Method of adjusting effective length of tie bars in a mold clamping apparatus of an injection molding machine

摘要

A mold clamping apparatus (1) of an injection molding machine, which includes a fixed platen (6) to which a fixed-side mold (6a) is attached, a mold clamping housing (8), a plurality of tie bars (2A-2D) provided between the fixed platen (6) and the mold clamping housing (8) and a movable platen (7) to which a moving-side mold (7a) is attached and which is capable of moving with respect to the fixed platen (6) along the tie bars (2A-2D). The mold clamping apparatus includes heaters (3A-3D) for heating the tie bars (2A-2D) and sensors (4A-4D) for sensing the temperatures of portions heated by the heaters (3A-3D), and the heaters and the sensors are provided to each of the plurality of tie bars. The mold clamping apparatus includes a temperature adjustor (5), which is connected to the heaters (3A-3D) and the sensors (4A-4D) and controls the temperatures of the heated portions of the tie bars (2A-2D).