Sheet Material Measuring Device with Push Contact Member
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Solution Overview
Problem
Conveying thin sheet materials with weak elasticity through a conveyance route with roller pairs often results in damage or conveyance jams due to the inability to maintain posture and potential contact with obstacles, leading to reduced productivity.
Innovation Solution
A measuring device with a push contact member that moves orthogonally to the sheet material's surface to bring it into contact with a physical property value detector, stopping and starting conveyance to detect properties at multiple positions, thereby minimizing damage and jam occurrence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thin sheet material is conveyed through roller pairs, then the sheet material can be transported to the detection position, but the sheet material cannot maintain its posture and may hit obstacles or jam, causing damage and reduced productivity
Solution Approach 1:
The push contact member performs preliminary action by pushing the sheet material before it reaches the detection position, ensuring proper contact and posture. This preventive measure avoids mid-conveyance instability that could lead to jams or damage, thus maintaining reliability while enabling continuous conveyance for productivity.
Solution Approach 2:
The push contact member acts as an intermediary between the conveyance system and the sheet material. It provides the necessary mechanical intervention to ensure proper sheet material positioning and contact with the detection position without requiring continuous conveyance interruption, resolving the contradiction between reliable handling and productive flow.
2Measurement precision
If the sheet material is pushed to contact the detection position, then detection accuracy is improved, but the sheet material may be damaged or jammed due to weak elasticity
Solution Approach 1:
The push contact member performs preliminary positioning of the sheet material before detection occurs. By ensuring proper contact and posture in advance, accurate detection is achieved without requiring excessive pushing force during the detection process itself, thereby preventing damage to the weak elastic sheet material.
Solution Approach 2:
The push contact member is designed to be movable and adaptable, allowing it to apply just the right amount of force dynamically. This dynamic adjustment ensures sufficient contact for accurate detection while avoiding over-compression that could damage the sheet material, resolving the contradiction between measurement precision and harm prevention.
3Productivity
If continuous conveyance is maintained, then productivity is improved, but detection accuracy deteriorates due to varying positional relationships between the detector and sheet material
Solution Approach 1:
The push contact member performs preliminary action to position the sheet material correctly before it reaches the detection position. This ensures that even during continuous conveyance, the sheet material maintains a constant and optimal positional relationship with the detector, thereby preserving measurement precision while enabling continuous operation for high productivity.
Solution Approach 2:
The push contact member enables the sheet material to self-position correctly as it passes through the conveyance system. By providing this self-positioning capability, the system maintains accurate detection conditions during continuous conveyance without requiring external intervention or interruption of the conveyance flow.
Data Source
AI summary
A measuring device, includes a physical property value detector and a push contact member that pushes to bring a sheet material in contact with the physical property value detector; and further includes a first processor that stops conveyance of the sheet material, pushes to bring the sheet material in contact with the physical property value detector, and detects a physical property value of the sheet material; a second processor that, after having detected the physical property value, cancels the pushing by the push contact member, separates the sheet material from the physical property value detector, and starts conveyance of the sheet material; and a physical property value specifier that specifies the physical property value on a basis of physical property values of a plurality of positions within a surface of the sheet material detected by executing the first processing and the second processing repeatedly.