Pre-Insulated Pipe End Stripping With Integrated Cutting and Peeling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tools are inadequate for efficiently stripping and peeling large pre-insulated pipe ends, as they either require multiple manual steps, are limited to smaller diameters, or fail to manage high pressure under the insulation layer, leading to errors and damage.
Innovation Solution
A peeling and cutting tool with a clamping unit, guide unit, support arm, and adjustable thread segment that allows for simultaneous cutting and peeling of the casing pipe and insulation layer, reducing pressure and eliminating the need for separate measurements by using the same cutting device for both processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual stripping and peeling methods are used for pre-insulated pipes, then flexibility and adaptability are maintained, but productivity is low and manufacturing precision is poor due to measurement errors and potential damage to the carrier pipe
Solution Approach 1:
The patent combines multiple functions (cutting, separating, and peeling) into a single integrated tool head that can perform all operations on pre-insulated pipes. The tool head includes a cutting device for cutting the outer pipe and insulation layer, a separating unit for separating the insulation layer from the carrier pipe, and a peeling unit for removing the oxide layer from the carrier pipe surface, all in one device
Solution Approach 2:
The tool is designed with universal applicability to handle different pipe diameters and perform multiple operations. The support arm can be adjusted to accommodate various pipe sizes, and the integrated tool head can perform cutting, separating, and peeling operations on different types of pre-insulated pipes, making it a multi-functional device
2Manufacturing precision
If existing peeling and cutting tools are used for large diameter pipes, then device complexity is reduced, but manufacturing precision deteriorates because the high pressure beneath the insulation layer prevents the blade from moving
Solution Approach 1:
The tool head is divided into functionally independent modules: a cutting device for cutting operations, a separating unit for separation operations, and a peeling unit for peeling operations. Each module can be independently adjusted and positioned, allowing precise control over the cutting depth and separation process to overcome the high pressure issue
Solution Approach 2:
The support arm is designed with adjustable and movable components that can adapt to different pipe diameters and pressure conditions. The tool head can be dynamically positioned and adjusted during operation to maintain precise cutting and separation even when dealing with high pressure beneath the insulation layer of large diameter pipes
3Productivity
If separate operations for cutting, stripping, and peeling are performed, then ease of operation is maintained, but productivity is low due to multiple individual steps and high potential for error
Solution Approach 1:
The patent combines cutting, separating, and peeling operations into a single integrated tool head that can perform all operations in one setup. The tool head includes a cutting device for cutting the outer pipe and insulation layer, a separating unit for separating the insulation layer from the carrier pipe, and a peeling unit for removing the oxide layer, all operable simultaneously or sequentially without repositioning
Solution Approach 2:
The integrated tool head enables continuous operation where cutting, separating, and peeling can be performed in one continuous motion along the pipe. The support arm rotates around the pipe while the tool head maintains continuous contact, performing all operations in a single continuous action rather than discrete steps
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Method and apparatus for stripping and peeling pre-insulated pipe ends using a peeling and cutting tool, the method comprising the following steps: • clamping the peeling and cutting tool to the inner diameter of the medium pipe by means of a clamping unit, • cutting through the outer casing pipe along its outer circumference and simultaneously cutting into the insulation layer by means of a cutting device arranged on a support arm, wherein the support arm is rotated about a guide unit arranged coaxially to the clamping unit, • removing the casing pipe, • separating the insulation layer from the outer surface of the medium pipe by means of a cutting unit, wherein the separation is generated by an increasing rotational movement of the cutting unit about the guide axis or pipe axis, starting from the pipe end face up to a predetermined pipe length.End position, • removal of the separated insulation layer from the medium pipe, • peeling and removal of the oxide layer of the outer shell surface of the medium pipe by means of a peeling unit, wherein the peeling takes place in the same or in the opposite direction of rotation and slope of the separation process starting from the end position of the predetermined pipe length or the end face of the pipe, wherein • before cutting through the shell pipe along the circumference, the shell pipe is cut open and the insulation layer is cut parallel to the pipe axis, preferably starting from the end face of the pipe up to a predetermined pipe length.