Pharmaceutical Article Transfer with Prepositioned Reject Units
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Solution Overview
Problem
Existing apparatuses for transferring pharmaceutical articles into containers risk rejecting intact articles due to the aspiration of adjacent articles during the rejection of defective ones, leading to complications and reduced productivity.
Innovation Solution
The apparatus employs a reject unit with a maneuvering space and a reject unit that translates between two positions to selectively divert defective articles away from the conveyor conduit, using a detection unit to ensure only intact articles are transferred into containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a covering element is used to reject defective articles by covering the upper opening of the conveying channel, then defective articles can be prevented from entering the container, but the aspiration process may inadvertently aspirate adjacent intact articles leading to false rejection
Solution Approach 1:
The reject unit is divided into separate functional components: a blocking element that seals the conveying channel opening and a suction element that removes defective articles. This segmentation allows the blocking element to prevent defective articles from entering the container while the suction element handles only the identified defective articles, preventing adjacent intact articles from being falsely rejected.
Solution Approach 2:
The detection unit identifies defective articles before they reach the reject unit, allowing the blocking element to be positioned in advance to seal the conveying channel opening. This preliminary action ensures that only defective articles are diverted while intact articles continue to the container without interruption.
2Reliability
If the covering element is moved to the active position to cover the upper opening, then defective articles can be rejected, but the conveyor must be halted to prevent aspirating adjacent intact articles
Solution Approach 1:
The blocking element is positioned in advance to seal the conveying channel opening before the suction element activates. This preliminary positioning ensures that when defective articles are aspirated, adjacent intact articles cannot be inadvertently drawn into the suction element, eliminating the need to halt the conveyor while maintaining rejection accuracy.
Solution Approach 2:
The blocking element acts as an intermediary between the conveying channel and the suction element. By sealing the opening, it prevents direct interaction between the suction flow and adjacent intact articles, allowing continuous conveyor operation without false rejection of good articles.
3Reliability
If the suction element is activated to aspirate defective articles, then rejection is achieved, but adjacent intact articles may be aspirated causing false rejection and productivity loss
Solution Approach 1:
The reject unit separates the blocking function and suction function into distinct elements. The blocking element seals the conveying channel opening while the suction element removes only defective articles. This segmentation creates a controlled aspiration zone that prevents adjacent intact articles from being drawn into the suction element, maintaining both rejection accuracy and productivity.
Solution Approach 2:
The blocking element serves as an intermediary structure that confines the suction flow to only affect defective articles. By positioning the blocking element to seal the conveying channel opening, it creates a physical barrier that prevents the suction force from extending to adjacent intact articles, thereby eliminating false rejection while maintaining effective defective article removal.
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
Ensures rapid and effective rejection of defective articles without affecting intact ones, maintaining productivity by avoiding the need for halting the conveyor and external suction, thus ensuring accurate transfer.
Implementation Method 1
a vibrating conveyor (1) comprising a series of transport channels (11) which receive the pharmaceutical articles (F) from a feed hopper and are destined to transport, through a vibrating motion, the pharmaceutical articles (F)
Implementation Method 2
when a pharmaceutical article, due to the vibrating motion of the transport channels of the vibrating conveyor, passes beyond the end of the transport channel, it falls by force of gravity in a downwards direction
Implementation Method 3
a reject unit that translates between two positions to selectively divert defective articles away from the conveyor conduit
Data Source
AI summary
The apparatus for transferring pharmaceutical articles internally of containers with rejection of defective pharmaceutical articles, comprises: a series of transport channels for conveying pharmaceutical articles into a fall zone; at least a detection unit of the intactness of the pharmaceutical articles; a series of conveying conduits in the fall zone each arranged with the respective upper inlet opening inferiorly of the end of the transport channels defining a manoeuvring space comprised between the end of the transport channels and the upper inlet opening of the conveyor conduit. For each transport channel and each respective conveyor conduit, a reject unit is arranged in the manoeuvring space and positionable in either of first or second operating positions. In the first operating position, pharmaceutical articles are recognised as intact to fall into the conveyor conduit leading toward a container. In the second operating position, pharmaceutical articles are recognised as defective.