3D Decoration Molding With Amorphous Metal for Secure Attachment
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Solution Overview
Problem
Existing methods for decorating small elements, such as watch dials, require high precision and human intervention, leading to increased costs and risks of assembly errors, with limited grip of decorations and restricted thickness deposition through electroplating.
Innovation Solution
A method using amorphous metal that is heated between its glass transition and crystallization temperatures to reduce viscosity, allowing precise shaping and improved adhesion to the base, with a mask and mold system to create three-dimensional decorations, and optional anchoring features for enhanced grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional gluing, brazing, or crimping techniques are used to attach decorations to the base, then the decorations can be attached to the base, but the attachment is not secure and requires high precision with human intervention
Solution Approach 1:
The patent merges the decoration and base into a single integrated structure by making the decoration protrude from the base surface rather than being a separate attached component. This eliminates the need for separate attachment operations (gluing, brazing, or crimping) and their associated precision requirements and human intervention.
Solution Approach 2:
The patent creates anchoring means (cavities or recesses) in the base during the base manufacturing process, before the decoration is applied. This preliminary action allows the decoration to be securely formed in place during the molding process itself, ensuring secure attachment without requiring subsequent assembly operations.
2Extent of automation
If electroplating is used to deposit decorations, then the decoration process can be automated, but the deposition thickness is limited and cannot achieve significant thickness
Solution Approach 1:
The patent changes the fundamental approach from surface deposition (electroplating) to volumetric forming. By using amorphous metal molding, the process can achieve significant thickness (millimeters rather than micrometers) while maintaining automation. The amorphous metal's viscosity changes during cooling allow it to be molded into the desired three-dimensional shape with controlled thickness.
3Manufacturing precision
If small decorations are manufactured with high precision tooling, then the decorations achieve required precision, but the tooling cost increases significantly
Solution Approach 1:
The patent uses a single amorphous metal molding process that can manufacture decorations of various sizes and complexities without requiring different specialized tooling. The amorphous metal's properties allow one mold design to produce precise decorations across a range of scales, eliminating the need to adapt tooling for each decoration size and thereby reducing tooling costs.
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
Enables precise, cost-effective attachment of decorations with improved grip and thickness control, reducing assembly errors and increasing efficiency in decoration manufacturing.
Implementation Method 1
When amorphous metal is heated to a temperature between its glass transition temperature (Tg) and its crystallization temperature (Tx), its viscosity decreases significantly without losing its amorphous structure.
Implementation Method 2
its viscosity decreases significantly without losing its amorphous structure. This makes the amorphous material easier to shape, as it can perfectly conform to all the details of the mold into which it is pressed.
Data Source
Figure 1a~1e
Figure 2a~2e
Figure 3a~3e
AI summary
The invention relates to method for decorating a member, said method including the following steps : a) providing such a member (1, 11, 21, 31), said member including anchoring means (7) for improving the bonding of the decoration (5) on said member; b) making a mask (4) with the desired thickness of the decorations (5) and having at least one opening (4'); c) placing said at least one opening of the mask (4) against the place to be decorated in order to form at least one mould (4', 6, 6', 6", 100); d) filling said at least one mould by hot-forming with an at least partially amorphous material; e) retrieving the mask (4).