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US 5,683,729 AGranted
Apparatus for making containers by blow moulding plastic parisons
AssigneeSidel
InventorThierry Valles
Life of this patent
Estimating the term…
Abstract
A machine manufactures containers such as bottles, pots, or other hollow bodies by thermal conditioning and blow molding of plastic preforms. The machine has two portfolio molds on the periphery of a carousel, and each has at least two molding cavities. The machine also has a device for steering and for holding the preforms on a path between thermal conditioners. The preforms are separated at a pitch that is less than that of the molding cavities. The machine features a device for changing the pitch of the preforms between the steering device and the mold.
Claims23
A machine for the production of containers by blow-molding preforms, comprising:
- at least two portfolio molds arranged on the circumference of a blow-molding rotating conveyor, wherein each of the molds comprises at least two molding cavities whose longitudinal axes are spaced apart by a first distance,
- a drive device transporting and holding the preforms on a path along which heat-processing means are positioned, wherein two successive preforms have, between their respective longitudinal axes, a first spacing smaller than said first distance,
- a spacing modifying device receiving said two successive preforms and positioning said two successive preforms to have, between said respective longitudinal axes, a second spacing substantially the same as said first distance, and
- means for transferring said two successive preforms to said at least two molding cavities.
1 more element
Dependencies are inferred from the claim text.