Robot Article Accumulation Layout for Precise Discharge Timing

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Solution Overview

Problem

Conventional article accumulating apparatuses risk unnecessary discharge of articles when a parallel robot fails to pick them up, leading to inefficiencies and potential loss of articles.

Innovation Solution

An article accumulating apparatus with a conveyance unit, a robot for transferring articles to an accumulation unit, and a discharge unit disposed within the robot's movable range, equipped with an air-jet device to discharge articles only when the robot cannot handle them, and a control unit for precise judgment based on article position detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the discharge unit is disposed upstream of the robot movable range, then articles that cannot be picked up can be discharged in time, but articles that should be transferred may be needlessly discharged

Engineering Contradiction:
Improvearticle transfer reliabilityVSAvoidarticle discharge timing
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

Instead of disposing the discharge unit upstream of the robot movable range (conventional approach), the patent inverts the arrangement by placing the discharge unit within the robot movable range at the downstream end. This allows the system to wait longer to make discharge decisions, improving judgment accuracy while maintaining reliable article transfer.

Inventive Principle:
Principle #13The other way round (Inversion)

2Measurement precision

If the discharge unit is disposed within the robot movable range, then judgment precision is improved, but the article conveyance distance increases

Engineering Contradiction:
Improvedischarge judgment precisionVSAvoidarticle conveyance distance
Core Design Contradiction:
Measurement precisionVSLength of moving object

Solution Approach 1:

The patent positions the discharge unit at the downstream end within the robot's movable range, utilizing the spatial dimension effectively. This arrangement extends the observation period for article transfer feasibility without significantly increasing the overall system footprint, as the discharge unit leverages the existing robot workspace volume.

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

3Measurement precision

If the robot movable range is extended to accommodate the discharge unit, then discharge judgment accuracy improves, but device complexity increases

Engineering Contradiction:
Improvearticle position detection accuracyVSAvoidrobot movable range requirement
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The robot's movable range is designed to serve dual purposes: both article transfer and discharge unit access. By positioning the discharge unit within the existing robot workspace, the system eliminates the need for separate mechanisms or extended ranges, maintaining device simplicity while achieving precise discharge judgment.

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

Data Source

PatentEP3693298B1Article accumulating apparatus
Publication Date: 2025.12.31 ISHIDA CO LTD
  • EP3693298B1 patent drawingFigure 1~2
  • EP3693298B1 patent drawingFigure 3A~3C
  • EP3693298B1 patent drawingFigure 4A~4C

AI summary

An article accumulating apparatus that uses a robot (30) to transfer to a predetermined location and accumulate an article conveyed thereto is disclosed. The article accumulating apparatus includes a conveyance unit (10), an accumulation unit (20), and a discharge unit (40). The conveyance unit (10) is configured to convey the article. The accumulation unit (20) is disposed in series with the conveyance unit (10) and is configured to accumulate the article. The discharge unit (40) is configured to discharge the article in the conveyance unit (10) to an area outside the accumulation unit (20). The discharge unit (40) is disposed in a robot (30) movable range that is a range in which the robot (30) holds and transfers the article to the accumulation unit.