Electroformed Component Manufacturing via Sequential Mold Transfer

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Solution Overview

Problem

Conventional methods for manufacturing electroformed components are inefficient as they require separate manufacturing steps for each type of component, leading to poor accuracy and increased complexity when multiple types of components with different shapes need to be manufactured, especially those that are partially in close contact or moving relative to each other.

Innovation Solution

A method involving the sequential formation of electroformed components using photoresist layers and electroforming, with planarization and separation techniques to enable the concurrent manufacturing of multiple types of components with different shapes, including those that are partially in contact or moving relative to each other, by using a conductive layer as an electrode and applying a film for separation to facilitate accurate and efficient production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple types of electroformed components are manufactured using conventional separate manufacturing steps, then each component can be produced, but manufacturing efficiency is poor and production time increases

Engineering Contradiction:
Improvemanufacturing efficiencyVSAvoidproduction time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent merges the manufacturing process of multiple different electroformed components into a single integrated electroforming step. Different components are formed simultaneously on the conductive substrate using a single electroforming bath, eliminating the need for separate manufacturing steps for each component type. This directly resolves the contradiction by improving productivity through process consolidation while reducing total production time.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The conductive substrate serves as a universal platform that can simultaneously support the formation of various types of electroformed components with different shapes and functions. The electroforming process itself becomes a multi-functional technique capable of producing diverse components in one operation, thereby improving manufacturing efficiency and reducing time loss.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of manufacture

If separate manufacturing steps are used for different electroformed components, then each component can be produced, but manufacturing complexity increases

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidprocess complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

By combining multiple component manufacturing operations into a single electroforming step, the patent reduces the number of separate manufacturing steps required. This simplification directly addresses the contradiction by making the overall manufacturing process easier to execute while reducing the complexity associated with coordinating multiple separate processes.

Inventive Principle:
Principle #5Merging (Combining)

3Manufacturing precision

If different manufacturing steps are used for components that are to abut each other, then components can be produced, but manufacturing accuracy in abutting portions cannot be ensured

Engineering Contradiction:
Improveabutment accuracyVSAvoidcomponent shape variety
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The patent forms multiple components including those intended to abut each other in a single electroforming operation. This ensures that all components share the same manufacturing reference frame and process conditions, guaranteeing high precision at abutting interfaces. Simultaneously, the electroforming process can accommodate various component shapes and configurations, thus maintaining versatility while achieving superior abutment accuracy.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The electroforming process allows for local variation in component geometry and material properties while maintaining uniform manufacturing conditions across all components. This enables precise control of abutting surfaces with the required accuracy while still producing components with diverse shapes and functions as needed.

Inventive Principle:
Principle #3Local quality

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 method allows for the accurate and efficient manufacturing of multiple types of electroformed components with different shapes in a series of steps, ensuring precise fit and reduced manufacturing time, even for components with stepped portions, thereby improving manufacturing efficiency and accuracy.

Implementation Method 1

depositing a first electroformed member on the front surface side of the conductive layer in the first opening by electroforming using the conductive layer as one electrode

Methodology Applied
Scientific EffectElectroforming: Electrodeposition

Data Source

PatentEP3231898B1Method for manufacturing electroformed components
Publication Date: 2019.10.09 CITIZEN WATCH CO LTD
  • EP3231898B1 patent drawingFigure 1~4
  • EP3231898B1 patent drawingFigure 5~6
  • EP3231898B1 patent drawingFigure 7~9

AI summary

In manufacturing of a first electroformed component (40) and a second electroformed component (60) having portions fitted to each other into close contact, after the first electroformed component (40) is formed, the first electroformed component (40) is used as a portion of an electroforming mold to form the second electroformed component (60). Using the first electroformed component (40) as a portion of the electroforming mold to form the second electroformed component (60), the shape of the first electroformed component (40) is transferred to the second electroformed component (60). As a result, multiple types of components differing in shape may be accurately manufactured concurrently in a series of manufacturing steps.