Tablet Printing Apparatus Defective Product Separation
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Solution Overview
Problem
The existing tablet printing apparatus fails to completely remove defective products from the collection belt, resulting in them being mixed with good products in the same collection box, leading to contamination and inefficiencies in the manufacturing process.
Innovation Solution
A tablet printing apparatus is designed with a carrying belt, a printing head, an inspection unit, a good product collecting device, a defective product collecting device, a detecting unit, and a re-inspection product collecting device, which ensures that defective products are accurately identified and separated from good products through a combination of sensors and mechanical mechanisms to prevent mixing during the collection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air blowing is used to remove defective tablets from the belt, then defective tablets can be removed from the carrying belt, but defective tablets may not be completely removed and remain on the belt, leading to mixing with good products in the collection box
Solution Approach 1:
A detecting unit is introduced as an intermediary between the defective product collecting device and the good product collecting device. This detector monitors whether defective tablets have been successfully removed from the belt, providing feedback information that prevents good tablets from being contaminated by remaining defective tablets, thus resolving the contradiction between removal completeness and collection efficiency
Solution Approach 2:
The detecting unit provides real-time feedback on the presence of defective tablets on the carrying belt. Based on this feedback, the system can adjust its operation to ensure complete removal of defective tablets before good tablets are collected, eliminating the mixing issue while maintaining productivity
2Device complexity
If a single collection box is used for both good and defective products, then the device complexity is reduced, but product purity is compromised due to mixing of defective tablets with good products
Solution Approach 1:
The collection system is segmented into two separate collection boxes: one for good products and one for defective products. This segmentation is controlled by the detecting unit that identifies whether tablets are defective or good, ensuring complete separation and preventing mixing, thus resolving the contradiction between device simplicity and product separation accuracy
Solution Approach 2:
Different collection locations are assigned different qualities/functions: the first collection box is designated for good products while the second is for defective products. This local differentiation ensures that each tablet is directed to the appropriate collection location based on its quality status, maintaining product purity without excessive complexity
Data Source
AI summary
A tablet printing apparatus 1 includes an inspection unit 53 determining whether or not the printed tablet T is good product, a good product collecting device 43 collecting the tablet T of the good product from the carrying belt 31a, a defective product collecting device 41 collecting the tablet other than the good product from the carrying belt 31a, a discharge confirming sensor 41c detecting whether or not the tablet other than the good tablet is collected by the defective product collecting device 41, and a re-inspection product collecting device 42 collecting the tablet T other than the good product from the carrying belt 31 a when a collecting operation for collecting the tablet T other than the good product is performed by the defective product collecting device 41, and the discharge confirming sensor 41c detects that the tablet T other than the good tablet is not collected.