Apparatus for blow molding plastic container

Details Apparatus for blow molding plastic container Apparatus for blow molding plastic container

1976-03-15

1977-08-23

Lazarus, Richard B.

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

Including means to prepare parison

425 53D, 425534, A01J 2100

Patent

active

040437345

ABSTRACT:
A method and apparatus for blow molding plastic articles, particularly containers. The method involves shuttling a pre-form blow mold between a parison forming location and a pre-form blowing location, and the transfer of a blown pre-form to a fixed final blow mold. The movement of the pre-form blow mold, both in its shuttling movement and in its open and closing movement, is utilized to transfer the blown pre-form. A clamp arm is secured to each pre-form mold section for engaging the pre-form at the pre-form blowing location and for transferring the pre-form to the final blow mold as the pre-form blow mold moves.
In the use of the method and apparatus for the forming of containers, the clamp arms form the finish-defining portions of the final blow mold. When the pre-form blow mold is at its blowing location, the clamp arms register with the mold cavity of the fixed final blow mold to define the complete final article mold.
If desired, the blown pre-form can be axially stretched during its transfer from the pre-form blowing location to the final blowing location and as the pre-form is retained by the clamp arms.

REFERENCES:
patent: 3718724 (1973-02-01), Holzmann et al.
patent: 3767747 (1973-10-01), Uhlig
patent: 3781395 (1973-12-01), Uhlig

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