Glass Parison Forming Mold Eliminating Inversion
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Solution Overview
Problem
Conventional glass container manufacturing processes require significant equipment height and space due to the need for blank molds and parison inversion, leading to inefficiencies and potential weaknesses in container strength from blank seams.
Innovation Solution
A method and apparatus using a forming mold with a plunger to directly form a glass parison, eliminating the need for blank molds and parison inversion, allowing a blow mold to be positioned directly below the forming mold for blow molding, thereby reducing equipment height and improving container strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional blank molds and parison inversion are used, then the parison can be formed and transferred, but the equipment height and space requirements increase significantly
Solution Approach 1:
The patent combines the blank mold and blow mold into a single integrated forming mold assembly. The blank mold is positioned within the blow mold, allowing the parison to be formed and then blown without removal or inversion. This merging eliminates the need for separate equipment stations and reduces overall equipment height while maintaining full functionality.
Solution Approach 2:
Instead of inverting the parison after formation from the blank mold, the patent maintains the parison in its original upright position within the integrated mold assembly. The blow mold surrounds the parison from the outside without requiring inversion, thus eliminating the complex inversion mechanism and reducing equipment space requirements.
2Ease of manufacture
If blank molds are used to form the parison, then the parison can be created, but blank seams are introduced that weaken container strength
Solution Approach 1:
The patent extracts and eliminates the blank mold component from the traditional two-stage process. By using only a blow mold to form and inflate the parison in a single integrated operation, the blank seams that would normally be created by the blank mold are completely removed, resulting in stronger containers without compromising formation capability.
3Productivity
If parison inversion and transfer between molds are required, then the forming process can be completed, but the process complexity and potential for weakness increase
Solution Approach 1:
The patent merges the blank mold and blow mold operations into a single integrated forming mold assembly. The parison is formed and then blown within the same stationary mold structure, eliminating the need for complex transfer mechanisms, multiple mold handling operations, and associated mechanical complexity while maintaining full productivity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces equipment height, eliminates blank seams, and enhances container strength by forming the parison directly within the mold, allowing for more efficient and robust glass container production.
Implementation Method 1
supporting the molten glass in the forming mold at the open lower end thereof; and pressing the molten glass in the forming mold with a plunger to form a parison
Data Source
AI summary
A method and apparatus for forming a container parison and container are disclosed. The method of forming a container parison in accordance with one aspect of the disclosure includes receiving molten glass in a forming mold having an open upper end, an open lower end, a forming chamber between the open upper and lower ends; supporting the molten glass in the forming mold at the open lower end thereof; and pressing the molten glass in the forming mold with a plunger to form a parison suspended downwardly from the neck finish and out of the open lower end of the mold.