Abstract: A mold temperature control unit with which piping connection for supply and drain of cooling water in unit setup can be extremely simply made. In a mold temperature control unit 1 which unit body 2 comprises a plurality of cooling water systems performing supply and drain of cooling water to/from a plurality of elements to be cooled in a mold, a single cooling water supply port 11 and a single cooling water drain port 12 for said plurality of cooling water systems are disposed on the outer panel of the unit body 2.

Abstract: A colored plastics molding device can perform automatic calibration, and thus colorant can be charged, being free from wrong calculation and error, and therefore, high-quality colored plastics molded items can be obtained.

Abstract: A colored resin molder having a cylindrical input member, a resin material supply mechanism for storing a molding resin material having thermoplastic properties and supplying the stored resin material through the input member, a coloring agent supply device having a nozzle discharge end disposed in the input member for supplying a liquid coloring agent, a feeding mechanism for feeding the resin material from the resin material supply mechanism while mixing the coloring agent with the resin material for resin molding, a sensor device for detecting the status of the feeding by the feeding mechanism, and a control unit for controlling the operation of the coloring agent supply device according to the result of the detection by the sensor device.