Patent ID: 6527536
Filing Date: 2003-03-04
Classification: B29C

Abstract:
A toggle type vertical molding machine comprising:a fixed plate on a base, a pressure-receiving plate spaced above the fixed plate, four tie bars interconnecting the fixed plate and the pressure-receiving plate at four corners thereof; a movable platen having an oblong shape and being positioned between the fixed plate and the pressure-receiving plate and movable along the tie-bars; a mold-clamping device having toggle mechanisms for mold-clamping positioned between pressure-receiving plate and the movable platen, wherein one end of each of the tie-bars is secured to the fixed plate and the other end of each of the tie-bare is formed into threaded shafts, adjusting nuts cooperating with the threaded shafts of the tie-bars for clamping and fixing the tie-bars to the pressure-receiving plate, the adjusting nuts being positioned on an outer surface of the pressure-receiving plate and each adjusting nut having a first toothed wheel of a first predetermined diameter secured thereto; a central toothed wheel of a second predetermined diameter centrally positioned on the outer surface of the pressure-receiving plate; and a pair of intermediate toothed wheels of a third predetermined diameter positioned on the outer surface of the pressure-receiving plate, each intermediate toothed wheel being positioned intermediate and engaging the central toothed wheel and a pair of said first toothed wheels, a toothed wheel-driving motor positioned on a side of the pressure-receiving plate for driving the central toothed wheel to thereby rotate each intermediate toothed wheel which rotates a respective pair of first toothed wheels at the same time, wherein the first diameter is less than the third diameter and the third diameter is less than the second diameter, and wherein the second diameter of the central toothed wheel is approximately equal to the breadth of the plate body of the pressure-receiving plate.