Compact post-mold cooling device and method for thermally condit

Details Compact post-mold cooling device and method for thermally condit Compact post-mold cooling device and method for thermally condit

1999-04-20

2000-10-31

Davis, Robert

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264237, 264537, 425526, 425532, 425534, 425547, B29C 4964

Patent

active

06139789&

ABSTRACT:
The present invention relates to a multi-stage, post-mold cooling method and apparatus used in conjunction with an injection molding machine having an aggressive cycle time and a high output. The apparatus of the present invention includes a thermal conditioning device/station with cooling tubes for keeping separate the preforms of each batch and effecting cooling of the molded preforms, several separated cooling levels for simultaneously cooling multiple batches of preforms, and internal devices for automatically transferring each batch of molded preforms from one cooling level to the next. In a preferred embodiment, the thermal aconditioning device/station is partially sealed to create a controlled temperature environment for conditioning the molded articles. In another embodiment, the thermal conditioning device/station includes a level for re-heating the preforms.

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patent: 5772951 (1998-06-01), Coxhead et al.

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