Glass-forming machine

摘要

A bottle making machine includes: a plurality of molds ( 2 ) for forming bottles; and cooling mechanisms ( 6 ) respectively provided for the molds. Each cooling mechanism ( 6 ) is used for exposing a corresponding mold ( 2 ) to a cooling wind to individually control a temperature of the mold ( 2 ) and includes a temperature sensor ( 3 ) for individually detecting the temperature of the mold ( 2 ) and a valve mechanism ( 8 ) for opening and closing a cooling wind path ( 7 ) that directs the cooling wind to the mold ( 2 ). An opening and closing operation of the valve mechanism ( 8 ) of each cooling mechanism ( 6 ) is controlled in accordance with a switching signal from a temperature control device 5 . The temperature control device ( 5 ) fetches the temperature of the mold ( 2 ) detected by the temperature sensor ( 3 ) of each cooling mechanism ( 6 ) via a temperature indicator panel ( 4 ) at a constant interval and accumulates it in a memory. Moreover, the temperature control device ( 5 ) determines an operation amount of the valve mechanism ( 8 ) by PID control using accumulated temperature data and a target temperature.