Staged Cooling Channel Cross-Section for Compression Molding
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Solution Overview
Problem
Conventional compression molding processes face limitations in achieving high-speed operation and efficient heat transfer, leading to reduced production rates and uneven thermal profiles within the mold.
Innovation Solution
A compression molding assembly featuring a coolant flow path with multiple stages of varying cross-sectional areas, including a bubbler, center core, cooling ring, and thread core, which directs fluid coolant through internal, traversing, and external channels to enhance heat transfer and uniform thermal profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling channels are used in compression molding, then the mold can be actively cooled for high speed operation, but the thermal profiles remain uneven with local hotspots
Solution Approach 1:
The cooling system is segmented into multiple stages with progressively smaller cross-sectional areas, creating distinct cooling zones that address different thermal requirements of the mold cavity. This segmentation allows targeted cooling of specific areas to eliminate hotspots while maintaining overall thermal uniformity.
Solution Approach 2:
Each stage of the cooling channel is designed with specific cross-sectional dimensions tailored to the local thermal requirements of different mold regions. The varying cross-sectional areas create locally optimized cooling conditions, with larger areas for regions requiring more cooling and smaller areas for regions needing less cooling, thereby achieving uniform thermal profiles.
2Temperature
If high coolant flow rates are used to achieve uniform cooling, then thermal profiles improve, but production rates decrease due to longer cooling cycles
Solution Approach 1:
The cooling channel cross-sectional area parameter is progressively changed across multiple stages, creating an optimized flow path that enhances cooling efficiency without requiring excessive coolant flow rates. This parameter variation allows effective heat removal while maintaining reasonable cooling cycle times.
Solution Approach 2:
The cooling system transitions from a single-dimensional channel to a multi-dimensional staged structure with varying cross-sections. This dimensional complexity allows the coolant to interact with different thermal zones of the mold, improving overall cooling efficiency and reducing the time required to achieve uniform thermal profiles.
3Device complexity
If simple cooling channels are used, then device complexity is low, but heat transfer efficiency is insufficient for high-volume molding
Solution Approach 1:
The cooling system is divided into multiple discrete stages with progressively varying cross-sectional areas. This segmentation creates a more complex but highly efficient heat transfer path that addresses the limitations of simple single-channel cooling, enabling effective heat removal for high-volume molding operations.
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 configuration enables increased cycling speed and efficiency, allowing for higher production rates with lower coolant flow rates and more uniform thermal profiles, preventing local hotspots during high-volume molding operations.
Implementation Method 1
a fluid coolant may flow through the bubbler input, the plurality of center core inlets, a plurality of internal channels bounded by the plurality of internal grooves and the center core, the plurality of traversing channels, a plurality of arcuate channels bounded by the plurality of arcuate grooves and the thread core, a plurality of external grooves of the cooling ring, the plurality of center core outlets, and the bubbler outlet
Data Source
AI summary
Various embodiments provide methods and apparatus for cooling a mold in a compression molding assembly, thereby enabling increased cycling speed and efficiency. Embodiments include a coolant flow path that transports a fluid coolant into and out of a cooling ring around the molding assembly's core. The coolant flow path may divide into several channels within the cooling ring. The coolant flow path may also include a series of stages with varying volumes or cross sectional areas designed to regulate the flow of coolant.