Roughened Chute Surfaces for Uniform Netted Structure Cooling
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Solution Overview
Problem
The existing methods for manufacturing netted structures using water-permeable sheets on chutes are cumbersome due to issues like wrinkling and foreign material attachment, leading to non-uniform water layers and friction, which affects the formation of adequate loops and bonding in the filaments, necessitating bothersome replacement and maintenance.
Innovation Solution
An apparatus with uniformly roughened chutes and width setting plates, eliminating the need for water-permeable sheets, where sandblasting generates uniform friction and water distribution, allowing filaments to form loops and bond effectively without the need for sheet replacement, facilitating easy maintenance by washing the surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If water-permeable sheets are used on chutes to form water layers and control friction, then uniform cooling and filament looping can be achieved, but the sheets wrinkle and attach foreign materials requiring frequent replacement and maintenance
Solution Approach 1:
The invention extracts and removes the water-permeable sheets from the system entirely. Instead of using sheets that require maintenance, the patent applies roughening treatments directly to the chute surfaces themselves, eliminating the intermediate component that causes wrinkling and foreign material attachment while maintaining the necessary friction and water layer formation properties
Solution Approach 2:
The chute surfaces are designed to self-generate the required friction and water layer formation through roughening treatments. The roughened surfaces naturally retain water to form uniform layers and provide consistent friction control without requiring external sheets or frequent human intervention for maintenance, making the system self-sufficient
2Reliability
If water-permeable sheets are used to control friction and form water layers, then adequate filament loops and bonding can be achieved, but foreign materials attach to the sheets contaminating the netted structure
Solution Approach 1:
The invention removes the water-permeable sheets that serve as foreign material collection surfaces. By transferring the friction and water layer formation functions directly to the chute surfaces through roughening treatments, the system eliminates the intermediate component where foreign materials would attach and potentially contaminate the netted structure
Solution Approach 2:
The roughened chute surface acts as a permanent, integrated intermediary between the water and filaments. Instead of using removable sheets as intermediaries that can collect contaminants, the chute surface itself becomes the permanent mediator that provides consistent friction control and water layer formation without introducing foreign materials
3Ease of operation
If smooth chutes are used, then filaments slide easily but uniform water layers cannot be formed and friction control is insufficient for adequate looping
Solution Approach 1:
The invention applies roughening treatments selectively to specific regions of the chute surfaces where water layer formation and friction control are needed. This creates local variations in surface properties - roughened areas for water retention and friction, and smoother areas where easy sliding is desired - optimizing both functions in their respective locations
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 eliminates the need for water-permeable sheets, ensuring uniform cooling water layers and adequate filament bonding, enhancing the quality of the netted structure's surface layers while simplifying maintenance, thereby preventing foreign material contamination and improving the structure's tensile strength and fatigue resistance.
Implementation Method 1
the surfaces of the chutes are uniformly roughened so that cooling water spreads all over the surfaces of the chutes and forms cooling water layers
Implementation Method 2
a pair of water supplying units for supplying cooling water downward on surfaces of the chutes to cool the filament assembly
Implementation Method 3
the surfaces of the chutes are uniformly roughened so that cooling water spreads all over the surfaces of the chutes and forms cooling water layers
Data Source
AI summary
The purpose of the invention is to eliminate water-permeable sheets and thus to eliminate various bothersome works related to the water-permeable sheets.To achieve the purpose, the surfaces of the chutes 21, 22 are roughened by sandblasting. The chutes 21, 22 are made of metal such as stainless steel, for example. Processed metal surfaces are generally smooth with almost no friction. Moreover, metal has its inherent water repellency. If water is flowed on a bare metal surface, some parts do not get wet while some parts have concentrated surge water flow thereon. However, by sandblasting the surfaces of the chutes 21, 22, adequate friction resistance is generated and inherent water repellency of metal is eliminated.