Blow mold shell and shell holder assembly for blow-molding machine
US6447281B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1999 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Sep 10, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7158
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A blow mold assembly is provided that comprises a blow mold shell, a mold holder and a mold holding assembly. The blow mold shell having a first annular groove disposed within the lengthwise exterior surface of the shell. The first annular groove serves as a mating surface for a support harness that positions the mold shell within the blow mold assembly. Additionally, the blow mold shell may comprise a shoulder insert that may include an independent cooling channel. The blow mold assembly comprises a mold holder that includes arcuate interior surfaces and arcuate exterior surfaces so as to create a concentric blow mold holder. The mold holder may comprise a pressure compensation element that is capable of compensating for the pressure build-up within the mold shell during the blow mold process. The blow mold assembly also comprises a blow molding holding assembly that comprises clamping brackets having arcuate inner surfaces for mating with the arcuate exterior surfaces of the mold holder or mold shell. The clamping brackets are pivotally driven by a cam apparatus within a blow-molding machine and serve to open and close the blow mold assembly as warranted by the fabrication proces…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.