Tablet Splitting Apparatus with Opposed Blades
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Solution Overview
Problem
Existing tablet splitting apparatuses often produce unwanted fragments during the cutting process, leading to fluctuations in the weight of split tablet pieces, which can cause anxiety and result in increased medicine wastage due to undesirable splitting.
Innovation Solution
A tablet splitting apparatus with a holding mechanism and a cutting mechanism featuring opposed blades that displace from a standby to a completion position, with a cutting operation regulating section to control the cutting process, ensuring minimal weight fluctuations by stabilizing the split line and reducing reaction forces during cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single blade is pressed vertically onto the tablet to cut it, then the cutting operation is simple and convenient, but unwanted fragments are produced and weight fluctuations increase
Solution Approach 1:
The single blade cutting mechanism is segmented into a pair of opposing blades that move in coordinated fashion. One blade remains stationary while the other moves to cut the tablet, dividing the cutting action into two opposing forces rather than one vertical press, thereby reducing fragments and improving weight consistency
Solution Approach 2:
Instead of pressing the tablet down onto a stationary blade (vertical pressing), the cutting approach is inverted by having the blade move horizontally against the tablet while it remains held in place. This reverses the direction of cutting force and eliminates the fragmentation caused by vertical compression
2Stability of the object's composition
If the holding mechanism holds the tablet firmly during cutting, then the tablet position is stable, but reaction forces cause crack curvature and weight fluctuations
Solution Approach 1:
The holding mechanism is extracted or removed from the cutting zone during the actual cutting operation. The tablet is held stable during positioning but is released or loosened during cutting to eliminate reaction forces that would otherwise cause crack curvature and weight fluctuations
Solution Approach 2:
The holding mechanism transitions from a static firm hold to a dynamic state during cutting. The holding force is adjusted or released temporarily during the cutting operation to allow the tablet to move freely without reaction forces, then restored afterward to maintain stability
3Device complexity
If a single cutter blade is used to cut the tablet, then the apparatus structure is simple, but the frequency of undesirable splitting exceeds allowable ranges
Solution Approach 1:
The single cutter blade is segmented into a pair of opposing blades working in coordination. This division of the cutting function into two opposing actions improves cutting accuracy and reduces undesirable splitting, with the added complexity being minimal since one blade remains stationary
Data Source
AI summary
A tablet splitting apparatus capable of reducing fluctuations in weight of split tablet pieces even with simple advanceable-retractable blades is provided. A holding mechanism holds a tablet to be split at a cutting position. In reducing the gap between a pair of opposed blades, which are advanced and retracted with respect to the cutting position, to cut the tablet, the holding mechanism continuously holds the tablet until the tablet is caught between the pair of opposed blades of a cutting mechanism. After the tablet is caught between the pair of opposed blades, the holding mechanism release the tablet and only the pair of opposed blades hold the tablet. The opposed blades are caused to cut into the tablet after the holding mechanism releases the tablet, preventing a crack caused in the tablet ahead of the opposed blades from being curved or increased.