Hot Press Mold Groove Layout for Uniform Quenching Cooling
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Solution Overview
Problem
Existing hot press machines face challenges in uniformly cooling metal workpieces due to the formation of large numbers of refrigerant ejection and discharge ports, which increases processing complexity and can lead to refrigerant stagnation and non-uniform cooling.
Innovation Solution
The implementation of three or more independent refrigerant guide grooves that extend from a single refrigerant ejection port without branching or merging, allowing the refrigerant to flow smoothly across a wide range of the press-molding surface, reducing stagnation and ensuring uniform cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a large number of independent refrigerant guide grooves are formed in the press-molding surface, then uniform cooling of the workpiece is achieved, but the number of refrigerant ejection and discharge ports increases, leading to increased processing complexity and reduced mold strength
Solution Approach 1:
The patent divides a single refrigerant guide groove into multiple independent segments (first, second, third refrigerant guide grooves) that extend from the refrigerant ejection port to different regions of the press-molding surface. Each segment independently guides refrigerant flow to specific areas, enabling uniform cooling coverage without requiring multiple ejection ports. This segmentation resolves the contradiction by achieving comprehensive cooling coverage through groove division rather than port multiplication.
2Area of stationary object
If refrigerant guide grooves are curved to expand the cooling range, then more workpiece area is cooled, but the flow resistance of the refrigerant increases and stagnation occurs, reducing cooling uniformity
Solution Approach 1:
The patent employs curved refrigerant guide grooves with optimized radii of curvature to expand cooling coverage while maintaining efficient refrigerant flow. The grooves are designed with appropriate curvature rather than sharp angles, allowing the refrigerant to follow the contour smoothly. This curved geometry increases the cooled area without creating flow resistance or stagnation, resolving the contradiction between cooling range expansion and flow efficiency.
3Area of stationary object
If refrigerant guide grooves are arranged in a lattice pattern to cover the entire press-molding surface, then cooling coverage is maximized, but regions of refrigerant stagnation occur between ejection and discharge ports, preventing uniform cooling
Solution Approach 1:
The patent creates distinct local flow paths for different segments of the refrigerant guide groove, where each segment (first, second, third grooves) serves a specific region of the press-molding surface. The grooves are positioned and oriented to direct refrigerant flow to specific areas without interference from adjacent segments. This local differentiation ensures that each region receives adequate refrigerant flow without stagnation, achieving both comprehensive coverage and uniform cooling.
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 uniform cooling of the workpiece, reducing temperature differences and improving the quenching strength of the press-molded product by maintaining consistent refrigerant flow without causing stagnation, thus enhancing the overall uniformity and strength of the press-molded product.
Implementation Method 1
cooling the pressed workpiece using a refrigerant... a refrigerant circulates through grooves in the press-molding surface of the upper mold to cool the workpiece
Data Source
AI summary
A lower mold includes: refrigerant ejection ports in its press-molding surface; and three or more independent refrigerant guide grooves extending in the press-molding surface from the refrigerant ejection ports to guide the refrigerant ejected from the refrigerant ejection port to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece. Each of the refrigerant guide grooves neither branches halfway nor merges with the others of the refrigerant guide grooves to extend from the refrigerant ejection ports to the outer portion of the press-molding surface.