Sorting Drum With Groove-Interconnected Pockets To Prevent Occlusion

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Solution Overview

Problem

The existing drum-based sorting machines face issues where objects can get stuck in the openings of the pockets, causing occlusion and reducing the effectiveness of the sorting process as more openings become blocked over time.

Innovation Solution

A drum with a cylindrical shape featuring a plurality of pockets on its inner surface and grooves on the outer surface, where the grooves interconnect openings to facilitate the removal of stuck objects using a cleaning brush or blade, ensuring continuous operation and maintaining pocket capacity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If objects are received in pockets through openings on the drum surface, then sorting and characterization can be performed, but openings become occluded by stuck objects reducing productivity

Engineering Contradiction:
Improveobject characterizationVSAvoidsorting throughput
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The harmful effect of objects stuck in openings is extracted and removed by introducing a cleaning mechanism (brush or blade) that actively removes stuck objects from the openings, preventing occlusion and maintaining continuous operation

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

A cleaning brush or blade is introduced as an intermediary element between the drum surface and the objects, serving as a mediator to remove stuck objects from the openings without affecting the primary sorting function

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If pockets are provided with openings for object reception and light detection, then object characteristics can be detected, but openings jam with objects reducing reliability

Engineering Contradiction:
Improvespectral detectionVSAvoidcontinuous operation
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The cleaning mechanism performs preliminary action by removing objects from the openings before they can cause jamming or occlusion, preventing harmful effects before they occur and ensuring continuous reliable operation

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The cleaning mechanism converts the potentially harmful effect of stuck objects into a beneficial cleaning action, where the brush or blade deliberately contacts and removes objects that would otherwise cause jamming, transforming a problem into a solution

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

3Productivity

If the drum rotates continuously for sorting, then productivity is maintained, but openings become progressively occluded increasing loss of time

Engineering Contradiction:
Improvesorting rateVSAvoiddowntime for clearing jams
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The cleaning mechanism ensures continuity of useful action by continuously removing objects from the openings during drum rotation, preventing interruptions and maintaining uninterrupted sorting operation

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The drum system performs self-service through the integrated cleaning mechanism that automatically removes stuck objects during normal operation, eliminating the need for external intervention or downtime for clearing jams

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3038765B1Drum, a machine comprising such drum, and a method for drum and manufacturing of such drum
Publication Date: 2019.12.25 BOMIL AB
  • EP3038765B1 patent drawingFigure 1~2
  • EP3038765B1 patent drawingFigure 3
  • EP3038765B1 patent drawingFigure 4~5

AI summary

A drum (100) for sorting objects is provided. The drum has a cylindrical shape, and said drum (100) comprises a cylindrical body (101), with an inner and an outer envelope surface. A plurality of pockets (104) are arranged on the inner envelope surface of the cylindrical body (101), and said pockets (104) are provided with openings (105) opening up into the outer envelope surface. At least one groove (106) is arranged on the outer envelope surface, said groove (105) interconnecting at least two openings (105). A machine (1000) comprising such a drum (100) and a method for manufacturing such drum (100) are also provided.