Plastic Pipe Butt Welding With Stationary Tool and Angle Cuts
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Solution Overview
Problem
The existing methods for producing butt-welded joints in plastic pipes require multiple manufacturing and operation steps, leading to long construction times, especially in complex piping systems.
Innovation Solution
A method and device where the tool means are stationed for machining welding contact surfaces, allowing for simultaneous formation of pipe segments and surface finishing, with the gripping means moving relative to the tool to create separating cuts at various angles, and a stationary heating means for efficient heating of the contact surfaces, enabling flexible positioning and reduced operational steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple separate steps are used for machining welding contact surfaces and forming pipe segments, then machining precision can be maintained, but construction time increases significantly
Solution Approach 1:
The patent combines the machining of welding contact surfaces and the formation of pipe segments into a single integrated process step. The tool means simultaneously performs both functions during one operation, eliminating the need for separate machining and cutting steps, thereby reducing construction time while maintaining machining precision through the stationary positioning of the tool means.
Solution Approach 2:
The tool means is designed with multi-functionality to perform both machining of welding contact surfaces and formation of pipe segments through separating cuts. This universal tool eliminates the need for multiple specialized tools and operations, streamlining the process and reducing overall construction time while preserving the precision required for welding contact surfaces.
2Adaptability or versatility
If the tool means are moved into position for each operation, then flexibility in handling different pipe configurations is achieved, but the number of operation steps increases
Solution Approach 1:
Instead of moving the tool means into position for each operation, the patent inverts the approach by making the gripping means movable relative to the stationary tool means. This reversal reduces the number of operation steps while maintaining flexibility, as the stationary tool means can handle various pipe configurations through the relative movement of the pipe segments held by the gripping means.
Solution Approach 2:
The patent segments the system into stationary tool means and movable gripping means with pipe segments. This segmentation allows the tool means to remain fixed in one position while the gripping means and pipe segments move to achieve different configurations, reducing operational complexity while preserving adaptability for various pipe arrangements.
3Manufacturing precision
If separate machining operations are performed for different separating angles, then machining precision is maintained, but the pipe holding method must be changed for each angle
Solution Approach 1:
The stationary tool means is designed with universality to handle multiple separating angles without requiring changes to the pipe holding method. The tool means can machine welding contact surfaces and form pipe segments at various angles (including 90° and other angles) while the gripping means maintains a consistent holding approach, thereby maintaining machining precision while simplifying operation.
Solution Approach 2:
The patent introduces dynamics by allowing the pipe segments to be oriented at different angles relative to the stationary tool means while maintaining a consistent gripping method. The system adapts to different separating angles through the relative positioning and movement capability of the gripping means, eliminating the need to change holding methods for each angle while preserving machining precision.
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 simplifies the production of pipe connections by reducing the number of steps, allowing for faster construction times and enabling the creation of complex pipe connections with varying angles without changing the pipe's holding method, thus enhancing efficiency and speed in plant construction.
Implementation Method 1
opposite pipe end cross-sections of the pipe segments being heated by means of a heating means (12)
Implementation Method 2
the welding contact surfaces being pressed against each other with a joining pressure for forming a butt weld
Data Source
AI summary
The invention relates to a method and to a device for producing a butt-welded joint between two pipe segments (38, 39) of a pipe (27, 28) made of a weldable plastic material, each pipe segment being held by a gripping means (14, 15), pipe end cross-sections of the pipe segments (38, 39) being machined with the aid of a tool means (11) for forming welding contact surfaces (40, 41), said tool means (11) being disposed in a stationary manner in a separating plane (37) for machining the welding contact surfaces (40, 41) and a separating cut for forming the pipe segments (38, 39) being realised by the gripping means (14, 15) moving the pipe (27, 28) relative to the tool means (11) in the separating plane (37), said separating cut simultaneously serving to form the welding contact surfaces (40, 41).