Soft-Magnetic Mover Transport for Non-Contact Coil Guidance
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Solution Overview
Problem
Existing transport systems using permanent magnets for movers face issues such as demagnetization under high temperatures, loss of controllability, and safety concerns due to attraction of surrounding magnetic materials, leading to impaired workability and productivity.
Innovation Solution
A transport system utilizing a mover with a force-receiving part made of soft magnetic material, movable along a plurality of coils by electromagnetic forces, allowing non-contact transportation and control without permanent magnets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a strong permanent magnet is used for the mover, then non-contact transport is achieved, but the permanent magnet attracts surrounding magnetic materials during maintenance, deteriorating workability and safety
Solution Approach 1:
The patent extracts the permanent magnet from the mover and places it in the stator. This eliminates the safety hazard of the mover attracting magnetic materials during maintenance operations, while the non-contact transport function is maintained through the electromagnetic interaction between the stator's permanent magnet and the mover's soft magnetic material.
2Measurement precision
If a guiding apparatus such as a linear guide is used, then the mover can be guided accurately, but contaminants from sliding portions reduce productivity and shorten the guide's life
Solution Approach 1:
The patent replaces the mechanical contact-based linear guide with a magnetic field-based guidance system. The mover equipped with soft magnetic material interacts with the magnetic field from the stator's permanent magnet to achieve guidance without physical contact, eliminating contaminants from sliding portions and improving productivity.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the stator and mover for guidance. The soft magnetic material in the mover responds to the magnetic field from the stator's permanent magnet, enabling contactless guidance that avoids the contamination issues of mechanical guides.
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 non-contact transportation with maintained controllability and workability, preventing demagnetization and attraction of magnetic materials, thereby enhancing productivity and safety.
Implementation Method 1
the mover is movable in the first direction along the plurality of coils by a force received by the force-receiving part from a magnetic field by the plurality of coils
Data Source
AI summary
A transport system includes: a mover including a force receiving part made of soft magnetic material; and a plurality of coils arranged along the first direction, wherein the mover is movable in the first direction along the plurality of coils by a force received by the force-receiving part from a magnetic field by the plurality of coils.