Conveyor Loading System for Uniform Metallic Item Distribution

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Solution Overview

Problem

Current loading systems for continuous ovens result in imbalanced and inefficient distribution of metallic items, leading to inadequate treatment due to uneven loading and potential overlap, which affects the heating and drying processes.

Innovation Solution

A loading system comprising a first conveyor belt and a second conveyor belt arranged perpendicularly, with a mobile anti-falling retaining wall and a pneumatic actuator, ensures balanced distribution by unloading items onto the second belt and then into boxes, minimizing overlap and optimizing item placement within the oven.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If items are unloaded directly from a basket or another transportation carrier onto the conveyor belt, then the loading process is simple and fast, but the distribution of items on the conveyor belt is approximate and results in imbalanced filling of boxes

Engineering Contradiction:
Improveloading speedVSAvoiddistribution uniformity
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

A vibratory conveyor belt is introduced as an intermediary device between the unloading end of the first conveyor belt and the boxes. This intermediate vibratory conveyor receives items from the first conveyor belt and distributes them uniformly across multiple boxes through vibration, thereby achieving both efficient loading and balanced distribution without requiring manual intervention

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The second conveyor belt is designed to vibrate, creating mechanical oscillations that cause items to spread out and distribute evenly across the conveyor belt surface and into the boxes. The vibration frequency and amplitude are controlled to optimize the distribution effect, ensuring that items are evenly dispersed rather than clustered in imbalanced patterns

Inventive Principle:
Principle #18Mechanical vibration

2Manufacturing precision

If items are loaded in substantially equivalent quantities in all boxes, then the distribution quantity is balanced, but the items are positioned inside boxes in an inconvenient manner for heating treatment, resulting in insufficient treatment of some items

Engineering Contradiction:
Improvedistribution uniformityVSAvoidtreatment effectiveness
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The system ensures that each box receives items with appropriate spatial arrangement and orientation suitable for its specific heating treatment requirements. The vibratory conveyor allows items to be distributed not only uniformly in quantity but also in proper positioning within each box, creating locally optimized conditions for heat exchange and treatment effectiveness in different regions of the oven

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The vibration of the second conveyor belt prevents items from overlapping or piling up in inconvenient positions. The oscillating motion distributes items in a way that ensures adequate spacing and orientation within each box, allowing heat to penetrate uniformly to all items during the heating treatment process

Inventive Principle:
Principle #18Mechanical vibration

3Device complexity

If a single conveyor belt is used for loading, then the device complexity is low, but the item distribution is approximate and overlap occurs

Engineering Contradiction:
Improveconveyor system simplicityVSAvoiditem distribution precision
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The loading system is divided into two distinct conveyor belt segments: the first conveyor belt for efficient item transport and the second vibratory conveyor belt for precise distribution. This segmentation allows each component to perform its specialized function optimally - the first belt handles bulk transport while the second belt ensures precise, overlap-free distribution into boxes

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3392587B1Loading system for continuous ovens particularly for the treatment of metallic items and continuous oven comprising such a system
Publication Date: 2020.06.17 LM IND SRL
  • EP3392587B1 patent drawingFigure 1
  • EP3392587B1 patent drawingFigure 2~3
  • EP3392587B1 patent drawingFigure 4

AI summary

The present invention refers to a loading system (10) for continuous ovens particularly for the treatment of metallic items, characterised in that it comprises: a first conveyor belt (11) for advancing items to be treated in a first direction (X) towards an unloading end (13) of the same first conveyor belt (11); means (14) for the alternate translation of said first conveyor belt (11) in said first direction (X); a second conveyor belt (15) for advancing items to be treated in a second direction (Y) transversal with respect to said first direction (X), said second conveyor belt (15) being positioned below said unloading end (13) of said first conveyor belt (11) in an operative step of the same first conveyor belt (11); a mobile anti-falling retaining wall (16), positioned transversally to said second conveyor belt (15) and close to an unloading end (17) of said second conveyor belt (15); means (18) for the movement of said mobile anti-falling retaining wall (16) between a lowered configuration, for holding items to be treated on said second conveyor belt (15), and a raised configuration adapted for allowing the passage of said items to be treated towards said unloading end (17) of said second conveyor belt (15); moving means (19) for said items to be treated, configured to transit below said unloading end (17) of said second conveyor belt (15).