Convex Blade with Rotating Insert for Pre-Insulated Pipe Stripping
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Solution Overview
Problem
Existing peeling tools are not suitable for stripping and peeling pre-insulated pipes, as they fail to effectively separate the thicker foam insulation from the inner pipe and adapt to the outer lateral surface, which is necessary for optimal welding preparation.
Innovation Solution
A blade design featuring a convex base body with a cutting edge and a separate insert blade mounted on an axis, allowing for rotation and movement to efficiently detach the insulation layer, with the cutting edges oriented in opposite directions for efficient peeling, and incorporating a spring element for pressure and bevels for easier piercing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rigid blade with fixed cutting edges is used, then the blade structure is simple and easy to manufacture, but the blade cannot adapt to the outer surface of the inner pipe, resulting in poor peeling quality
Solution Approach 1:
The insert blade is designed to be movable relative to the base body along the longitudinal axis, allowing it to dynamically adjust its position to adapt to variations in the inner pipe's outer diameter and surface profile. This dynamic adjustment capability enables the cutting edge to maintain optimal contact with the pipe surface during the peeling process, resolving the contradiction between adaptability and structural simplicity.
2Manufacturing precision
If the insert blade is made movable to adapt to the pipe surface, then the peeling quality improves, but the blade structure becomes more complex
Solution Approach 1:
The blade is divided into two independent segments: a base body and a separate insert blade. The insert blade can be independently adjusted and replaced, allowing for precise control of the cutting edge position to achieve high peeling quality. This segmentation enables the movable component to be simplified and standardized, reducing overall structural complexity while maintaining manufacturing precision.
Solution Approach 2:
The position of the insert blade along the longitudinal axis can be adjusted to change the cutting depth and angle parameters. This parameter adjustment capability allows the blade to adapt to different pipe dimensions and achieve optimal peeling quality without requiring a completely complex reconfiguration of the entire blade structure.
3Productivity
If a single cutting edge orientation is used, then the blade design is simpler, but unnecessary movements are required during the stripping and peeling process, reducing efficiency
Solution Approach 1:
The blade design integrates two cutting edges with opposite orientations on the insert blade, allowing both stripping and peeling operations to be performed in a single combined motion. This merging of functions eliminates the need for separate operations and unnecessary movements, thereby improving productivity while keeping the cutting edge configuration relatively simple and symmetrical.
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
Enables efficient stripping and peeling of pre-insulated pipe ends by adapting to the inner tube's surface, reducing unnecessary movements and ensuring a stable, effective process for preparing the surface for welding.
Implementation Method 1
incorporating a spring element for pressure
Data Source
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AI summary
Blade for a stripping and peeling tool for stripping and peeling a pre-insulated pipe, comprising a base body, wherein the base body is designed as an elongated, thin plate, wherein the plate is convex and the apex of the convex curvature extends along the length of the plate, wherein a cutting edge is arranged on a longitudinal edge of the plate or the base body, wherein the insert blade is designed as a separate part and the blade includes an axis, wherein the axis serves to support the insert blade in the base body and preferably projects through the insert blade, wherein the insert blade has a cutting edge and the insert blade is arranged in the base body such that the cutting edge of the insert blade runs parallel to the cutting edge on the base body.