Flexible Screen Frame Manufacturing with Pre-Coated Wire and Shrink Tube Sealing
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Solution Overview
Problem
The existing methods for manufacturing window and door screens are costly and inefficient due to the need for powder coating lines, which require a clean environment, significant space, and generate wastewater, and result in inconsistencies in the finished product.
Innovation Solution
A method involving pre-coated flat steel wire is bent to form a screen frame, with the coating stripped at the weld points to allow for welding, and a shrink tube is used to cover the welds and provide a seal, eliminating the need for a powder coating line and allowing for a more streamlined manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If powder coating process is used to coat the wire coil, then the screen frame achieves a finished coating, but the manufacturing cost increases and the process requires significant space and generates wastewater
Solution Approach 1:
The wire coil is pre-coated with PVC coating before being formed into the screen frame. This preliminary coating action eliminates the need for subsequent powder coating processes, reducing manufacturing complexity and cost while maintaining coating quality consistency.
2Manufacturing precision
If powder coating line is installed, then the wire coil can be coated, but the manufacturing space requirement increases significantly
Solution Approach 1:
The coating is applied to the wire coil before it is formed into the frame structure, eliminating the need for a separate powder coating line and its associated space requirements in the manufacturing facility.
3Manufacturing precision
If powder coating process is used, then the screen frame is coated, but wastewater is generated that requires proper disposal
Solution Approach 1:
The process converts the potential harm of wastewater generation into a benefit by using a pre-coating method that eliminates wastewater discharge, thereby simplifying environmental compliance and disposal requirements.
4Device complexity
If the entire frame is made from single piece of material, then the frame structure is simplified, but the welding or connection process becomes more critical
Solution Approach 1:
The wire coil is pre-coated before forming and welding operations. The coating is applied in advance to protect the metal surfaces during subsequent processing steps, ensuring that the welding connections maintain both structural integrity and coating continuity.
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 reduces manufacturing costs and space requirements while ensuring a structurally sound and consistent product, with the shrink tube providing a durable seal and adhesive properties to integrate the screen mesh effectively.
Implementation Method 1
a shrink tube is used to cover the welds and provide a seal
Data Source
AI summary
A method for manufacturing a flexible screen frame from a flat wire having a coating includes bending the wire to substantially match the desired shape of the screen frame. The flat wire has a first end and a second end and the coating is removed from both ends to create bare wire portions that can be welded. A shrink tube is then slid onto the wire and moved away from the ends to be welded. Then, the ends are welded together and the shrink tube is used to cover the bare wire portions and the weld point. A screen mesh is then melted onto the frame.