Material Supply Device for Fiber Body Generation
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Solution Overview
Problem
Variations in the thickness and weight of used paper supplied to a recycling apparatus lead to fluctuations in the supply rate, causing instability in the quality of manufactured sheets due to time lags in weight measurement and discharge, resulting in uneven fiber distribution and sheet quality.
Innovation Solution
A material supply device with a weight measurement section and a supply amount adjustment mechanism that detects the weight of small fiber pieces and adjusts the supply rate in real-time, ensuring consistent fiber supply to downstream processes, preventing excess or deficiency and maintaining stable sheet quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If weight measurement and discharge control are performed with fixed thresholds, then the discharge port can be closed when target weight is reached, but time lag causes small pieces to be supplied during the closing process, leading to fluctuating supply amount
Solution Approach 1:
The control unit continuously monitors the weight increase rate and uses this feedback to dynamically adjust the discharge port closing timing. When the weight increase rate falls below a threshold, the control unit delays closing the discharge port until the weight reaches the target value, ensuring complete supply of small pieces and preventing supply fluctuations.
Solution Approach 2:
The system transitions from static fixed-threshold control to dynamic adaptive control. The discharge port closing decision is no longer based solely on fixed weight thresholds but is dynamically adjusted based on real-time weight increase rate monitoring, allowing the system to adapt to varying supply conditions and maintain consistent small piece supply.
2Productivity
If the discharge port is closed quickly when target weight is reached, then the supply process is efficient, but small pieces are not fully supplied due to time lag, causing weight deficiency
Solution Approach 1:
The control unit performs preliminary monitoring of the weight increase rate before closing the discharge port. By detecting whether the weight increase rate is below the threshold in advance, the system can proactively delay closing to ensure complete supply of small pieces, preventing weight deficiency while maintaining efficient operation.
Solution Approach 2:
The continuous feedback from weight rate monitoring allows the system to adjust the closing timing dynamically. When the weight increase rate indicates incomplete supply, the feedback mechanism delays closing until all small pieces are supplied, ensuring both completeness and efficiency.
3Device complexity
If fixed weight threshold is used for discharge control, then the control logic is simple, but variations in paper thickness cause fluctuating weight increase rates, leading to unstable sheet quality
Solution Approach 1:
The system incorporates feedback from weight increase rate monitoring to dynamically adjust discharge control. This feedback mechanism compensates for variations in paper thickness and other factors causing fluctuating weight rates, maintaining stable sheet quality while adding only minimal control complexity through automated rate-based timing adjustments.
Solution Approach 2:
The system changes the control parameter from fixed weight threshold to dynamic timing based on weight increase rate. By monitoring and responding to rate changes rather than relying on fixed thresholds, the system adapts to variations in material properties and maintains consistent discharge performance and sheet quality.
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 solution ensures stable and high-quality sheet production by accurately adjusting the supply amount of fibers based on real-time weight measurements, preventing uneven thickness and strength in the final product.
Implementation Method 1
a weight measurement section that detects a weight of the small piece supplied from the supply section to a receiving portion
Data Source
AI summary
A material supply device includes a supply section that supplies a small piece made of a material containing a fiber, a weight measurement section that detects a weight of the small piece supplied from the supply section to a receiving portion, and a supply amount adjustment section that adjusts a supply amount per unit time of the small piece supplied by the supply section, based on a detection result detected by the weight measurement section. The supply section has a storage portion that stores the small piece, an outlet that discharges the small piece from the storage portion, and a shutter that opens and closes the outlet.