Thermal Fixing Roller Temperature Sensing for Sheet Lamination
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Solution Overview
Problem
Existing sheet laminators lack effective redundancy in temperature sensing, leading to potential failures and inconsistent temperature control during the lamination process, which can affect the adhesiveness of laminated sheets.
Innovation Solution
A sheet laminator with a thermal fixing roller pair, first and second heaters, multiple temperature detectors, and a driver, which ensures precise temperature control and redundancy by detecting surface temperatures at different positions along the rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single temperature sensor is used to detect the temperature of the thermal fixing roller, then the device complexity is reduced, but the reliability deteriorates because the system lacks redundancy and cannot continue operating if the sensor fails
Solution Approach 1:
The patent applies the principle of beforehand cushioning by configuring multiple temperature sensors (first and second temperature sensors) on the thermal fixing roller. This redundancy ensures that if one sensor fails, the other can continue to provide temperature detection, thereby cushioning against the potential failure and maintaining system reliability without requiring complex backup systems.
2Measurement precision
If multiple temperature sensors are arranged along the axial direction of the thermal fixing roller, then the measurement precision of temperature distribution is improved, but the device complexity increases due to additional sensors and their arrangement
Solution Approach 1:
The patent applies the principle of local quality by strategically positioning the first and second temperature sensors at different axial locations on the thermal fixing roller. This allows different regions of the roller to be monitored with appropriate sensor placement, achieving accurate temperature distribution measurement while avoiding unnecessary sensor proliferation that would increase complexity.
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 provides reliable temperature control and redundancy, ensuring consistent adhesiveness and quality of laminated sheets, even in the event of sensor failures.
Implementation Method 1
The first heater heats the first thermal fixing roller. The second heater heats the second thermal fixing roller.
Implementation Method 2
The multiple temperature detectors detect a surface temperature of each of the thermal fixing roller pair.
Implementation Method 3
The thermal fixing roller pair thermally fixes and conveys a two-ply sheet and a sheet medium nipped between two sheets of the two-ply sheet.
Data Source
AI summary
A sheet laminator includes a thermal fixing roller pair, a first heater, a second heater, multiple temperature detectors, and a driver. The thermal fixing roller pair includes a first thermal fixing roller and a second thermal fixing roller facing the first thermal fixing roller. The thermal fixing roller pair thermally fixes and conveys a two-ply sheet and a sheet medium nipped between two sheets of the two-ply sheet. The first heater heats the first thermal fixing roller. The second heater heats the second thermal fixing roller. The multiple temperature detectors are at different positions along an axial direction of the thermal fixing roller pair. The multiple temperature detectors detect a surface temperature of the thermal fixing roller pair. The driver drives the thermal fixing roller pair.