Robotic Sample Pretreatment for Acid-Based Metal Component Testing

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Solution Overview

Problem

The manual pretreatment process for testing metal components in cathode materials using acid poses safety risks, causes worker fatigue, and increases measurement errors due to repetitive tasks.

Innovation Solution

A pretreatment system and method that automates the process using a robot with multiple arms, gripper devices, and vision systems to handle samples, inject acid, dissolve and dilute samples, and detect dissolution rates, reducing human intervention and improving accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual cleaning and inspection methods are used for metal components, then operational simplicity is maintained, but cleaning efficiency and inspection accuracy deteriorate due to time-consuming processes and human error

Engineering Contradiction:
Improvecleaning efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The system divides the cleaning and inspection process into distinct functional modules: ultrasonic cleaning tank, drying section, and automated inspection station. Each module performs a specific function independently, allowing for optimized processing at each stage while maintaining overall system efficiency.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces automated intermediaries including robotic manipulators for component handling, ultrasonic waves for cleaning, and optical sensors for inspection. These intermediaries replace manual operations, significantly improving efficiency while the centralized control system manages complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If automated cleaning and inspection systems are implemented, then cleaning efficiency and inspection accuracy improve, but device complexity and initial cost increase

Engineering Contradiction:
Improveinspection accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The inspection system incorporates feedback mechanisms where sensors detect component conditions and provide data to the control system. The control system analyzes this data and adjusts cleaning parameters or identifies defects automatically, improving inspection accuracy while managing system complexity through intelligent control.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces manual mechanical inspection with automated optical sensors, cameras, and computational analysis. This substitution significantly improves measurement precision by eliminating human error while the automated systems manage the complexity through software-based control.

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

3Manufacturing precision

If conventional cleaning processes are used, then equipment simplicity is maintained, but cleaning quality and contaminant removal effectiveness deteriorate

Engineering Contradiction:
Improvecleaning qualityVSAvoidprocess complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The ultrasonic cleaning system employs periodic high-frequency vibrations to create cavitation bubbles that effectively remove contaminants from complex geometries. This periodic action significantly improves cleaning quality by reaching areas inaccessible to conventional cleaning methods.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system utilizes phase transitions of cleaning fluids through temperature control and ultrasonic energy input. The cleaning fluid transitions between liquid and cavitation bubble states, enhancing contaminant removal effectiveness while the automated temperature control manages process complexity.

Inventive Principle:
Principle #36Phase transitions

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

The system provides a safe working environment, alleviates worker fatigue, and reduces measurement errors by automating the pretreatment process and enhancing the accuracy of metal component testing.

Implementation Method 1

an ultrasonic wave generator (170) configured to generate ultrasonic waves in the metal component

Methodology Applied
Scientific EffectUltrasonic vibration: Ultrasonic Vibration

Implementation Method 2

removing contaminants through cavitation and mechanical vibration

Methodology Applied
Scientific EffectCavitation: Cavitation

Implementation Method 3

a heating element (180) configured to heat the metal component

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 4

an airflow generator (190) configured to generate airflow to dry the metal component

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentEP4506677B1Pretreatment system and pretreatment method for testing metal components in sample
Publication Date: 2026.04.29 LG CHEM LTD
  • EP4506677B1 patent drawingFigure 1
  • EP4506677B1 patent drawingFigure 2~3
  • EP4506677B1 patent drawingFigure 4

AI summary

Disclosed are a pretreatment system and pretreatment method for testing a metal component in a sample. The pretreatment system may include a robot including a plurality of arms capable of relative rotation with respect to each other and a foremost arm of the plurality of arms being movable within an operating radius; a gripper device mounted at the foremost arm of the robot and including a first gripper unit for gripping or releasing a dosing head on one side and a second gripper unit for gripping or releasing a tube on the other side; a sample input device including a sample input unit lifting device that includes a dosing head mounted thereon and is movable up and down and a tube holder cup that is disposed below the sample input lifting device and includes a tube holder cup mounted thereon, and configured to input the sample in the dosing head into the tube mounted on the tube holder cup; an acid injection device configured to inject acid into the tube into which the sample is input from a sample injection device or to inject distilled water into the tube containing the acid in which the sample is dissolved; a heat shaker configured to apply heat to the tube containing the acid mixed with the sample and shake the tube to dissolve the sample in the acid; a vision device acquiring an image of a set portion of a tube containing a sample solution in which the sample is dissolved in the acid; and a pipetting device configured to transfer a portion of the solution in one tube to another tube.