Injection blow molding machine and process for the stretch blow molding of plastic containers
AssigneeKrones AG
InventorMartin Hintermeier
Life of this patent
Estimating the term…
Abstract
An injection blow molding machine having an injection molding rotor including a plurality of injection molding units with individual split mold cavities for preforms, a transfer rotor, a blow molding rotor including a plurality of blow molds, and a removal rotor, essentially within a shared operating plane, and split mobile neck molding parts which fit into each blow mold and each mold cavity and which are transferred with a preform and removed with a stretch-blown bottle from the blow mold. In the process, each preform is transferred in the neck molding part into the blow mold.
Claims28
An injection blow molding machine for plastic containers, comprising at least one injection molding rotor having a plurality of injection molding units which are suppliable with plasticized plastic material and which include individual, splited mold cavities for preforms, a transfer rotor equipped with controlled transfer elements and used for transferring the individual preforms to a blow molding rotor including a plurality of blow molds for stretch blow molding the plastic containers, a removal rotor equipped with controlled removal elements, the injection molding rotor, transfer rotor, blow molding rotor, and removal rotor being arranged in a substantially common operating plane, each mold cavity in the injection molding rotor being partly delimited by a split neck molding part which fits into each blow mold of the blow molding rotor, and wherein during use of the respective transfer element, a preform can, together with the neck molding part, be removed from a mold cavity substantially parallel to the operating plane and introduced in a blow mold, and use of a removal element, a container can, together with the neck molding part, be removed from the blow mold substantially parallel to the operating plane, and the neck molding part, which then no longer contains the container, can be reintroduced in a mold cavity.
A process for stretch blow molding plastic containers from preforms in a stretch blow molding machine, comprising successively forming individual preforms in an injection molding rotor by injection molding in mold cavities, transferring the preforms to a blow molding rotor having a plurality of blow molds, producing each preform in a split neck molding part of the mold cavity, transferring each perform in the neck molding part, and then, in the neck molding part, stretch blowing the perform into a container in the blow mold (11), and alternately introducing the neck molding part in a mold cavity and a blow mold.
Dependencies are inferred from the claim text.