Sheet Manufacturing Cleaning Roller Impact Mechanism
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Solution Overview
Problem
Existing sheet manufacturing apparatuses face challenges in maintaining the cleaning ability of calender rollers due to the accumulation of paper dust, which reduces the effectiveness of the cleaning mechanism, leading to contamination and defects in the manufacturing process.
Innovation Solution
The apparatus incorporates a cleaning unit with a cleaning roller, a blade unit, and a hammer unit, where the cleaning roller cleans the processing roller, the blade unit cleans the cleaning roller, and the hammer unit applies an impact to the blade unit to maintain cleanliness by removing accumulated paper dust.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a felt roller is used to clean the calender roller, then the cleaning ability is initially effective, but the cleaning ability deteriorates over time due to accumulation of paper dust on the felt roller and remover
Solution Approach 1:
The cleaning mechanism is divided into multiple functional components: a felt roller for initial cleaning, a remover for transferring dust, and a blade unit for final cleaning of the remover. This segmentation allows each component to specialize in a specific cleaning task, preventing any single component from becoming overloaded with accumulated dust, thereby maintaining cleaning effectiveness over extended periods.
Solution Approach 2:
The remover acts as an intermediary component between the felt roller and the calender roller. It receives paper dust from the felt roller and transfers it to the blade unit for final removal. This intermediary function prevents direct contact between the felt roller and the calender roller surface, reducing wear and maintaining cleaning ability by continuously removing accumulated dust through the blade unit's cutting action.
2Reliability
If paper dust accumulates on the remover, then the cleaning ability of the remover decreases, but adding more cleaning components increases device complexity
Solution Approach 1:
The blade unit serves multiple functions: it cleans the remover surface, removes accumulated paper dust, and maintains the effectiveness of the entire cleaning mechanism. By merging the cleaning and dust removal functions into a single component, the system achieves high reliability without proportionally increasing device complexity.
Solution Approach 2:
The cleaning mechanism is designed to self-maintain through its own components working together. The felt roller continuously contacts the calender roller to pick up dust, the remover transfers this dust, and the blade unit automatically cuts and removes accumulated dust from the remover surface. This self-service operation eliminates the need for external intervention or complex control systems to maintain cleaning effectiveness.
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 effectively maintains the cleaning ability of the rollers, preventing paper dust accumulation and ensuring consistent quality in the manufacturing process by continuously cleaning the processing rollers and their respective cleaning units.
Implementation Method 1
the control unit is configured to cause the hammer unit to apply an impact to the blade unit
Data Source
AI summary
A sheet manufacturing apparatus includes a processing roller configured to process a web containing fibers, a cleaning unit including a cleaning roller unit, a blade unit, and a hammer unit, and a control unit. The cleaning roller unit is configured to clean the processing roller, the blade unit is configured to clean the cleaning roller unit, and the control unit is configured to cause the hammer unit to apply an impact to the blade unit.