Segmented Pressing Wheels for Uniform Cloth Stretching
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Solution Overview
Problem
Conventional stretching assemblies for cloth result in non-uniform deformation, leading to uneven density and quality issues due to larger deformation on the sides compared to the middle of the cloth during the stretching process.
Innovation Solution
A stretching assembly comprising a heating furnace, a pressing device with annular protruding and concave segments on the pressing wheels, and a shaping device with shaping wheels that balance compressing and drawing deformations to achieve uniform density and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional transporting assemblies are used to stretch cloth, then the width of cloth can be changed, but the deformation on the sides is larger than that on the middle, causing non-uniform density and quality issues
Solution Approach 1:
The pressing wheels are divided into multiple annular pressing segments that can be independently adjusted. Each segment corresponds to a different radial position on the wheel, allowing different pressing forces to be applied to different regions of the cloth (center vs. sides), thereby achieving uniform deformation across the entire cloth surface.
Solution Approach 2:
Different regions of the pressing wheel are designed with different pressing characteristics. The annular pressing segments have varying pressing forces applied to them, with greater pressing force applied to the sides of the cloth and less to the middle, compensating for the natural tendency of sides to deform more during stretching.
2Manufacturing precision
If pressing force is applied to balance deformation, then uniform density can be achieved, but the device complexity increases with multiple adjustable segments
Solution Approach 1:
The pressing wheel is segmented into multiple annular pressing segments that can be independently adjusted. This segmentation allows precise control of pressing force distribution while maintaining a relatively simple overall structure that builds upon the conventional stretching assembly.
Solution Approach 2:
The pressing segments are designed to be adjustable, allowing the pressing force distribution to be dynamically modified. This enables the system to adapt to different cloth types and stretching conditions while maintaining uniform density, without requiring a completely complex redesign of the pressing mechanism.
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 ensures uniform deformation across the cloth, enhancing the quality by balancing compressing and drawing forces, resulting in a high-quality stretched cloth with consistent density.
Implementation Method 1
The fibers of cloth 70 are heated in the heating furnace 60 and may become soft, adhesive and deformable
Data Source
AI summary
A stretching assembly for cloth has a heating furnace, a pressing device and a shaping device. The heating furnace has two opposite sidewalls and a channel. The channel is formed through the opposite sidewalls of the heating furnace and has an inlet and an outlet. The pressing assembly is set to face the inlet of the heating furnace and has a first pressing wheel and a second pressing wheel. The first pressing wheel has multiple annular protruding segments formed on an external surface of the first pressing wheel. The second pressing wheel parallel the first pressing wheel to form a curved clearance between the pressing wheels and has multiple annular concave segments formed on an external surface of the second pressing wheel. The shaping device is set to face the outlet of the heating furnace, aligns with the pressing device and has two shaping wheels.