Radiographic Inspection Reject Bin Segmentation
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Solution Overview
Problem
In existing in-line radiation inspection systems, the reject bin typically obstructs the path for removing and replacing the conveyor belt, requiring dismantling of other parts or machine downtime to access the belt for cleaning and maintenance from the same side as the reject bin, which complicates maintenance and reduces productivity.
Innovation Solution
The system features a separation gap between the reject bin top and bottom, allowing the conveyor belt to be removed from the enclosure cabinet without dismantling the reject bin, with a conveyor access door that provides unobstructed access from the front side and is designed to prevent radiation leakage, and includes an electrical interlock for safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the reject bin is configured as an expanded lateral portion of the outfeed compartment, then space utilization is improved and the footprint is compacted, but the conveyor belt removal path is obstructed requiring dismantling of other parts or machine downtime
Solution Approach 1:
The reject bin is segmented into two distinct parts: a reject bin top portion that remains integrated with the outfeed compartment for space-efficient compact layout, and a reject bin bottom portion that can be independently removed. This segmentation allows the conveyor belt to be accessed and removed from the front side without dismantling the entire reject bin assembly, resolving the contradiction between compact space utilization and ease of belt removal.
Solution Approach 2:
The reject bin bottom portion is extracted as a separable component that can be removed independently from the reject bin top portion. This extraction creates an unobstructed path for conveyor belt removal from the front side while maintaining the compact integrated structure of the reject bin top portion with the outfeed compartment, thus improving both ease of operation and space utilization.
2Ease of repair
If the conveyor access door is positioned on the front side for easy belt access, then ease of maintenance is improved, but radiation leakage risk increases without proper shielding
Solution Approach 1:
A radiation-shielding curtain is introduced as an intermediary element between the radiation source and the conveyor access door area. This shielding curtain acts as a mediator that allows the conveyor access door to be positioned on the front side for easy maintenance access while preventing radiation leakage to the operator's side, thus resolving the contradiction between ease of repair and radiation safety.
3Ease of repair
If the conveyor belt is made of flexible polymer material for easy cleaning and replacement, then ease of maintenance is improved, but the belt tensioning and support structure becomes more complex
Solution Approach 1:
The conveyor belt is designed with dynamic tensioning capabilities, allowing it to be easily tensioned and detensioned. The tensioning mechanism is designed to work in conjunction with the flexible polymer belt material, enabling easy cleaning and replacement operations while maintaining appropriate tension during operation. This dynamic approach simplifies maintenance procedures without requiring overly complex support structures.
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
Enables easy access and removal of the conveyor belt from the same side as the reject bin without machine downtime, ensuring efficient maintenance and operation while maintaining radiation safety and compliance with regulatory standards.
Implementation Method 1
an X-ray generator is arranged at some distance above the conveyor belt, while a radiation detector is arranged immediately underneath the top portion of the conveyor belt... an article travelling on the conveyor belt is traversed by the radiation from the radiation generator above the belt, and the rays transmitted by the article and the belt are received by the radiation detector below the top section of the belt
Implementation Method 2
the interior passages from the infeed compartment to the radiation inspection compartment and from the radiation inspection compartment to the outfeed compartment, as well as the exit from the outfeed compartment are protected by shielding curtains... containing a radiation-blocking component such as lead oxide or tungsten
Data Source
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AI summary
An X-ray inspection system (1) includes a support structure (4), an enclosure cabinet (5) with an infeed opening (8) and an outfeed opening (26), a conveyor belt (10) running in a closed loop around rollers (27, 28, 29, 30) that are supported by a conveyor bed (35). The enclosure cabinet (5) and the conveyor bed (35) are connected to the support structure (4) only on a rear side (3) of the X-ray system (1), while a reject bin (14) and a conveyor access opening (43) with a conveyor access door (19) are arranged on the front side. According to the invention, the reject bin (14) is split into a reject bin top (15) and a reject bin bottom (16) along a separation gap (17) which is arranged at the level of a transport section (21) of the conveyor belt loop (10) and runs uninterrupted from the outfeed opening (26) to the conveyor access opening (43) which, in turn, continues uninterrupted to the infeed opening (8) so that, after the conveyor access door (19) has been opened and a tensioning mechanism (32) has been released, the conveyor belt (10) can be taken out of the enclosure cabinet (5) by sliding the transport section (21) through the separation gap (17) and the conveyor access opening (43) and simultaneously slipping a return section (22) of the conveyor belt loop (10) around the reject bin bottom (16).