Reciprocating Paddle with Integral Square Bars for Surface Treatment
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Solution Overview
Problem
Conventional surface treatment devices fail to uniformly stir surface treatment solutions, leading to non-uniform plating thickness and turbulent flow, which can damage substrates and reduce stirring efficiency.
Innovation Solution
A surface treatment device with a paddle configured by integrally forming square bars at regular intervals and equipped with a liquid draining member, designed to move reciprocally near the substrate, reducing turbulent flow and improving plating thickness uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional paddle with independent fin and paddle structure is used, then the device can be simple in structure, but the stirring uniformity deteriorates and plating thickness becomes non-uniform
Solution Approach 1:
The fin and paddle are integrated into a single unified structure where the fin is formed as an integral part of the paddle body. This merging ensures that the fin and paddle move together as one unit, eliminating the independence issue that caused non-uniform stirring and plating thickness variations.
2Device complexity
If conventional stirring method is used, then the device can be simple, but turbulent flow is generated which damages substrates and reduces stirring efficiency
Solution Approach 1:
The fin is designed with a curved surface that faces the substrate, rather than a flat surface. This curvature allows the fin to guide the liquid flow smoothly along its contour, reducing turbulence and preventing damage to the substrate while maintaining effective stirring action.
Solution Approach 2:
The paddle is designed to move reciprocally (back and forth) rather than in a single direction. This periodic motion parameter change helps to distribute the stirring action more evenly and reduces the generation of harmful turbulent flow patterns that occur with conventional continuous unidirectional stirring.
3Device complexity
If only upper part of paddle is mounted to paddle shaft, then the structure can be simple, but stirring uniformity deteriorates with strong stirring in some areas and weak stirring in others
Solution Approach 1:
The paddle is divided into multiple sections including the paddle body, integrated fin, and mounting portion, with each serving a specific function. The fin is segmented into regions with different curvatures and orientations to create varied flow patterns that ensure uniform stirring throughout the liquid, preventing both strong and weak stirring zones.
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 enables uniform stirring of surface treatment solutions, enhancing plating thickness consistency and reducing turbulent flow, thus improving the durability and efficiency of the surface treatment process.
Implementation Method 1
there is a case that a turbulent flow is generated in the surface treatment solution
Implementation Method 2
a liquid draining member for draining a liquid is arranged in at least one side of an end of the paddle
Data Source
AI summary
A surface treatment device includes at least one paddle in a plate shape, in a surface treatment tank, for stirring a surface treatment solution near a substrate by reciprocally moving the paddle with respect to the substrate. The paddle is configured by integrally forming multiple square bars provided in a depth direction or a horizontal direction of the surface treatment solution at regular intervals along the substrate. A liquid draining member for draining a liquid is arranged in at least one side of an end of the paddle.