Patent ID: 9724862
Date: 2017-08-08
CPC Classifications: B29C

Claim:
1. A mold clamping apparatus comprising: a base; a fixed platen fixedly mounted on the base and supporting a fixed mold; a mold clamping cylinder disposed parallel to the fixed platen and horizontally movably supported on the base, the mold clamping cylinder having a piston rod extending toward the fixed mold; a movable platen disposed between the fixed platen and the mold clamping cylinder and connected to the piston rod in such a manner as to be horizontally movably supported, the movable platen supporting a movable mold; tie bars extending horizontally from the fixed platen and penetrating the movable platen and the mold clamping cylinder; a connecting mechanism arbitrarily connecting the mold clamping cylinder or the fixed platen to the tie bars; and a mold opening/closing actuator for moving the mold clamping cylinder or the movable platen, wherein a mold thickness adjustment cylinder is provided between the mold clamping cylinder and the movable platen, the mold thickness adjustment cylinder being configured to change a position of the movable platen with respect to the mold clamping cylinder when the fixed mold and the movable mold are replaced and to generate a predetermined mold opening force in an initial stage of a mold opening process, and wherein an axial force in a contracting direction of the mold thickness adjustment cylinder is set to be larger than an axial force in an expanding direction of the mold opening/closing actuator and smaller than an axial force in a contracting direction of the mold clamping cylinder.