Combined Yarn Producing Device with Differential Temperature Drawing
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Solution Overview
Problem
The existing methods for producing differential-shrinkage combined yarns require multiple labor-intensive and costly steps, including independent production of material yarns and their subsequent combination, which can be inefficient and costly.
Innovation Solution
A combined yarn producing device that serially performs processes from spinning to production, using a yarn feed roller and two drawing rollers with different feeding speeds and temperatures to create yarns with varying thermal shrinkage properties, which are then combined, reducing labor and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If material yarns are produced independently in separate packages and then combined, then the production process is more controllable, but the labor and cost increase significantly
Solution Approach 1:
The patent merges the production of first and second yarns into a single continuous process. The spinning apparatus produces both yarn types simultaneously, and the drawing apparatus processes both yarns in sequence without requiring separate production lines or package preparation steps, thereby reducing labor and process complexity while maintaining controllability
Solution Approach 2:
The drawing apparatus is designed with universal functionality to handle both the first and second yarns through the same mechanical system. The apparatus can selectively apply drawing treatment to different yarns using the same basic structure, eliminating the need for separate dedicated equipment for each yarn type
2Manufacturing precision
If two types of yarns are produced from separate material yarn packages, then the physical properties can be differentiated, but the production time and labor increase
Solution Approach 1:
The spinning apparatus is configured to produce both the first and second material yarns simultaneously in a preliminary stage, rather than producing them separately and then combining. This preliminary simultaneous production maintains the ability to differentiate physical properties while significantly reducing the total production time and labor required
Solution Approach 2:
The drawing apparatus operates continuously to process both yarn types through the same system. The apparatus maintains continuous operation to draw and treat both the first and second yarns without interruption, eliminating the need to stop and switch between separate production lines, thereby improving productivity while maintaining manufacturing precision
3Productivity
If a single spinning apparatus produces both yarn types, then labor and cost are reduced, but the control over yarn production becomes more challenging
Solution Approach 1:
The spinning apparatus is segmented into distinct sections that produce the first and second yarns separately but simultaneously. This segmentation allows independent control of each yarn type's production parameters while maintaining overall process integration, thus preserving production control reliability while achieving the benefits of a unified production system
Solution Approach 2:
The drawing apparatus incorporates dynamic control mechanisms that can adjust drawing conditions selectively for different yarn types during continuous operation. The system dynamically modifies processing parameters based on which yarn is being processed, ensuring reliable control over each yarn type's properties even though both are produced in a single integrated system
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
This approach allows for the efficient production of yarns with different physical properties in a single, streamlined process, significantly reducing labor and cost while facilitating easier interlacing of the yarns due to controlled tension and temperature differences.
Implementation Method 1
a first drawing roller on which a first yarn among the yarns fed from the yarn feed roller is wound, the first drawing roller being configured to be higher in yarn feeding speed than the yarn feed roller and to heat and feed the first yarn drawn between the yarn feed roller and the first drawing roller
Implementation Method 2
These two types of the yarns Ya and Yb are combined at the combining section 105 by air interlacing or the like
Data Source
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AI summary
A combined yarn producing device capable of serially performing processes from spinning to production of a combined yarn is provided. A combined yarn producing device 3 includes: preheating rollers 11 to 13 configured to take up yarns Y; first drawing rollers 14 and 15 on which a yarn Y1 among the yarns Y is wound, the first drawing rollers 14 and 15 heating and feeding the yarn Y1 drawn between the preheating roller 13 and the first drawing rollers 14 and 15; a second drawing roller 16 on which a yarn Y2 among the yarns Y is wound, the second drawing roller 16 being lower in roller surface temperature than the first drawing rollers 14 and 15 and feeding the yarn Y2 drawn between the second drawing roller 16 and the preheating roller 13; and an interlacing device 26 combining the yarn Y1 and the yarn Y2.