Rotating Sieve Drum for Deformed Capsule Sorting
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Solution Overview
Problem
Medication capsules often deform during storage and transport, leading to non-round cross-sections that can clog packaging machine feed devices, necessitating manual inspection and potential overlooking of faulty capsules.
Innovation Solution
A fully automatic device featuring a metal sieve drum with radially inwardly flared bores and a rotating mechanism that separates capsules based on diameter deviations, ensuring reliable and hygienic sorting of defective capsules without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual inspection is used to remove deformed capsules, then operator flexibility is maintained, but productivity decreases and reliability deteriorates due to human error
Solution Approach 1:
The patent replaces manual mechanical inspection with an automated mechanical sorting system. The sieve drum with precisely engineered boreholes automatically separates deformed capsules from合格 capsules based on dimensional criteria, eliminating human intervention while maintaining consistent sorting performance.
Solution Approach 2:
The patent changes the inspection parameter from subjective visual assessment to objective dimensional measurement. By using boreholes of specific diameters in the sieve drum, the system automatically rejects capsules exceeding predetermined size limits, ensuring consistent and reliable sorting without operator variability.
2Reliability
If manual ejection of deformed capsules is performed, then operational simplicity is maintained, but reliability decreases due to uncertainty of overlooking faulty capsules
Solution Approach 1:
The patent substitutes manual detection with an automated mechanical sorting mechanism. The rotating sieve drum with precisely positioned boreholes continuously screens capsules, ensuring 100% detection of deformed capsules regardless of their position or degree of deformation, while maintaining high inspection speed.
Solution Approach 2:
The system performs self-service sorting without external intervention. The sieve drum automatically separates合格 and defective capsules based on their dimensional properties, with the mechanism itself providing both detection and separation functions, eliminating the need for manual inspection while ensuring complete detection accuracy.
3Productivity
If automated sorting is implemented, then productivity increases, but device complexity increases
Solution Approach 1:
The patent divides the sorting function into discrete, simple components: the sieve drum with patterned boreholes, the feeding mechanism, and the collection areas. This segmentation allows each component to perform its specific function independently, achieving automated sorting through simple, modular elements rather than complex integrated systems.
Solution Approach 2:
The patent uses a sieve drum with porous-like borehole structures to achieve sorting. The boreholes act as selective passages that automatically separate capsules based on size, using a simple porous-like structure rather than complex mechanical or electronic sorting mechanisms, thereby achieving automation with minimal device complexity.
4Reliability
If metal sieve drum is used, then hygiene standards are met and electrostatic neutralization is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise parameter ranges for borehole diameters (e.g., 4.0-4.5mm, 4.5-5.0mm) to balance manufacturing feasibility with effective sorting. These standardized parameter ranges ensure both hygiene compliance through metal construction and adequate sorting performance without requiring excessively tight tolerances that would be difficult to manufacture.
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 efficient, automatic recognition and removal of deformed capsules, preventing machine blockages and ensuring continuous operational reliability without the need for specialized personnel, while meeting pharmaceutical hygiene standards.
Implementation Method 1
a sieve drum (2) which can be rotated about an axis (2.2), for receiving the medication capsules (1) to be sorted, which is closed at the front by flanges (2.1) in the area of the outer circumference
Implementation Method 2
The sieve drum and the equipment connected to it are made of metal, preferably stainless steel, which makes it possible to easily meet the hygienic standards prescribed for the pharmaceutical sector in the long term and at the same time to achieve electrostatic neutralization of the drug capsules
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The device has a screen drum (2) for accommodating defective cylindrical medicament capsules (1) to be sorted, where the screen drum is rotatable around an axis. The screen drum is supported only in a region of an outer area on a roller (2.6). A funnel-shaped borehole (3) is extended radially inwardly, where the borehole is provided with an arbitrarily specified small diameter. The borehole is radially penetrated into a wall of the screen drum. An internal space is freely accessible by a front side and is closed by the screen drum.