Patent · US Active

Volume controlled blowing-air feed

US10857717B2 · kind B2 · utility

1Cited by

5References

4Claims

0Family size

Assignee

KHS CORPOPLAST GMBH · DE

Inventors

Michael Litzenberg · Geesthacht, DE
Karl-Heinz Balkau · Oststeinbek, DE
Dieter Klatt · Wülfrath, DE
Michael Linke · Hamburg, DE

Key dates

Filing date	Sep 28, 2018
Grant date	Dec 8, 2020
Priority date	—
Expiry date	Apr 30, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/7158
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A device for controlling a blow-molding machine for producing a thermoplastic container, wherein a blowing gas for blow-molding the container is introduced into a thermally conditioned preform, while the preform is held in a blow mold of the blow-molding machine. The blowing gas is introduced during a preblowing phase into the preform so that the temperature-conditioned material of the preform approaches the walls of the blow mold. The blowing gas is introduced during a following finish-blowing phase into the preform so that the temperature-conditioned material of the preform is pressed into the contours of the blow mold walls. The volumetric flow rate of the blowing gas is determined at least during the preblowing phase by an adjustable flow-control valve that can be controlled by a control unit that generates a control signal for adjusting the flow-control valve. The flow-control valve is adjusted as a function of the control signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.