Clamping Ring Manufacturing Using Extruded Pipe Memory Properties
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Solution Overview
Problem
Existing methods for forming clamping rings for pipe connections using plastic materials with memory properties are either complex or lack effective retention mechanisms, particularly in ensuring correct positioning and sealing pressure.
Innovation Solution
A method involving extruding a pipe with an initially smaller inner diameter than the outer diameter, cutting it to form a pipe part, and partially enlarging the inner diameter to create a stop edge and chamfer, facilitating easy and secure clamping ring formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the clamping ring is made from an extruded pipe by cutting, then the manufacturing process is simple, but the inner diameter must be reduced afterwards to ensure correct positioning
Solution Approach 1:
The inner diameter of the extruded pipe is reduced during the extrusion process itself, before the pipe is cut into clamping rings. This preliminary action eliminates the need for subsequent inner diameter reduction steps, simplifying the overall manufacturing process while ensuring correct positioning of the clamping ring on the pipe.
2Manufacturing precision
If the clamping ring is made by injection molding, then manufacturing precision can be achieved, but the manufacturing process is more complex
Solution Approach 1:
The invention combines the extrusion process with the inner diameter reduction process into a single integrated operation. The extruded pipe is reduced in inner diameter while still in the extrusion line, merging two operations into one and avoiding the need for separate injection molding equipment while maintaining manufacturing precision.
3Ease of operation
If the inner diameter of the pipe part is enlarged over the full length, then the pipe part can be easily positioned, but the stop edge cannot be formed
Solution Approach 1:
The inner diameter of the pipe part is enlarged only over part of its length, not the full length. This local quality approach creates a distinct stop edge at one end while maintaining the enlarged diameter section for easy positioning. The selective enlargement provides both positioning ease and stop edge formation without compromising either function.
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 provides a fast, simple, and effective method for manufacturing clamping rings that ensure correct positioning and enhanced sealing pressure during pipe connections, leveraging the memory properties of the plastic material for secure retention.
Implementation Method 1
one end of a pipe made of a plastic material with memory properties The memory properties mean that plastic pipes with a memory capacity automatically strive to return essentially to their original shape and form after having been expanded
Implementation Method 2
extruding a pipe from a plastic material having memory properties
Data Source
Figure 1~3
AI summary
For forming a clamping ring (6) first the pipe is extruded. The extruded pipe is cut to form a pipe part. While extruding the pipe, its inner diameter is formed smaller than the outer diameter of a pipe (1) onto which the clamping ring is positioned before making a pipe connection. The inner diameter of the pipe part is made larger by removing material from the inside of the pipe part but only over part of the length of the pipe part such that a stop edge (7) is formed. The clamping ring is used on a pipe when making a pipe connection.