Flat Conductor Cross-Section Control via Curved Wire Pressing
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Solution Overview
Problem
Existing methods for producing flat conductors from metal wires with circular cross-sections are limited in creating varied shapes and often result in material waste, especially when forming features like connecting mandrels and sealing rings.
Innovation Solution
A method involving preforming a metal wire into a curved shape and then pressing it flat to create sections with different cross-sectional shapes, including circular and rectangular shapes, allowing for material displacement in both transverse and longitudinal directions using specifically designed press tools, enabling the formation of flat conductors with varying cross-sectional areas and features like sealing grooves without cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a simple flattening process is used to produce flat conductors from circular wire, then the production process is simple and fast, but the variety of cross-sectional shapes that can be produced is limited
Solution Approach 1:
The flat conductor is divided into multiple sections along its longitudinal axis, where each section can have a different cross-sectional shape (flat, circular, oval, etc.). This segmentation allows the conductor to accommodate different sealing ring sizes and types while maintaining a single continuous piece, thereby increasing shape variety without requiring multiple separate components or complex multi-step forming processes
Solution Approach 2:
The cross-sectional parameters (shape, area, dimensions) are varied along the longitudinal axis of the conductor. By changing the cross-sectional parameters at different locations, the conductor can provide different functional zones (e.g., sealing zones with circular cross-sections, connecting zones with flat cross-sections) while being produced in a single continuous forming operation
2Manufacturing precision
If cutting is used to create features like connecting mandrels and sealing rings, then the production of specific features is precise, but material waste increases
Solution Approach 1:
The features such as connecting mandrels and sealing ring grooves are formed during the initial flat pressing operation itself, rather than requiring subsequent cutting or machining steps. The press tool is designed to directly form these features as the wire is being flattened, thereby achieving precise features without material removal and eliminating associated material waste
Solution Approach 2:
The material itself is shaped to create the required features through controlled displacement during pressing. The sealing grooves and connecting mandrels are formed by the material flowing into the desired shapes under press tool guidance, allowing the material to serve its own forming function without requiring separate cutting operations that would generate waste
3Adaptability or versatility
If material is displaced only in the transverse direction during pressing, then the pressing process is simple, but the ability to form varied cross-sectional shapes is limited
Solution Approach 1:
Material displacement is enabled in both transverse and longitudinal directions during the pressing operation. This two-dimensional material flow control allows the formation of complex cross-sectional shapes and varying cross-sectional areas along the conductor length, transforming a simple one-directional pressing process into a multi-dimensional forming capability
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 approach allows for the efficient production of flat conductors with diverse shapes and features, reducing material waste and enabling effective sealing and connection capabilities, while maintaining electrical conductivity.
Implementation Method 1
A plastically deformable material, in particular a metal, is used to produce the flat conductor, in which the circular initial cross section is flattened while reducing the initial diameter, the material displaced in the transverse direction being formed into the desired flat cross section
Data Source
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AI summary
The invention relates to a method for producing a flat conductor with a non-linear curved shape from a metallic wire having a substantially circular cross-section, wherein the wire is pre-formed into a curved intermediate shape by bending and the intermediate shape is then flattened to form the flat conductor. According to the invention, during flattening, the flat conductor is formed with at least two first sections having a first flat cross-sectional shape and at least one intermediate second section having a second cross-sectional shape that differs from the first flat cross-sectional shape.