Blowing Valve Device of a Blow-Moulding Device
AssigneeEugen Seitz AG
InventorsJoachim Schmidt, Mathias Fehlmann
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Abstract
In a method for monitoring a blow-moulding device for producing a hollow body, the blow-moulding device includes at least one process valve unit for feeding a process fluid into a preform of the hollow body under process pressure, wherein the process valve unit includes at least one electrically operated valve. During a blow-moulding process, at least one value of an electric current of the electrically operated valve is detected. The method and the device allow early recognition of an ageing process of the process valves, in particular their pilot valves, and/or the recognition of the status of valve properties.
Claims37
A method for monitoring a blow-moulding device for producing a hollow body, wherein the blow-moulding device has at least one process valve unit for feeding a process fluid into a preform of the hollow body under process pressure, and wherein the process valve unit has at least one electrically operated valve, wherein at least one value of an electric current of the electrically operated valve is detected during a blowing process.
A blowing valve assembly of a blow-moulding device for producing a hollow body, wherein the blowing valve assembly has at least one process valve unit for feeding a process fluid into a preform of the hollow body under process pressure, and wherein the process valve unit has at least one electrically operated valve, characterized in that a means for detecting an electric current value of the electrically operated valve during a blowing process is present.
A method for monitoring a blow-moulding unit of a plurality of blow-moulding stations for producing a hollow body,
- wherein each blow-moulding station has at least one process valve unit for feeding a process fluid into a preform of the hollow body under process pressure, and wherein the process valve unit has at least one valve,
- and wherein each blow-moulding station is associated with at least one sensor, wherein the method has at least the following steps:
- detecting at least one first sensor value in each blow-moulding station,
- transmitting a first data value, which is associated with the at least one detected first sensor value of each blow-moulding station, to a data processing unit, and
- determining a first statistical average of the transmitted first data values in the data processing unit.
A control system of a blow-moulding unit having a plurality of blow-moulding stations, wherein the blow-moulding unit has a central control unit and wherein each blow-moulding station is associated with at least one sensor,
- wherein the blow-moulding unit has at least one data processing unit,
- wherein the at least one data processing unit has evaluation means for forming a statistical average from data which are based on the sensor values obtained from the sensors, and wherein the blow-moulding unit has storage means for storing the determined statistical average as a setpoint.
Dependencies are inferred from the claim text.