Virtual Frame Reference for Manufacturing Component Alignment

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Solution Overview

Problem

Existing manufacturing processes for consumer goods face challenges in ensuring consistent component placement, leading to variations in product quality and consumer acceptance, particularly in disposable absorbent products where off-center or skewed components can result in leakage or aesthetic issues.

Innovation Solution

A controller system using a virtual frame of reference to analyze electronic images of components and generate phasing commands for machines, reducing the need for additional sensors and manual adjustments, thereby improving consistency and reducing human error.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual positioning methods are used for components, then ease of operation is maintained, but manufacturing precision deteriorates due to human error and inconsistency

Engineering Contradiction:
Improvecomponent placement precisionVSAvoidvision system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical positioning with an automated vision system that uses electronic imaging and computer processing to detect component positions and generate phasing commands, thereby improving manufacturing precision while reducing human error

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The vision system automatically captures images, processes component positions, and generates control commands without continuous human intervention, allowing the system to self-regulate and maintain consistent positioning precision

Inventive Principle:
Principle #25Self-service

2Manufacturing precision

If additional sensors and manual adjustments are added to improve positioning accuracy, then manufacturing precision improves, but device complexity increases

Engineering Contradiction:
Improvecomponent positioning accuracyVSAvoidsystem complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The vision system serves multiple functions: capturing component images, determining positions, comparing with setpoints, and generating phasing commands, thereby achieving high positioning accuracy without requiring multiple separate devices

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

Solution Approach 2:

The patent combines image capture, position analysis, comparison, and control command generation into a single integrated vision system, reducing the need for additional sensors and manual adjustment mechanisms

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If automated vision systems are implemented, then productivity improves through automation, but device complexity increases

Engineering Contradiction:
Improvemanufacturing automation levelVSAvoidcontrol system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The vision system continuously captures component positions, compares them with setpoints, and generates phasing commands to correct deviations, creating a closed-loop feedback system that automates positioning control

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The controller acts as an intermediary between the vision system and the phasing mechanism, processing image data and translating it into control commands that adjust component positioning

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS8914140B2System and method for manufacturing using a virtual frame of reference
Publication Date: 2014.12.16 PROCTER & GAMBLE CO
  • US8914140B2 patent drawing
  • US8914140B2 patent drawing
  • US8914140B2 patent drawing

AI summary

The system and method uses a virtual frame of reference to evaluate and control a manufacturing system. Electronic images from a vision system may be analyzed using the virtual frame of reference to control the phasing of devices in the manufacturing system and to generate alerts.