Plastic article or earthenware shaping or treating: apparatus – Diverse distinct type shaping means – Shaping orifice and either a downstream preform reshaping...
Patent
1974-03-21
1976-08-03
Hosar, Francis S.
Plastic article or earthenware shaping or treating: apparatus
Diverse distinct type shaping means
Shaping orifice and either a downstream preform reshaping...
425DIG215, 425DIG211, B29D 2303
Patent
active
039726690
ABSTRACT:
A mutli-stage blowmolding apparatus wherein a carriage is reciprocable between first and second positions and supports two open-and-shut molds which are operable independently of each other. In the first position of the carriage, one of the molds receives a parison which is being extruded from the nozzle of an extruder while the other of the molds receives a preform which is suspended on the blowing mandrel of a first blowing unit. The mandrel is withdrawn before the one mold closes around a freshly extruded parison and the carriage is immediately moved to the second position in which the parison in the cavity of the one mold is in register with the first blowing unit and can be expanded by the blowing mandrel to be thereby converted into a preform. At the same time, the preform in the other mold registers with the blowing mandrel of a second blowing unit which converts the preform into a bottle or another hollow shaped article. The molds are thereupon opened and the carriage is returned to the first position. The preform remains suspended on the mandrel of the first blowing unit and the shaped article remains suspended on the mandrel of the second blowing unit or is ejected from the other mold during movement of the carriage to its first position.
The carriage may support a discrete operating mechanism for each of the two molds, or such operating mechanism may include two platens for the sections of the two molds and springs or other biasing means for moving the sections of the other mold relative to the respective platens.
REFERENCES:
patent: 3396427 (1968-08-01), Raspante
patent: 3402431 (1968-09-01), Fogelberg et al.
patent: 3583031 (1971-06-01), Kader et al.
patent: 3767747 (1973-10-01), Uhlig
patent: 3781395 (1973-12-01), Uhlig
Bekum Maschinenfabriken GmbH
Hosar Francis S.
Safran David S.
Striker Michael J.
LandOfFree
Multi-stage blowmolding apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-stage blowmolding apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-stage blowmolding apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1926808