Inflatable Bladder for Composite Flange Forming

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Solution Overview

Problem

Current methods for forming flanges on composite components are labor-intensive and operator-dependent, making it difficult to achieve consistent quality and automate the process, as they are not well-suited for composite materials.

Innovation Solution

An apparatus comprising a mold, a bladder, and forming elements that use inflation to apply pressure and shape composite components into flanges, allowing for semi-automated or automated flange formation by confining the bladder between the mold and component to impart a forming force.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional manual processes are used to form flanges on composite components, then operator flexibility is maintained, but labor intensity increases and quality consistency deteriorates

Engineering Contradiction:
Improveoperator flexibilityVSAvoidlabor intensity
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The inflatable bladder automatically conforms to the component geometry and applies forming pressure without requiring continuous operator intervention. The system serves itself by using the bladder's inherent elasticity and the inflation mechanism to perform the forming action, eliminating the need for manual manipulation while maintaining adaptability to different component shapes.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent employs an inflatable bladder that uses pneumatic pressure to apply forming force to the composite component. By inflating the bladder with gas or fluid pressure, the system automatically generates the necessary forming force to create flanges on composite components, replacing manual labor with a controlled pneumatic process that ensures consistency and reduces operator dependency.

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Ease of manufacture

If conventional manual processes are used to form flanges on composite components, then process simplicity is maintained, but quality consistency deteriorates due to operator dependency

Engineering Contradiction:
Improveprocess simplicityVSAvoidquality consistency
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The system incorporates control mechanisms that monitor and regulate the inflation pressure of the bladder, ensuring consistent forming force is applied throughout the process. This feedback control maintains manufacturing precision by automatically adjusting parameters to achieve uniform flange formation across different components, eliminating variability introduced by manual operations.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent utilizes controlled changes in pneumatic pressure parameters to achieve consistent forming results. By precisely controlling the inflation pressure, duration, and rate of the bladder, the system ensures repeatable flange formation quality across multiple components, transforming a manually variable process into a controlled parametric process.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If automated processes are implemented, then productivity and consistency improve, but device complexity increases due to motion complexity

Engineering Contradiction:
Improveautomation capabilityVSAvoidmotion complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The inflatable bladder inherently adapts to the curved or complex geometry of composite components through its flexible, expandable structure. This allows the system to handle complex component shapes without requiring complex mechanical motion systems, as the bladder's curvature and flexibility naturally conform to the component surface, simplifying the overall device architecture while maintaining automation capability.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The patent employs a flexible inflatable bladder that can adapt to various component geometries without requiring complex rigid mechanisms. This flexible shell approach enables automated forming of flanges on components with diverse shapes while keeping the device relatively simple, as the bladder's flexibility replaces the need for complex adaptive motion systems.

Inventive Principle:
Principle #30Flexible shells and thin films

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 enables the efficient and consistent formation of flanges on composite components, improving process efficiency and reducing operator dependency, making it suitable for automated lay-up processes.

Implementation Method 1

a bladder disposed in the space and configured to impart a forming force to a portion of the component to form the flange on the component when the bladder is inflated

Methodology Applied
Scientific EffectInflation: Pressure Increase

Data Source

PatentUS8622731B2Apparatus for forming flanges on components
Publication Date: 2014.01.07 GENERAL ELECTRIC CO
  • US8622731B2 patent drawing
  • US8622731B2 patent drawing
  • US8622731B2 patent drawing

AI summary

An apparatus for forming a flange on a component is provided. The apparatus comprises a mold disposed for placement of the component thereon, a forming element configured to hold the component on the mold to facilitate formation of the flange, and a pressure element configured to cooperate with the mold to define a space therebetween. The apparatus further comprises a bladder disposed in the space and configured to impart a forming force to a portion of the component to form the flange on the component when the bladder is inflated. A method for forming a flange on a component is also presented.