3D-Printed Shaver Handle Manufacturing Without Mold Assembly
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Solution Overview
Problem
Current manufacturing methods for shaver handle elements are inefficient in terms of material consumption, economy, ease of manufacturing, and aesthetics, requiring costly mold design and assembly, limiting flexibility and increasing production costs.
Innovation Solution
The use of digital fabrication, specifically 3D printing, allows for the direct creation of shaver handle elements without molds, enabling more flexible design, reduced material usage, and easier production, with the ability to produce complex geometries and moving parts in a single piece, while reducing investment and maintenance costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If injection molding is used to manufacture shaver handle elements, then production efficiency and mechanical strength are improved, but manufacturing cost and mold complexity increase
Solution Approach 1:
The patent combines multiple manufacturing steps (mold making, injection molding, assembly) into a single additive manufacturing process. The 3D printer directly fabricates the complete handle element including integrated attachment mechanisms and moving parts, eliminating the need for separate mold components and assembly operations.
Solution Approach 2:
The additive manufacturing system serves multiple functions: it creates complex geometries, produces moving parts, forms attachment mechanisms, and accomplishes assembly all in one process. This universal approach replaces the specialized injection molding process that requires separate tools for each function.
2Strength
If injection molding with multiple parts is used, then mechanical requirements are met, but assembly complexity and production time increase
Solution Approach 1:
The patent merges multiple separate parts into a single monolithic structure fabricated by additive manufacturing. The handle element, attachment mechanisms, and moving parts are all created as one integrated component, eliminating assembly operations and reducing production time.
3Manufacturing precision
If traditional molding is used, then consistent quality is achieved, but flexibility and adaptability decrease
Solution Approach 1:
The patent implements dynamic adaptability by enabling rapid modification of the digital model file to produce different handle element designs. This allows the manufacturing process to adapt to changing requirements without retooling, while additive manufacturing maintains consistent quality through digital precision.
4Productivity
If injection molding is used, then high volume production is efficient, but initial investment and mold storage costs increase
Solution Approach 1:
The patent replaces expensive, long-lived mold tools with affordable, disposable digital models. The digital file can be stored indefinitely without degradation, and modifying the design simply requires updating the digital model rather than manufacturing new physical molds.
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 lowers overall manufacturing costs, enhances manufacturing flexibility, allows for decentralized production, and enables quicker, more environmentally friendly delivery of shaver handle elements that meet mechanical requirements while optimizing material usage.
Implementation Method 1
a digital fabrication step wherein said shaver element is made by digital fabrication based on a digital file. Digital fabrication, as referred to here, may designate any additive manufacturing technology.
Data Source
AI summary
A method of manufacturing a shaver element including at least a shaver handle element (2) for a wet shaver, comprising a digital fabrication step (123) wherein said shaver element is made by digital fabrication technology.