, said mold clamping mechanism has at least two pieces of movable platen guides, separate from said tie bars; said movable platen has movable platen guide insertion holes into which said movable platen guides are inserted; each of said movable platen guides having a sliding part in the form of a ball spline shaft; ball spline nuts are provided in said movable platen guide insertion holes of said movable platen; and wherein the mold clamping mechanism further has a guide support between said rear platen and said movable platen, said guide support being adapted to support said movable platen guides in an inserted condition.