Movable X-ray Shielding Cover for Sorting Zone Access

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Solution Overview

Problem

Existing X-ray inspection and sorting systems face challenges in combining reliable shielding against X-ray radiation with the need for easy access and maintenance, particularly in non-modular systems where inspection and sorting occur along a single transport belt.

Innovation Solution

The system features a housing cover and side cover that are movable between a covering position and a release position, allowing for lateral access to the sorting zone and facilitating cleaning and belt removal without the need for dismounting components. This design ensures continuous shielding during operation while providing convenient access when needed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a housing cover provides shielding against X-ray radiation in the sorting zone, then radiation protection is improved, but access for cleaning and maintenance deteriorates

Engineering Contradiction:
ImproveX-ray radiation shieldingVSAvoidAccess for cleaning and maintenance
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The housing cover is made movable between a closed position for radiation shielding during operation and an open position for access during maintenance and cleaning. This dynamic configuration allows the same component to serve both radiation protection and maintenance access functions at different times.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The housing cover is divided into multiple separable sections (front cover, side covers, rear cover) that can be independently opened or removed. This segmentation allows selective access to different zones of the sorting mechanism while maintaining shielding in other areas during operation.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If the transport belt is fixed in position for stable operation, then operational stability is improved, but ease of belt removal and replacement deteriorates

Engineering Contradiction:
ImproveOperational stability of transport beltVSAvoidBelt removal and replacement
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The transport belt system incorporates movable support rollers and adjustable tensioning mechanisms that allow the belt to be easily removed and reinstalled. During operation, the belt is stabilized by fixed rollers and tensioning devices, but during maintenance, these components can be moved to facilitate belt removal.

Inventive Principle:
Principle #15Dynamics

3Device complexity

If the apparatus is designed as a non-modular integrated system, then device complexity is reduced, but adaptability for different inspection and sorting configurations deteriorates

Engineering Contradiction:
ImproveSystem integration levelVSAvoidConfiguration flexibility
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The integrated apparatus is divided into distinct functional modules (inspection zone, sorting zone, reject collection zone) that can be independently accessed and potentially reconfigured. The movable housing covers and modular support structures allow for flexible arrangement while maintaining overall system integration.

Inventive Principle:
Principle #1Segmentation

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 solution enables safe and efficient operation by maintaining shielding during use while allowing for easy maintenance and belt replacement, enhancing the overall usability and reliability of the inspection and sorting apparatus.

Implementation Method 1

the cover provides shielding against X-ray radiation, including stray radiation

Methodology Applied
Scientific EffectX-ray radiation shielding: Absorption (EM radiation)

Implementation Method 2

the space behind such opening needs also to be protected, that is along at least part of the rejection path the rejected items take on their way to f.i. a rejection bin collecting rejected items

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentEP4406668B1Inspection and sorting apparatus
Publication Date: 2025.04.30 METTLER TOLEDO SAFELINE X RAY
  • EP4406668B1 patent drawingFigure 1
  • EP4406668B1 patent drawingFigure 2
  • EP4406668B1 patent drawingFigure 3

AI summary

The invention relates to an inspection and sorting apparatus, comprising a support frame supporting a transport mechanism with an endless transport belt extending along an inspection zone in which items transported on the transport belt along a transport path are inspected by an inspection mechanism and along a sorting zone in which items to be rejected are sorted out by being moved, by a sorting mechanism, out of the transport path in a direction transverse to the transport path to a sorting side, wherein, in an operation state of the apparatus, a space lateral to and alongside the sorting zone, into which the rejected items are moved, is covered by a housing cover but is open to the sorting zone and to the downside to allow the rejected items to further fall or slide down by gravity and/or the apparatus is provided with a side cover covering a region below the sorting zone laterally from the sorting side, wherein the housing cover and/or the side cover is movable between its/their covering position in the operation state of the apparatus and a release position granting lateral access to the sorting zone and/or to said region from the sorting side.