Method for controlling the heating of an extrusion device of a semi-finished product made of elastomeric material

摘要

In the manufacturing of a semi-finished product made of elastomeric material, a method for controlling the heating of an extrusion device which includes multiple structural units having respective different working temperatures and thermal inertias includes: a) setting, for all of the above-mentioned units a heating temperature to a value equal or close to the working temperature of the unit which has the lowest working temperature; b) simultaneously heating all of the above-mentioned units; c) when said unit is approaching or has reached the heating temperature, setting for the other units a new heating temperature to a value equal or close to that of the working temperature of the unit, the working temperature of which is closest to the heating temperature; and d) iteratively repeating the operations mentioned in b) and c), until all of the above-mentioned units have reached the respective working temperature.

主权项

1. A method for controlling the heating of an extrusion device of a semi-finished product made of elastomeric material, the extrusion device comprising a plurality of structural units, each structural unit having a working temperature different from the working temperature of at least one other structural unit and a thermal inertia different from the thermal inertia of at least one other structural unit, comprising:
a) setting, for each structural unit, a heating temperature to a value equal or close to the working temperature of the structural unit which has a lowest working temperature; b) simultaneously heating all structural units of said extrusion device; c) when the structural unit having the lowest working temperature is approaching or has reached said heating temperature, setting, for other structural units, a subsequent heating temperature to a value equal or close to the working temperature of the structural unit, among said other structural units, closest to the heating temperature previously set; d) simultaneously heating said other structural units of said extrusion device; and e) iteratively repeating the operations recited in c) and d), for only structural units having a working temperature greater than the heating temperature last set, until all of the structural units of the extrusion device have reached a respective working temperature.