Yarn Winding Tension Sensor Calibration Mechanism
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Solution Overview
Problem
Existing yarn winding apparatuses lack a practical method to regularly check the measurement accuracy of tension sensors, which affects the density of the wound package and is difficult for onsite operators to perform without detaching the sensor.
Innovation Solution
A yarn winding apparatus with a calibration mechanism and control section that allows switching between winding and calibration modes, enabling the application and measurement of a known tension to verify the sensor's accuracy without disassembly, using a tension applying section to adjust yarn tension and display measured values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the tension sensor is detached from the yarn winding apparatus to measure its accuracy with a measuring instrument, then the measurement accuracy of the tension sensor can be checked, but the operation becomes difficult for onsite operators and requires disassembly
Solution Approach 1:
The yarn winding apparatus performs self-calibration by applying a predetermined tension to the yarn and comparing the tension sensor's measurement with the known applied tension. This eliminates the need for external measuring instruments and detachment of the sensor, allowing onsite operators to easily verify measurement accuracy through the control section's calibration function
Solution Approach 2:
The tension applying section serves dual purposes: it applies tension during normal winding operations and applies a predetermined calibration tension when activated by the control section. This multi-functionality eliminates the need for separate calibration equipment, enabling easy on-site verification of sensor accuracy
2Productivity
If the tension sensor is used continuously without regular calibration checks, then operational efficiency is maintained, but the measurement accuracy deteriorates affecting package density
Solution Approach 1:
The control section enables periodic calibration by switching to calibration mode at predetermined intervals or on-demand. During calibration mode, the tension applying section applies a known tension and the control section adjusts the sensor's output to match, ensuring measurement accuracy is maintained without compromising operational efficiency between calibration cycles
3Ease of operation
If a calibration mechanism is added to the yarn winding apparatus, then the measurement accuracy can be checked without detaching the sensor, but the device complexity increases
Solution Approach 1:
The calibration function is merged into the existing yarn winding apparatus by integrating the tension applying section with the sensor system. The control section combines the calibration control logic with the existing winding control, eliminating the need for separate calibration equipment and reducing overall system complexity despite adding calibration capability
Data Source
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AI summary
A winding unit winds a yarn (Y) supplied from a yarn supplying bobbin (B) to form a package (P) and includes a tension sensor (6) and a control section (15). The tension sensor (6) measures a yarn tension. The control section (15) switches between a plurality of modes. The modes include an operation mode in which the yarn (Y) of the yarn supplying bobbin (B) is wound to form the package (P), and a maintenance mode in which an operator checks the yarn tension measured by the tension sensor (6).