Apparatus for conveying preforms

Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal... – With heating or cooling means

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Details

198377, 198415, 264535, 425534, B29C 4968

Patent

active

048569780

ABSTRACT:
An apparatus is provided for the conveyance of preforms through a heating station to a stretching and blowing machine during the production of hollow articles from thermoplastic plastics materials, means of which preforms having different neck diameters can be heated satisfactorily and extremely uniformly without major modification of the apparatus. This is achieved by providing two endless toothed sections extending parallel to each other and have preform pick-up means mounted thereon. The preforms are collected and retained in position by the pick-up means as they pass through the heating station. The mutual spacing of the belts and, hence, of the pick-up means from one another and from the heating devices is adjustable. A further pair of endless drive belts are provided which rotate the preforms at desired circumferential speed about their own axes as they pass through the heating device so as to promote an even distribution of the heat in the preforms.

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patent: 4530694 (1985-07-01), Kobler et al.

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