METHOD FOR ADJUSTING COMPRESSION STROKE ALLOWANCE OF VERTICAL INJECTION-COMPRESSION MOLDING MACHINE

摘要

FP-1091-02 < > Described herein is a method for adjusting the compression stroke allowance of a vertical injection-compression molding machine including a slide plate mounting thereon a mold clamp cylinder and an upper mold in opposition to a lower mold on a machine bed, and a lift cylinder for moving the slide plate up and down along tie bars, the method comprising the steps of: downwardly extending a piston rod of a hydraulic cylinder on the slide plate to stroke end; upwardly extending a piston rod of an air cylinder on the part of the bed, with the upper and lower molds in contact with each other, until a micrometer at the upper end of the air cylinder piston rod is abutted against the lower end of the hydraulic cylinder piston rod; fixing the air cylinder piston rod in this state; upwardly retracting the hydraulic cylinder piston rod; setting the micrometer at a desired compression stroke allowance; lowering the hydraulic cylinder piston rod to stroke end; and lifting the slide plate to proceed to an injection-compression molding operation.