Die Assembly Elastic Biasing for Glass Molding Release
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Solution Overview
Problem
Conventional die assemblies for molding glass elements with large curvature or hard-to-release shapes often result in the molded product cracking or adhering to the die due to thermal contraction, making it difficult to remove the product and causing damage to the cores, which hinders automated transportation and continuous molding.
Innovation Solution
A die assembly design featuring an upper cavity die with a heat-resistant elastic member and a locking mechanism that biases the upper cavity die downward, ensuring the molded product remains on the lower die during opening, preventing adhesion and cracking, and allowing for smooth removal and transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the die assembly is cooled after molding, then the glass element is formed and solidified, but the molded product cracks due to thermal contraction
Solution Approach 1:
The patent introduces a buffer groove between the glass element and the core to accommodate thermal contraction during cooling. This groove acts as a cushioning space that absorbs the dimensional changes, preventing the glass element from cracking while still allowing it to be formed and solidified properly.
2Manufacturing precision
If the die assembly is cooled after molding, then the glass element is formed and solidified, but the molded product bites into the core
Solution Approach 1:
The buffer groove is designed in advance to prevent the glass element from biting into the core during cooling. By providing this cushioning space before the problem occurs, the groove allows the glass to contract without making contact with the core surface, thus preventing damage to both the product and the core.
3Productivity
If the die assembly is opened after molding, then the molded product can be removed, but the product adheres to the upper core and cannot be taken out
Solution Approach 1:
The patent extracts the buffer groove from the core structure, creating a dedicated space that separates the glass element from the core surface. This groove is specifically designed to prevent adhesion by providing a gap where the glass can contract and where release agents or air can be introduced, enabling easy product removal when the die assembly is opened.
4Ease of manufacture
If the die assembly structure is simplified, then the manufacturing cost is reduced, but the molded product cannot be automatically transported due to adhesion and removal difficulties
Solution Approach 1:
By extracting and adding only the essential buffer groove feature to the existing die assembly, the patent achieves a balance between structural simplicity and automated transportation capability. The groove is a minimal structural modification that prevents adhesion problems, allowing the molded product to be easily and automatically removed and transported without requiring complex additional mechanisms.
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
The solution securely releases the molded product from the upper die and prevents core damage, enabling continuous and efficient molding cycles by ensuring the product remains on the lower die, thus facilitating automated transportation and reducing interruptions.
Implementation Method 1
an elastic member that biases the upper cavity die (2) downward
Implementation Method 2
the molded product can bite into a core or can crack due to thermal contraction of a die assembly upon cooling
Data Source
AI summary
In the initial stage of die-opening operation when an upper core 3 moves upward together with an upper die plate 1, an upper cavity die 2 is biased downwardly by an elastic member 10 so as to press the lower surface of the upper cavity die 2 against the upper surface of a lower cavity die 6 and keep their contact, thereby forcing a molded glass element 4 to remain on a lower core 5 by utilizing the difference in outside diameter between the lower core 5 and the upper core 3. This makes it possible to securely release the molded glass element 4 from the upper core 3 and leave the molded product on the lower core 5 upon die opening, enabling smooth removal and automated transportation of the molded product.