Curved-Track Linear Motor Conveyance for Extended Transport Distance

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Solution Overview

Problem

Existing linear motor conveyance systems are limited in the transport distance they can achieve within a confined area, particularly when using a linear motor unit.

Innovation Solution

A linear motor conveyance system that utilizes a transport track consisting entirely of curved tracks, allowing for the extension of the transport distance by incorporating both positive and negative curvatures, and potentially including endless or non-endless configurations, with processing devices positioned both inside and outside the track.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If a linear motor unit transports carriers along a straight track, then the transport system is simple in structure, but the transport distance within a limited area is short

Engineering Contradiction:
Improvetransport distanceVSAvoidarea occupied by transport track
Core Design Contradiction:
Length of moving objectVSArea of stationary object

Solution Approach 1:

The transport track is designed to include only curved tracks with positive or negative curvature throughout, replacing straight tracks with curved geometry to increase transport distance within a limited area while maintaining linear motor propulsion

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Length of moving object

If the transport track includes only curved tracks, then the transport distance in a limited area is extended, but the track design becomes more complex

Engineering Contradiction:
Improvetransport distanceVSAvoidtrack design complexity
Core Design Contradiction:
Length of moving objectVSDevice complexity

Solution Approach 1:

The track design uses continuous curved geometry with defined positive and negative curvature sections, creating a complex but functional path that maximizes transport distance within the available space

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The curved track is divided into distinct sections with different curvature characteristics (positive curvature sections and negative curvature sections), allowing for modular design and analysis of the transport path

Inventive Principle:
Principle #1Segmentation

3Productivity

If processing devices are positioned both inside and outside the curved track, then container processing efficiency is enhanced, but the system layout becomes more complex

Engineering Contradiction:
Improvecontainer processing efficiencyVSAvoidsystem layout complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

Processing devices are arranged in multiple spatial dimensions relative to the curved track - some positioned inside the curve and others outside - utilizing three-dimensional space to maximize processing efficiency without excessive layout complexity

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 enables a significant increase in the transport distance of carriers within a limited area, enhancing the length of the transport track and the efficiency of container processing operations.

Implementation Method 1

a linear motor unit that transports the at least one carrier along a transport track

Methodology Applied
Scientific EffectElectromagnetic force: Lorentz Force

Data Source

PatentEP4628436A1Linear motor conveyance system and linear motor conveyance method
Publication Date: 2025.10.08 PACRAFT CO LTD
  • EP4628436A1 patent drawingFigure 1~2
  • EP4628436A1 patent drawingFigure 3
  • EP4628436A1 patent drawingFigure 4~5

AI summary

A linear motor conveyance system includes: at least one carrier that supports an object used for container processing; and a linear motor unit that transports the at least one carrier along a transport track, wherein the transport track includes only a curved track or curved tracks throughout.