Article Transport Facility Conveyor Timing Control

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Solution Overview

Problem

Existing article transport facilities face challenges in loading articles of different shapes without reducing the transport capacity or speed, as larger articles can inadvertently accelerate smaller ones, preventing them from being loaded into the correct supports.

Innovation Solution

The facility employs a dual conveyor system where the first conveyor adjusts the timing and position of loading based on article length and width, ensuring accurate placement on the second conveyor, which synchronizes with the main conveyor's speed, allowing for sequential loading of articles of varying sizes without reducing transport capacity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If articles are sequentially loaded onto the main conveyor device, then the transport capacity (transport speed) can be maintained, but articles of different shapes cannot be properly loaded due to acceleration interference

Engineering Contradiction:
Improvetransport capacityVSAvoidloading precision
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The article loading device performs preliminary actions by adjusting the timing and position of articles before they are loaded onto the main conveyor device. The control unit calculates the required timing and position adjustments based on article shape information, and the loading device executes these adjustments in advance, ensuring that articles are properly positioned before the acceleration interference occurs during sequential loading.

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If the transport speed of the main conveyor device is reduced, then articles of different shapes can be loaded sequentially, but the transport capacity is reduced

Engineering Contradiction:
Improveloading precisionVSAvoidtransport capacity
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The system changes the parameters of article placement by dynamically adjusting the timing and position where articles are loaded onto the main conveyor device. Based on the shape information of each article, the control unit calculates optimal loading parameters that accommodate different article shapes without requiring reduction of the main conveyor's transport speed, thus maintaining both loading precision and transport capacity.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If a single conveyor system is used for loading articles, then the device complexity is low, but it cannot handle articles of different shapes effectively

Engineering Contradiction:
Improveadaptability to different article shapesVSAvoidconveyor system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The article loading device is designed with multi-functionality to handle various article shapes effectively. It includes a control unit that acquires shape information of articles and calculates appropriate timing and position adjustments, making the loading device adaptable to different article types. This universal design allows a single loading device to serve multiple purposes without requiring separate specialized systems for each article shape.

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

Data Source

PatentUS11795013B2Article transport facility
Publication Date: 2023.10.24 DAIFUKU CO LTD
  • US11795013B2 patent drawing
  • US11795013B2 patent drawing
  • US11795013B2 patent drawing

AI summary

An article transport facility includes a main conveyor device and induction conveyors. The main conveyor device includes belt conveyors and carriage bodies. The induction conveyor includes a first conveyor device for loading article onto a second transport path and a second conveyor device that is provided for an article-loading position on a transport path and loads the article onto the belt conveyor. The first conveyor device adjusts the timing of loading the article to the article-loading position, by controlling the timing of loading the article onto the second conveyor device. The second conveyor device adjusts, on the belt conveyors, loading position of the article loaded onto the belt conveyor by controlling the timing of loading the article onto the belt conveyor.