Plastic Pipe Butt Welding With One-Cut Surface Machining
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Solution Overview
Problem
Existing methods for producing butt weld joints between plastic pipe segments require numerous manufacturing and handling steps, leading to lengthy construction times, particularly in complex piping systems.
Innovation Solution
A method and device where the tool device for machining welding contact surfaces is arranged stationary, allowing simultaneous formation of the welding contact surfaces and pipe segments through a separating cut, enabling flexible orientation of the separating plane relative to the pipe's longitudinal axis, and utilizing a milling tool for one-operation surface machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the tool device for machining welding contact surfaces is arranged stationary and used for both machining and separating cuts, then the number of manufacturing and handling steps is reduced, but the device complexity increases
Solution Approach 1:
The patent combines the machining function and separating cut function into a single stationary tool device. The tool device includes both a machining tool for creating welding contact surfaces and a separating tool for cutting the pipe, allowing both operations to be performed in one setup without requiring separate devices or multiple handling steps.
Solution Approach 2:
The stationary tool device is designed with multi-functionality to perform both machining and separating operations. The device can machine the pipe end to create welding contact surfaces and then perform the separating cut to divide the pipe into segments, making a single device capable of multiple functions that would traditionally require separate equipment.
2Adaptability or versatility
If the separating cut is performed by relative movement of the pipe with respect to the tool, then flexible orientation of the separating plane is enabled, but the handling steps increase
Solution Approach 1:
The patent employs dynamic positioning where the pipe can be moved relative to the stationary tool device in various orientations. The gripping devices hold the pipe and allow it to be positioned at different angles, enabling the separating plane to be oriented flexibly while keeping the tool device fixed, thus achieving adaptability without requiring a complex movable tool system.
3Manufacturing precision
If multiple manufacturing and handling steps are used for pipe segment preparation, then the machining precision is maintained, but the construction time increases
Solution Approach 1:
The patent implements continuous processing where the pipe is machined and separated in one continuous operation using the stationary tool device. Instead of performing machining, handling, and separating as discrete steps requiring multiple setup changes, the process flows continuously with the pipe being fed through the stationary tool device for both machining and cutting, eliminating idle time and setup transitions.
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 significantly reduces manufacturing and handling steps, enabling faster production of pipe connections with varying angles without changing the pipe's holding position, thus shortening construction times.
Implementation Method 1
the weld contact surfaces are melted by a heating device
Implementation Method 2
pipe end cross-sections of the pipe segments are machined with a tool device
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a method and a device for producing a butt weld joint between two pipe segments (38, 39) of a pipe (27, 28) made of a weldable plastic material, each of which is held by a gripping device (14, 15), wherein pipe end cross-sections of the pipe segments (38, 39) are machined by a tool device (11) to form welding contact surfaces (40, 41), wherein the tool device (11) for machining the welding contact surfaces (40, 41) is arranged stationary in a parting plane (37) and a parting cut to form the pipe segments (38, 39) is carried out by means of a relative movement of the pipe (27, 28) relative to the tool device (11) in the parting plane (37) by the gripping devices (14, 15), wherein the parting cut simultaneously serves to form the welding contact surfaces (40, 41).