Rotary Tablet Drum Ejection Without Pressurized Air
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Solution Overview
Problem
Existing tablet dispensing apparatuses face challenges in precisely dispensing micro-tablets into containers at high speeds without using pressurized air, leading to contamination risks in aseptic environments and are cumbersome with complex components requiring frequent adaptations for varying production speeds.
Innovation Solution
A compact tablet dispensing apparatus with a cylindrical drum and internal ejection device using cam-actuated ejection elements that operate in continuous motion, ensuring precise tablet ejection into containers via grooves and conveyor means, while maintaining a sterile environment by containing components within a suctioned cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pressurized air ejection means are used to eject tablets from seats, then tablet ejection efficiency is improved, but contamination risk increases in aseptic environments
Solution Approach 1:
The harmful pressurized air ejection means are extracted and removed from the system. Instead, a mechanical ejection element is used that physically contacts and pushes the tablet out of the seat without introducing pressurized air into the aseptic environment, thereby eliminating the contamination risk while maintaining ejection efficiency.
Solution Approach 2:
A mechanical ejection element serves as an intermediary between the drive mechanism and the tablet. This intermediary component performs the ejection function through direct mechanical contact rather than through pressurized air, acting as a mediator that achieves tablet ejection without introducing harmful factors into the aseptic environment.
2Manufacturing precision
If multiple components (drum, wheel, pushers) are used for tablet dispensing, then dispensing precision is improved, but device complexity increases
Solution Approach 1:
Multiple separate components (drum, dispensing wheel, and pushers) are merged into a single integrated drum structure. The drum now incorporates both the tablet-holding seats and the ejection elements within its wall structure, eliminating the need for separate dispensing wheels and pusher mechanisms while maintaining precise tablet dispensing capability.
Solution Approach 2:
The drum is designed to perform multiple functions simultaneously: it rotates to present tablets, contains seats for holding tablets, and incorporates ejection elements for releasing tablets. This multi-functional design eliminates the need for separate specialized components for each function, reducing overall device complexity while maintaining dispensing precision.
3Adaptability or versatility
If multiple components and actuating means are used for tablet dispensing, then adaptability to production speeds is improved, but ease of repair worsens
Solution Approach 1:
Multiple separate components that required coordinated replacement are merged into a single integrated drum assembly. This simplifies maintenance and repair operations, as the drum can be serviced as a single unit rather than requiring disassembly and replacement of multiple interconnected components (drum, wheel, pushers) with their respective actuating means.
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
The apparatus achieves precise and efficient tablet dispensing at high speeds, reducing contamination risks and production costs, and is suitable for pharmaceutical use with a compact design.
Implementation Method 1
The seats of the tablets are in flow communication with the inside of the drum which is maintained in depression or negative pressure by suitable suction means so as to retain the tablets inside the seats during rotation of the drum.
Implementation Method 2
there are provided pneumatic ejection means capable of delivering pressurized air in the seats so as to eject from the latter the tablets
Data Source
AI summary
A tablet dispensing apparatus for dispensing tablets into containers includes a cylindrical drum having an inner cavity and a cylindrical side wall provided with a row of seats adjacent to each other along a circumference arc, each seat for accommodating a respective tablet, and an ejection device to interact with the seats at angular ejection positions of the drum to eject the tablets from the seats out of the drum. The side wall is provided internally with a groove extending along the circumference arc and communicating with the seats. The ejection device has an ejection element movable during rotation of the drum, at an angular ejection position thereof, in an operating position. The ejection element is slidably inserted in a groove and at least partially in the seats to push outwardly and eject the respective tablets from the seats while the drum rotates.