Method and Apparatus for Controlling the Blowing Air and Cooling Air of an I.S. Glassware Forming Machine

摘要

In order to achieve reproducible operating parameters of the shaping process of an I.S. glassware forming machine, a central control of all blowing and cooling air flows is proposed, in which in accordance with sections a volume flow of the cooling air including the inlet-side and outlet-side temperatures thereof are measured by means of a measuring device (51, 52) and a heat loss which is associated with the section is ascertained. The heat thus removed in sections is compared with standard values, wherein in the event that tolerance zones are exceeded a variation of the volume flow is initiated by the actuation of restrictors (53, 54). All of the sections of the glassware forming machine which are intended for passage of cooling air are monitored in this way, namely on the basis of a determinable heat loss, so that uniform cooling conditions, which are adapted to a mathematical model, and in this respect a reproducible product quality are achieved.

主权项

1. Method for controlling the blowing and/or cooling air flows of an I.S. glassware forming machine consisting at least of an air passage for the blowing and/or cooling air of a parison mold (1) and a blow mold (60) and air passages for the cooling air at least of the parison mold (1) and blow mold (60), wherein starting from a compressed air source, air flows are supplied at least to the parison mold (1) and the blow mold (60) in accordance with their intended purpose via different lines (12, 37, 48, 49, 64, 73, 80, 87, 105), characterized in that each cooling air flow is controlled on the basis of a volume flow of the cooling air, which passes through the cooling section of the glassware forming machine, in conjunction with the temperatures of the cooling air measured on the inlet side and outlet side in relation to the section, wherein the heat loss relating to the section is measured and wherein the volume flow is varied in accordance with a comparison of this loss with desired values.