Laser Soldering Condition Selection Using Pre-calculated Databases

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Solution Overview

Problem

Conventional soldering methods with laser radiation rely heavily on trial-and-error to determine optimal light radiating conditions, leading to inefficiencies in time and effort, despite advancements in CAD-assisted solder application devices that improve positioning efficiency but not light radiating conditions.

Innovation Solution

A method and device that enter component, board, and solder information to determine suitable light radiating conditions using a calculator and stored databases on light radiation power and time, outputting these conditions for improved productivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If trial-and-error methods are used to determine light radiating conditions, then proper soldering conditions can be achieved for each solder joint, but time and effort are excessively consumed

Engineering Contradiction:

Improveproper soldering conditionsVSAvoidtime and effort

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent pre-calculates and stores optimal light radiating conditions (power, time, pulse width) in databases before actual soldering operations. When a soldering task is assigned, the system retrieves pre-determined parameters based on component and board information, eliminating the need for real-time trial-and-error adjustments and significantly reducing setup time while maintaining reliable soldering conditions.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent systematically varies and optimizes light radiating parameters (power, time, pulse width) through pre-experiments, storing the optimal parameter combinations in databases. During production, these optimized parameters are directly applied based on component characteristics, transforming the iterative trial-and-error process into a efficient parameter retrieval operation that maintains soldering quality while reducing time consumption.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If CAD-assisted solder application devices are used, then positioning efficiency is improved, but light radiating conditions still require trial-and-error determination

Engineering Contradiction:

Improvepositioning efficiencyVSAvoidlight radiating conditions determination

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent integrates the light radiating condition determination function into the existing CAD-assisted soldering system. The same computer that manages positioning and solder application also calculates and determines light radiating parameters by accessing component databases and applying thermal models, eliminating the need for separate trial-and-error procedures and reducing overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces a database intermediary that stores pre-calculated light radiating conditions for various component and board configurations. The system queries this database using component information as keys, retrieving optimal parameters without requiring real-time complex calculations or trial-and-error adjustments, thus simplifying the determination process while maintaining high positioning efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 approach accelerates the selection of optimal light radiating conditions, reducing the time and effort required, thereby enhancing productivity in soldering operations by determining suitable light radiating conditions through data-driven calculations.

Implementation Method 1

laser radiation

Methodology Applied

Scientific EffectLight radiation: Laser

Implementation Method 2

light radiation applied to a solder joint

Methodology Applied

Scientific EffectLight to thermal energy conversion: Absorption (EM radiation)

Data Source

PatentUS7847211B2Light radiating conditions selecting method, light radiating conditions selecting device, and soldering device

Publication Date: 2010.12.07 PANASONIC HOLDINGS CORP

AI summary

A method and device capable of properly selecting light radiating conditions in soldering work where components are soldered onto a board with light radiation applied to a solder joint. The device for selecting the light radiation conditions may contain a) an input device for entering information on; b) a storage for storing at least any one of databases on light radiation power and light radiation time for soldering; c) a calculator for determining light radiating conditions according to the information entered through the input device and the database stored in the storage; and d) an output device for outputting the light radiating conditions determined by the calculator. The input device may further comprise i) a component; ii) a board on which the component is soldered; and iii) solder for soldering the component.