Blow mold array, stretch blow molding machine and method
AssigneeKrones AG
InventorsRupert Meinzinger, Klaus Voth, Thomas Albrecht, Erik Blochmann, Martin Seger, Konrad Senn, Frank Winzinger, Matthias Wallner, Christian Stoiber, Harald Steinberger, Thomas Hoellriegl, Hans-Juergen Fleishmann
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Abstract
Disclosed is a method for molding plastic preforms into plastic containers using a blow mould assembly including a blow mould unit, wherein a part of the blow mould unit is retained on a blow mould holder element using negative pressure.
Claims16
A blow mould assembly for moulding plastic preforms into plastic containers, comprising a blow mould unit forming a cavity, within which the plastic preforms can be expanded into plastic containers, said blow mould unit being formed at least in two parts, and comprising a blow mould holder for receiving the blow mould unit, wherein the blow mould holder has at least two mould holder elements for receiving parts of the blow mould unit, and comprising a locking mechanism in order to arrest at least a part of the blow mould unit in relation to at least one mould holder element, said locking mechanism having an engagement member, which engagement member rests in an arrested condition of part of the blow mould unit in relation to a mould holder element on a section of part of the blow mould unit,
- wherein the locking mechanism has an actuating member which is displaceable in a z-direction in order to achieve an arrest of the blow mould unit relative to the blow mould holder, wherein the locking mechanism is actuated either electromagnetically or pneumatically.
A method for arresting at least a part of a blow mould unit in relation to a blow mould holder, which receives the blow mould unit, in a blow mould assembly for moulding plastic preforms into plastic containers,
- said method comprising the steps of:
- providing a blow mould assembly comprising a blow mould unit forming a cavity, within which the plastic preforms can be expanded into plastic containers, said blow mould unit being formed at least in two parts, and comprising a blow mould holder for receiving the blow mould unit, wherein the blow mould holder has at least two mould holder elements for receiving parts of the blow mould unit, and comprising a locking mechanism in order to arrest at least a part of the blow mould unit in relation to at least one mould holder element, said locking mechanism having an engagement member, which engagement member rests in an arrested condition of part of the blow mould unit in relation to a mould holder element on a section of part of the blow mould unit,
- wherein the locking mechanism has an actuating member which is displaceable in a z-direction in order to achieve an arrest of the blow mould unit relative to the blow mould holder, wherein the locking mechanism is actuated either electromagnetically or pneumatically;
- and
- retaining the blow mould unit on the blow mould holder with negative pressure.
Dependencies are inferred from the claim text.