Independent Torque Control for Multiple Cloth Take-Up Rollers
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Solution Overview
Problem
Existing multiple-width looms experience winding creases during the take-up process due to uneven tension in the cloths caused by differences in weft tension, leading to inconsistent winding diameters and hardness in the taken-up product cloths.
Innovation Solution
A multiple-width loom equipped with a cloth take-up device featuring multiple take-up rollers, each independently adjustable in driving torque to match the specific tension requirements of the corresponding cloth, ensuring uniform tension and preventing creases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single take-up roller is used for multiple product cloths, then device complexity is reduced, but winding creases occur due to uneven tension distribution
Solution Approach 1:
The single take-up roller is divided into multiple independent take-up rollers, with each roller dedicated to taking up a specific product cloth. This segmentation allows each roller to independently control the tension for its corresponding cloth, preventing winding creases while maintaining manageable device complexity through modular design.
Solution Approach 2:
Each take-up roller is equipped with independently adjustable driving torque to match the specific tension requirements of its corresponding product cloth. This local quality adjustment ensures that each cloth receives the appropriate tension control, eliminating winding creases without requiring complex centralized control systems.
2Productivity
If driving torque is adjusted in correspondence with winding diameter, then take-up efficiency is improved, but tension uniformity across multiple cloths deteriorates
Solution Approach 1:
The centralized torque adjustment system is segmented into multiple independent torque adjustment mechanisms, one for each take-up roller. This allows each roller to independently adjust its driving torque according to its own winding diameter while maintaining appropriate tension for its specific cloth, thereby preserving both take-up efficiency and tension uniformity across all cloths.
Solution Approach 2:
Each take-up roller independently adjusts its driving torque parameter based on its winding diameter, allowing dynamic adaptation to changing tension requirements during the take-up process. This parameter change capability ensures consistent tension uniformity across multiple cloths while maintaining high take-up efficiency.
3Ease of manufacture
If weft tension varies along the weaving width, then weaving process is simplified, but cloth tension uniformity deteriorates
Solution Approach 1:
Each take-up roller is equipped with independently adjustable driving torque to compensate for the varying weft tension across different portions of the cloth. This local quality adjustment allows each roller to provide the specific tension needed for its corresponding cloth portion, maintaining tension uniformity despite variations in the weaving process.
Solution Approach 2:
The driving torque parameter of each take-up roller is independently adjusted to compensate for weft tension variations. This parameter change capability allows the system to maintain consistent cloth tension uniformity across all cloths while preserving the simplicity of the weaving process.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A cloth take-up device (11) of a multiple-width loom that weaves two or more cloths includes a plurality of take-up rollers (21, 22) that are provided at a take-up side of the loom in correspondence with the two or more cloths, respectively, the number of the plurality of take-up rollers (21, 22) being the same as the number of the two or more cloths, axes of the plurality of take-up rollers (21, 22) being oriented in a width direction of the loom; and a plurality of driving mechanisms (23) that are provided in correspondence with the plurality of take-up rollers (21, 22), respectively, each driving mechanism (23) including a rotating shaft that is rotationally driven by a driving device and a driving transmission unit that is provided in correspondence with the corresponding take-up roller and that transmits rotation of the rotating shaft to the corresponding take-up roller. In the cloth take-up device (11), the plurality of driving mechanisms (23) are capable of independently adjusting driving torques of the respective take-up rollers (21, 22).