Sequential Component Dosing for Tolerance-Based Ratio Correction
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Solution Overview
Problem
Existing dosing methods for mixtures often result in inaccurate component ratios due to tolerances, leading to potential overdosing and inefficiencies, especially when dealing with fine-grained or poorly flowing substances like medicinal substances.
Innovation Solution
A method that adjusts the dosing of multiple components by metering the target component to a precise target value and post-dosing additional components to lower target values, allowing for real-time correction based on actual weights and tolerance ranges to maintain desired ratios, thereby preventing overdosing and ensuring accurate mixture composition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all components are dosed to their target values simultaneously, then the dosing process is simple and fast, but the component ratios may deviate from target due to tolerances and weighing inaccuracies
Solution Approach 1:
The dosing process is segmented into sequential steps: first dosing the target component to its full target value, then dosing additional components to reduced target values. This segmentation allows independent control of each component's dosing, enabling correction of ratio deviations without redosing the target component.
Solution Approach 2:
The target component is dosed to its full target value in advance before dosing the additional components. This preliminary action establishes a fixed reference point, and subsequent components are dosed at reduced levels to accommodate any variations in the target component's actual weight, thereby maintaining accurate ratios.
2Manufacturing precision
If a component is overdosed or underdosed beyond tolerance, the entire batch must be discarded and redosed, but this wastes material and reduces productivity
Solution Approach 1:
By segmenting the dosing process and dosing components sequentially rather than simultaneously, the system allows correction of dosing errors in additional components without affecting the target component. This eliminates the need to discard and redose entire batches when minor deviations occur.
Solution Approach 2:
Instead of discarding the entire batch when a dosing error occurs, the invention recovers the target component by keeping it in place and only adjusting the dosing of additional components. This recovers valuable material that would otherwise be wasted.
3Manufacturing precision
If the target component is dosed precisely to target value, then ratio accuracy is maximized, but any deviation requires redosing all components which is time-consuming
Solution Approach 1:
The dosing process is segmented so that the target component is dosed once to its full target value, and additional components are dosed subsequently at reduced levels. This segmentation means that if correction is needed, only the additional components need adjustment, not the target component, thereby reducing correction time.
Data Source
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AI summary
The invention relates to a method for dosing a target component (20), wherein a dosing system (10) doses the target component (20) to a target value (Z20), which corresponds to a desired nominal value (S20soll), wherein an additional dosing system (12) doses at least one additional component (21, 22, 23) to be follow-on dosed, to a target value (Z21) of the component (21, 22, 23) to be follow-on dosed which is lower than a desired nominal value (S21soll) of the component (21, 22, 23) to be follow-on dosed, wherein an actual value (G20ist) of the target component (20) and at least one actual value (G21ist) of the component (21, 22, 23) to be follow-on dosed are then determined, a content (A) of the target component (20) then being calculated according to the actual value (G20ist) of the target component (20) and/or the actual value (G21ist) of the component (21, 22, 23) to be follow-on dosed and the content (A) being compared to a limit value (T) or tolerance band (T), at least the component (21, 22, 23) to be follow-on dosed being additionally dosed in the event of the limit value (T) or tolerance band (T) being exceeded.