Soldering Iron Cartridge Control for Traceable Thermal Load Management

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Solution Overview

Problem

Current soldering iron control devices lack features to prevent incorrect combinations of soldering iron settings with cartridges, fail to ensure traceability of soldering operations, and do not adequately prevent overheating or falling hazards, while also not supporting Internet of Things (IoT) integration.

Innovation Solution

A soldering iron control device system that includes a nonvolatile memory in the cartridge for storing dedication information, a communication unit for network connectivity, and sensors for monitoring temperature, acceleration, and power usage, which allows for proper setting combinations, traceability, thermal load management, and automatic calibration, as well as IoT integration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a soldering iron control device with settings for leaded and lead-free solder is used, then the device can support multiple soldering types, but incorrect combination of settings and cartridges may occur

Engineering Contradiction:
Improvesupport multiple soldering typesVSAvoidprevention of incorrect combination
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The control device reads dedication information from the cartridge's nonvolatile memory and provides feedback through notifications (visual, audible, or tactile) when an incorrect combination is detected. This feedback mechanism prevents incorrect soldering operations by alerting the operator before the soldering process begins.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary verification by reading and checking the dedication information stored in the cartridge's nonvolatile memory before allowing the soldering operation to proceed. This preliminary check ensures that the cartridge type matches the selected soldering mode, preventing incorrect combinations.

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If conventional power supply control devices are used, then the basic temperature control function is provided, but traceability of soldering operations is not ensured

Engineering Contradiction:
Improvetemperature control functionVSAvoidtraceability of soldering operations
Core Design Contradiction:
Ease of operationVSLoss of information

Solution Approach 1:

A communication unit acts as an intermediary between the control device and external systems (such as servers or management systems). This communication unit transmits operation information including temperature settings, operation timing, and cartridge identification, enabling traceability of soldering operations while maintaining simple temperature control functionality.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If basic temperature control is implemented, then the soldering function is provided, but prevention of overheating and falling hazards is inadequate

Engineering Contradiction:
Improvesoldering functionVSAvoidoverheating and falling hazards
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The control device performs preliminary checks before enabling the heating function. It verifies that the cartridge is properly attached and reads the dedication information to ensure appropriate temperature settings. This preliminary action prevents overheating hazards by ensuring the system is in a safe state before heating begins.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors operation conditions and provides feedback through notifications to alert operators of potential hazards such as overheating or improper cartridge attachment. This feedback mechanism enables timely intervention to prevent harmful effects.

Inventive Principle:
Principle #23Feedback

4Device complexity

If the soldering iron is designed for basic operation, then simplicity is maintained, but IoT integration is not supported

Engineering Contradiction:
Improvesimplicity of operationVSAvoidIoT integration capability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The control device incorporates a communication unit that enables multiple functions including local operation, remote monitoring, and data transmission. This multi-functional approach allows the device to maintain simple local operation while also supporting IoT integration for enhanced management and traceability capabilities.

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

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

Ensures correct soldering iron and cartridge settings, provides traceability of soldering operations, prevents overheating and falling hazards, and supports IoT connectivity for enhanced management and safety.

Implementation Method 1

a nonvolatile memory, which stores dedication information indicating whether the cartridge is dedicated to leaded solder or dedicated to lead-free solder

Methodology Applied
Scientific EffectNonvolatile memory storage:

Implementation Method 2

a heater unit configured to heat the tip

Methodology Applied
Scientific EffectJoule heating: Joule Heating

Implementation Method 3

a temperature sensor configured to measure a temperature of the tip

Methodology Applied
Scientific EffectTemperature sensing:

Implementation Method 4

The soldering iron is connected to a control device that controls the amount of power supplied to the heater unit, based on the temperature indicated by the temperature sensor

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentEP3666439B1Soldering iron control device, cartridge, and soldering iron management system
Publication Date: 2023.11.01 HAKKO CO LTD
  • EP3666439B1 patent drawingFigure 1
  • EP3666439B1 patent drawingFigure 2
  • EP3666439B1 patent drawingFigure 3

AI summary

A soldering iron control device (100) allows electrical connection to a soldering iron (200) and controls a temperature of a tip (221) of the soldering iron (200). The soldering iron control device (100) includes a storage unit (109b) and a measurement unit (109c). The storage unit (109b) stores in advance a first amount of power to be supplied to the soldering iron (200) in an idling state where the tip (221) is noncontact and the temperature of the tip (221) is maintained within a predetermined range including a set temperature. The measurement unit (109c) measures, when the tip (221) enters a load state where the temperature of the tip (221) decreases by a predetermined amount or more from the set temperature by the tip (221) coming into contact with a workpiece, a third amount of power obtained by subtracting the first amount of power from a second amount of power to be supplied to the soldering iron (200) in the load state.