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US 4,102,626 AGranted
Apparatus for manipulating parisons in blow molding machines
AssigneeVoith-Fischer Kunststofftechnik GmbH & Co. KG
InventorHelmut Scharrenbroich
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AssigneeVoith-Fischer Kunststofftechnik GmbH & Co. KG
InventorHelmut Scharrenbroich
Estimating the term…
A tempering mold for parisons which are formed in a parison mold and are about to be introduced into a blow mold has a tubular section open at one end and a second section reciprocable in the other end of the tubular section. A parison which is carried by a blowing mandrel, which tapers in a direction toward the free end of the mandrel and whose smaller-diameter end is closed, is introduced into the tubular section by way of the open end so that its closed end engages and displaces the yieldably mounted second section before the conical surface of the parison comes into contact with the complementary internal surface of the tubular section. The latter is biased by helical springs so that it can yield to the parison by moving axially and/or by pivoting with respect to its support. At least one of the sections is heated and/or cooled by a fluid or in another suitable way to effect rapid and reproducible conditioning of successive parisons.
In a machine conversion of parisons into bottles or other hollow shaped articles wherein parisons are formed in a first mold at a parison forming station and wherein the parisons are transported from said forming station into a blow mold at a blowing station via a conditioning station, the improvement comprising a tempering mold at said conditioning station, said tempering mold including a tubular section having an open end for introduction of successive parisons, means for supporting said section at said conditioning station with freedom of axial movement with respect to said supporting means, and means for biasing said section to a predetermined axial position with respect to said supporting means so as to enable said section to yield against the opposition of said biasing means by moving substantially axially from said predetermined position in response to introduction of a parison by way of said open end;
Dependencies are inferred from the claim text.