Combination Weighing Radiation Feeder Balancing Through Hopper Selection
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Solution Overview
Problem
Conventional combination weighing apparatuses suffer from unbalanced article distribution among radiation feeders, leading to reduced operation rates due to oversupply or undersupply issues.
Innovation Solution
A combination weighing apparatus with a distribution unit, radiation feeders, hoppers, weight measurement units, and a controller that adjusts hopper discharge based on measured weights and feeder supply levels to balance article distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional radiation feeders are controlled based on article accumulation amount only, then the system structure remains simple, but unbalanced supply causes oversupply or undersupply leading to combination failure and reduced operation rate
Solution Approach 1:
The patent implements feedback control by having the controller continuously acquire article accumulation amounts from all radiation feeders, compare them against target values, and adjust discharge amounts dynamically. This closed-loop feedback mechanism balances article distribution across feeders, preventing both oversupply and undersupply conditions that would otherwise cause combination failures and reduce operation rate.
Solution Approach 2:
The control system dynamically adjusts the discharge amount of each radiation feeder based on real-time article accumulation levels. When a feeder has excessive accumulation, its discharge is increased; when accumulation is low, discharge is reduced. This dynamic adjustment allows the system to adapt to varying supply conditions and maintain balanced distribution, improving operation rate without requiring complex hardware changes.
2Stability of the object's composition
If preferential discharge selection is implemented to balance article distribution, then balanced supply is achieved, but the control logic becomes more complex
Solution Approach 1:
The controller performs preliminary assessment of article accumulation amounts in all radiation feeders before making discharge decisions. By evaluating the current state of each feeder in advance and identifying which feeders have excessive or insufficient accumulation, the controller can proactively adjust discharge patterns to prevent imbalances from developing, thereby maintaining stable article distribution across the system.
Solution Approach 2:
The control system applies different discharge strategies to different radiation feeders based on their individual article accumulation levels. Feeders with high accumulation receive preferential discharge selection, while feeders with low accumulation are discharged less frequently. This localized, differentiated control approach balances article distribution across the system without requiring complete redesign of the overall control architecture.
Data Source
AI summary
In a combination weighing apparatus 1, a controller 40 specifies a radiation feeder 31 to 3n being oversupplied with articles M on a basis of information acquired by an acquisition unit 30, and preferentially selects a hopper 51 to 5n corresponding to the specified radiation feeder 31 to 3n as a hopper from which the articles are to be discharged.