Split Mold Cooling Control for Glass Forming Defects
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Solution Overview
Problem
Temperature differences between split molds in glass product forming machines lead to defects such as deformation and cracks in glass products, due to uneven cooling and molten glass temperature variations, resulting in non-uniform sizes and shapes.
Innovation Solution
A glass product forming machine with a mold cooling device that includes temperature detection means and valve mechanisms to individually control cooling air flow to each split mold, ensuring consistent temperature across the molds, thereby preventing temperature differences and defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling air is applied to molds to control temperature, then mold temperature can be maintained at target value, but temperature differences between split molds occur causing product defects
Solution Approach 1:
The cooling system is divided into independent cooling circuits for each split mold, allowing separate temperature control. Each split mold has its own cooling air supply path with individual valve mechanisms, enabling independent adjustment of cooling air volume to eliminate temperature differences between split molds.
Solution Approach 2:
Temperature control is localized to each split mold through individual cooling air supply paths. The system applies different cooling air volumes to different split molds based on their specific temperature conditions, achieving uniform temperature distribution across all molds while maintaining overall temperature at target value.
2Manufacturing precision
If individual cooling control for each split mold is implemented, then temperature uniformity improves, but device complexity increases
Solution Approach 1:
The valve mechanisms serve dual functions: they individually control cooling air flow to each split mold for temperature uniformity, and collectively contribute to maintaining overall mold temperature at the target value. This multi-functionality reduces the need for additional separate control systems.
Solution Approach 2:
Temperature sensors detect temperatures of individual split molds and feed this information back to the control system. The control system automatically adjusts valve mechanisms based on detected temperature differences, eliminating the need for manual adjustment and reducing operational complexity while maintaining temperature uniformity.
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 effectively prevents temperature differences between split molds, reducing defects like deformation and cracks, and ensuring uniformity in product size and shape by adjusting cooling air volumes based on detected temperature values.
Implementation Method 1
cooling mechanisms provided to the respective split molds, the cooling mechanisms each individually applying cooling air to each of the split molds of the mold
Data Source
Figure 1
Figure 2
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AI summary
In a glass product forming machine having molds 1A and 1B each composed of a pair of split molds 11 and 12, and a mold cooling device X for cooling the molds 1A and 1B to control the temperatures thereof, in order to prevent the occurrence of a defect such as deformation or cracks in a formed article due to a temperature difference between the split molds 11 and 12, the mold cooling device X is configured to include: cooling mechanisms 3R and 3L provided to the respective split molds, the cooling mechanisms each individually applying cooling air to each of the split molds 11 and 12 of the molds 1A and 1B; valve mechanisms 30R and 30L for individually opening and closing each of paths for introducing cooling air to the respective cooling mechanisms 3R and 3L; temperature detection means for detecting the temperature of at least one of the split molds; and a temperature control device 9 for generating and outputting control signals for controlling the opening and closing operations of the respective valve mechanisms 30R and 30L on the basis of the detected temperature value by the temperature detection means.