Sheet Manufacturing Apparatus with Container Quality Verification
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Solution Overview
Problem
The quality of manufactured sheet-shaped recycled paper is deteriorated when the characteristics of coarsely crushed pieces, such as shape, size, thickness, basis weight, and paper quality, are inappropriate.
Innovation Solution
A sheet manufacturing apparatus that includes a container loading section with an information carrying section to convey characteristics of coarsely crushed pieces, a reading section to read this information, a determination section to assess the suitability of the pieces as raw material, and a switching section to control the loading of unsuitable containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If coarsely crushed pieces are transported and filled into the reserving section, then the sheet manufacturing process can be maintained, but the quality of the manufactured sheet deteriorates when the characteristics of the coarsely crushed pieces are inappropriate
Solution Approach 1:
The system performs preliminary verification of coarsely crushed pieces characteristics before they are filled into the reserving section. The determination section checks shape, size, thickness, basis weight, and paper quality in advance, and the switching section prevents loading of unsuitable pieces, ensuring only appropriate materials enter the manufacturing process.
Solution Approach 2:
The system implements feedback control by reading information about coarsely crushed pieces characteristics, determining their suitability, and using this information to control the loading process. The switching section provides feedback by allowing or blocking container loading based on the determination results, creating a closed-loop quality control system.
2Manufacturing precision
If an information carrying section is added to containers to convey characteristics of coarsely crushed pieces, then the quality control capability is improved, but the device complexity increases
Solution Approach 1:
The information carrying section on containers serves as an intermediary that bridges the gap between the coarsely crushed pieces and the determination section. It conveys characteristics information without requiring direct physical measurement of each piece, simplifying the verification process while maintaining quality control.
Solution Approach 2:
The system replaces complex mechanical measurement systems with an information-based approach. Instead of physically measuring each coarsely crushed piece's characteristics, the system uses information carried on containers to determine suitability, reducing mechanical complexity while maintaining control precision.
Data Source
AI summary
A sheet manufacturing apparatus that manufactures a sheet-shaped recycled paper using coarsely crushed pieces obtained by coarsely crushing a sheet containing fibers as a raw material, includes a container loading section that is configured to load a container in which the coarsely crushed pieces are housed and which has an information carrying section for carrying information related to characteristics of the housed coarsely crushed pieces, a reading section that reads the information carried by the information carrying section, a determination section that determines whether or not the coarsely crushed pieces in the container are suitable as the raw material for sheet manufacturing by the sheet manufacturing apparatus based on the information read by the reading section, and a switching section that switches between a first state in which the container is configured to be loaded into the container loading section and a second state in which the container is prevented from being loaded into the container loading section according to a determination result of the determination section.