Separate Frames for Sheet Manufacturing Apparatus Vibration Isolation
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Solution Overview
Problem
Existing sheet manufacturing apparatuses face challenges in maintaining accurate measurement of raw materials due to vibrations from defibration and compression units affecting the quantitative feeder's precision.
Innovation Solution
The apparatus incorporates a frame structure with separate units for the quantitative feeder and defibration units, along with a third frame that increases the distance between these units, thereby attenuating vibrations and improving measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the quantitative feeder and defibration unit are integrated in a single frame, then the device complexity is reduced, but the measurement precision deteriorates due to vibration propagation
Solution Approach 1:
The patent divides the apparatus into two separate frames: a first frame for the quantitative feeder and a second frame for the defibration unit. This segmentation isolates the vibration-sensitive measurement function from the vibration-generating defibration process, resolving the contradiction between structural simplicity and measurement precision.
Solution Approach 2:
The quantitative feeder is extracted from the defibration unit and placed on a separate frame. This extraction removes the harmful vibrations from the measurement environment, allowing high-precision measurement while maintaining operational simplicity through modular design.
2Measurement precision
If the distance between the quantitative feeder and defibration unit is increased, then the measurement precision is improved by reducing vibration impact, but the device complexity increases
Solution Approach 1:
By segmenting the apparatus into two separate frames with increased distance between them, the patent effectively isolates vibration sources while maintaining a relatively simple overall structure through modular configuration rather than complex isolation mechanisms.
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
This configuration enhances the measurement accuracy of the raw material by minimizing the impact of vibrations from the defibration and compression processes on the quantitative feeder, resulting in a more precise feeding and processing of materials.
Implementation Method 1
a first frame to which the quantitative feeder unit is fixed; and a second frame that is separated from the first frame and to which the defibration unit is fixed
Data Source
AI summary
A sheet manufacturing apparatus 1 includes a quantitative feeder unit 15 that measures a predetermined amount of a raw material C and feeds the measured raw material C, a defibration unit 31 that defibrates the raw material C fed from the quantitative feeder unit 15 into fibers, a third unit group 103 that deposits and compresses the fibers and forms the fibers into a sheet, a first frame F1 to which the quantitative feeder unit 15 is fixed, and a second frame F2 that is separated from the first frame F1 and to which the defibration unit 31 is fixed.