Pulse Welding Synchronization via Communication Link

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Solution Overview

Problem

Existing multiple pulse welding processes, particularly tandem pulse welding, face challenges in achieving stable synchronization and optimal welding quality due to differences in welding wire feed speed and pulse frequency between simultaneously operating welding processes, leading to potential instability and poor welding results.

Innovation Solution

A method for synchronizing multiple pulse welding processes through a communication link that transmits synchronization pulses to ensure the desired relationship between pulse frequencies and phases, allowing automatic adjustment without manual intervention, using frequency dividers and phase shifts to align the welding cycles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple pulse welding processes are operated independently with separate welding devices, then each process can be controlled individually, but synchronization stability deteriorates and welding quality decreases

Engineering Contradiction:
ImproveIndependent control of welding parametersVSAvoidSynchronization stability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system transmits synchronization information from a first welding device to a second welding device, creating a feedback loop that ensures both welding processes remain synchronized. This allows independent parameter control while maintaining synchronization stability through continuous information exchange.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The welding devices are designed to perform both independent welding operations and synchronized operations by receiving and processing synchronization information. This multi-functionality allows the system to adapt between independent and synchronized modes as needed.

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

2Adaptability or versatility

If welding wire feed speed and pulse frequency are set separately for each welding process, then parameter adaptability is improved, but the complexity of parameter setting increases and welding quality deteriorates

Engineering Contradiction:
ImproveParameter setting flexibilityVSAvoidParameter setting complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The synchronization information transmission creates a feedback mechanism where the second welding device automatically adjusts its parameters based on the first welding device's settings. This reduces parameter setting complexity while maintaining adaptability, as the system self-coordinates rather than requiring manual configuration of multiple parameters.

Inventive Principle:
Principle #23Feedback

3Manufacturing precision

If synchronized welding processes are implemented, then welding quality is improved and spatter is reduced, but the system complexity increases due to communication requirements

Engineering Contradiction:
ImproveWelding qualityVSAvoidSystem complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system uses a communication link to transmit synchronization information between welding devices, creating a feedback loop that coordinates welding parameters. This feedback mechanism improves welding quality and reduces spatter by ensuring synchronized operation, while the digital communication approach keeps system complexity manageable compared to analog coordination methods.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12459047B2Multiple pulse welding process
Publication Date: 2025.11.04 FRONIUS INT GMBH
  • US12459047B2 patent drawing
  • US12459047B2 patent drawing
  • US12459047B2 patent drawing

AI summary

In order to synchronize the at least two pulse welding processes performed simultaneously by welding devices in a multiple pulse welding process, the welding devices are connected to one another by a communication link and synchronization information is transmitted via the communication link from a transmitting welding device to at least one receiving welding device. The synchronization information is used in the receiving welding device to synchronize the pulse welding process performed by the receiving welding device with the pulse welding process performed by the transmitting welding device.