PEX Tube Coupler Assembly for Uniform Post-Crosslinking Forming
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Solution Overview
Problem
The existing manufacturing process for cross-linked polyethylene tubes often results in non-uniform cross-linking when a coupler is added after the cross-linking process, leading to inconvenient and inefficient production.
Innovation Solution
A forming assembly comprising a press block and a forming block, where the press block includes a holder recess and an extension with a recess to receive a tube, and the forming block has a conical recess to compress and align the tube for insertion through a coupler, ensuring uniform cross-linking by positioning the coupler after the cross-linking process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the coupler is disposed on the pipe before the cross-linking process, then the cross-linking can be completed, but the cross-linking becomes non-uniform and the process becomes inconvenient and inefficient
Solution Approach 1:
The coupler is pre-positioned in the forming block before the tube is inserted and cross-linked. This preliminary positioning ensures the coupler will be correctly located after cross-linking completes, allowing uniform cross-linking throughout the tube including at the coupling end, while maintaining manufacturing efficiency through a streamlined process
Solution Approach 2:
The forming block serves as an intermediary device that holds both the coupler and the tube during the cross-linking process. This intermediary structure enables simultaneous positioning of the coupler and tube, ensuring proper alignment and uniform cross-linking without requiring post-cross-linking adjustments
2Manufacturing precision
If the coupler is moved after cross-linking to ensure complete cross-linking, then uniform cross-linking is achieved, but the process becomes inconvenient and inefficient
Solution Approach 1:
The coupler is preliminarily positioned in the forming block before the tube is inserted and cross-linked. This advance positioning eliminates the need for post-cross-linking adjustments, achieving uniform cross-linking while maintaining process convenience through a streamlined, single-step operation
3Ease of manufacture
If the coupler is disposed on the pipe before cross-linking, then the assembly can be formed, but non-uniform properties result from non-uniform cross-linking
Solution Approach 1:
The forming block acts as an intermediary that simultaneously holds the coupler and tube in proper alignment during cross-linking. This ensures the entire tube, including the end with the coupler, receives uniform cross-linking treatment, maintaining both assembly feasibility and property uniformity
Solution Approach 2:
The forming block creates a replicated positioning structure where the coupler is held in the same relative position as it will occupy in the final assembly. This copying of the final configuration ensures uniform cross-linking while maintaining assembly feasibility
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 method allows for uniform cross-linking of polyethylene tubes and facilitates efficient assembly by ensuring the coupler is inserted after the cross-linking process, preventing non-uniform properties and streamlining the manufacturing process.
Implementation Method 1
compressing the radial projection of the tube by the first recess of the forming block
Data Source
AI summary
A tube assembly including a cross-linked polyethylene tube having a radial projection and a coupler, and a method for forming the tube assembly. A forming assembly is configured to dispose the radial projection of the cross-linked polyethylene tube through the coupler after the completion of the cross-linking process.