INJECTION MOLDING SYSTEM, COMPUTER PROGRAM, METHOD OF INJECTION MOLDING, AND INJECTION MOLDING MACHINE

摘要

An injection molding system which enables the temperature of a mold to be precisely regulated even when there is a delay in increasing the mold temperature upon heat supply with a heating medium; a computer program; a method of injection molding; and an injection molding machine. During each injection molding cycle, after initiation of resin injection, the temperatures of a stationary mold half and a movable mold half are regulated so as to be kept between the upper limit (TU) and lower limit (TL) of a predetermined temperature region. This temperature control of the stationary mold half and movable mold half is conducted only by turning onor off a heating medium, without conducting cooling with a cooling medium or the like. In the course of resin cooling, the temperatures of the stationary mold half and movable mold half are regulated by supplying a cooling medium, stopping the supply, supplying the heating medium, and stopping the supply so that the temperatures thereof are kept between the upper limit (TUa) and lower limit (TLa) of a temperature region effective in annealing the resin.