Pipe Forming Power Line Layout for Leakage Magnetic Field Suppression
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Solution Overview
Problem
The generation of leakage magnetic fields from power supply lines in forming systems affects peripheral equipment, necessitating a solution to minimize this interference.
Innovation Solution
The power supply line is configured to pass through the lower side of the forming die's placing surface, with parallel positive and negative electrode lines canceling magnetic fluxes, and connection portions are strategically drawn to avoid interference with die replacement carriages and other equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the power supply line is disposed near the forming die for easy connection, then the ease of operation is improved, but the leakage magnetic field affects peripheral equipment
Solution Approach 1:
The power supply unit is extracted from the main body part and disposed at a separated position. The power supply line connects the electrode on the main body part with the power supply unit at the separated position, thereby removing the source of leakage magnetic field from the vicinity of peripheral equipment while maintaining electrical connection functionality.
Solution Approach 2:
The power supply line is configured to pass through the lower side of the placing surface in the vertical dimension, rather than being disposed horizontally near the forming die. This spatial reconfiguration in another dimension reduces the magnetic field's impact on peripheral equipment while preserving electrical connectivity.
2Object-affected harmful factors
If the positive electrode line and negative electrode line are disposed in parallel, then the magnetic fluxes mutually cancel and leakage magnetic field is suppressed, but the device complexity increases
Solution Approach 1:
The patent utilizes the harmful leakage magnetic field by configuring the positive and negative electrode lines in parallel, allowing their opposing magnetic fluxes to mutually cancel each other. This converts the harmful magnetic field effect into a beneficial cancellation mechanism, suppressing the leakage magnetic field's influence on peripheral equipment.
3Object-affected harmful factors
If the power supply unit is disposed at a separated position, then the leakage magnetic field influence on peripheral equipment is reduced, but the power supply line length increases
Solution Approach 1:
The power supply unit is extracted from the main body part and positioned at a separated location to minimize magnetic field interference with peripheral equipment. The power supply line serves as the connecting element, extending from the electrode on the main body to the power supply unit at the separated position, thereby achieving spatial separation while maintaining electrical connectivity.
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 configuration effectively suppresses the influence of leakage magnetic fields on peripheral equipment, ensuring efficient operation and reducing resistance in the power supply lines.
Implementation Method 1
The direction of a magnetic field (the direction of a magnetic flux) which is generated by the positive electrode line and a magnetic field (the direction of a magnetic flux) which is generated by the negative electrode line are opposite to each other. Therefore, the positive electrode line and the negative electrode line are disposed in parallel, whereby it is possible to mutually cancel some magnetic fluxes and further suppress the influence of the leakage magnetic field on peripheral equipment.
Implementation Method 2
the metal pipe material is heated by bringing each electrode into contact with the metal pipe material and performing energization
Data Source
Figure 1
Figure 2A~2C
Figure 3
AI summary
A forming system is a forming system which forms a metal pipe by expanding a metal pipe material, and includes: a main body part having a forming die for forming the metal pipe; an electrode causing an electric current to flow through the metal pipe material disposed in the forming die such that the metal pipe material is heated; a power supply unit which is disposed at a position separated from the main body part and supplies electric power to the electrode; and a power supply line which connects the power supply unit and the electrode, in which the power supply line includes a lower-side passing portion which passes through a lower side of a placing surface on which the main body part is placed, a first connection portion which is drawn to an upper side of the placing surface and connects the lower-side passing portion and the electrode, and a second connection portion which connects the lower-side passing portion and the power supply unit.