Patent ID: 7458796

Claim:
A mold clamping apparatus of an injection molding machine comprising: a fixed platen to which a fixed-side mold is attached; a mold clamping housing; at least one tie bar provided between the fixed platen and the mold clamping housing; a movable platen to which a moving-side mold is attached and which is capable of moving with respect to the fixed platen along the tie bar; a heater for heating the tie bar; a sensor for sensing a temperature of a portion heated by the heater, the heater and the sensor being provided to each tie bar; a measuring device that measures a substrate thickness of a periphery of a product injected and molded in the mold; and a temperature adjustor, which is connected to the heater and the sensor and controls the temperature of the heated portion of the tie bar based on the measured substrate thickness.