Threaded Pipe Assembly Injection Molding for Faucet Valves
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Solution Overview
Problem
Conventional threaded pipe assemblies in separable water faucets face inefficiencies in assembly and are prone to water leakage, leading to potential pollution.
Innovation Solution
A threaded pipe assembly where the valve body, aluminum casing pipe, water inlet pipe, and water outlet pipe are secured via injection molding, with a stainless steel cover and quick connector system to prevent leakage, and a method involving preformed pipes and molds for efficient assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional independent manufacturing and welding assembly is used, then manufacturing flexibility is maintained, but assembly efficiency is poor and water leakage occurs
Solution Approach 1:
The patent merges multiple components (valve body, mounting pipe, water inlet pipe, water outlet pipe, and sealing elements) into a single integrated injection molded assembly. This eliminates the need for separate manufacturing and welding operations, directly resolving the technical contradiction by improving assembly efficiency while reducing process complexity through component integration.
Solution Approach 2:
The injection molded valve body serves multiple functions simultaneously: it provides the structural housing, integrates sealing surfaces, incorporates mounting features, and creates fluid passages. This multi-functionality resolves the contradiction by consolidating what would otherwise require multiple separate components and assembly steps into a single universal component.
2Reliability
If welding is used to fix pipes to valve body, then assembly is achieved, but water leakage and pollution occur
Solution Approach 1:
The patent replaces the thermal welding process with a mechanical injection molding process. The sealing is achieved through integrated rubber seals and O-rings that are mechanically captured within the molded structure, eliminating the harmful thermal effects of welding that cause leakage and pollution while maintaining reliable connections.
Solution Approach 2:
The patent introduces rubber seals and O-rings as intermediary elements between the rigid components (valve body and pipes). These flexible sealing intermediaries prevent direct contact between mating surfaces, eliminating leakage paths that would otherwise require welding to seal, thereby preventing water pollution while maintaining connection integrity.
3Productivity
If multiple separate components are assembled, then manufacturing flexibility is maintained, but assembly time increases
Solution Approach 1:
The patent performs preliminary action by pre-integrating multiple components into a single molded assembly during manufacturing. The valve body, pipes, and sealing elements are combined in one injection molding operation, so that during final assembly, the entire integrated unit is installed as a single component, dramatically reducing assembly time while maintaining production efficiency.
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 solution simplifies the assembly process, prevents water leakage, and enhances production efficiency while avoiding pollution, with the added benefit of using plastic materials for environmental protection.
Implementation Method 1
the valve body is fixed in the aluminum casing pipe via injection molding, and the water inlet pipe and the water outlet pipe are fixed to the valve body via injection molding
Data Source
AI summary
One embodiment of the present invention relates to a threaded pipe assembly for use in a valve cartridge of a separable water faucet. The threaded pipe assembly includes a valve body, an aluminum casing pipe defining an external thread, a water inlet pipe and a water outlet pipe. The valve body is positioned in the aluminum casing pipe via injection molding. The water inlet pipe and the water outlet pipe are fixed to the valve body via injection molding. According to one embodiment of the present invention, the water inlet pipe, the water outlet pipe and the aluminum casing pipe are safely secured to the valve body via injection molding, which can simplify assembly process of the separable water faucet as well as avoid water leakage risk due to welded connection.