Multi-Tool Device for Electrofusion Pipe Preparation
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Solution Overview
Problem
Existing devices for preparing tubular elements for electrofusion welding are limited as they typically perform only one operation, require multiple instruments, and are difficult to use in confined spaces, leading to economic inefficiencies and operational challenges.
Innovation Solution
A multiple tool device with a cup member and motion transmission means that integrates scraper, facing, and chamfering functions, allowing for uniform surface preparation, perpendicular alignment, and corner removal using a single tool, compatible with small diameters and limited spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple separate instruments are used for cutting, scraping, and facing operations, then each operation can be performed with specialized equipment, but the economic expenditure increases and the device complexity increases
Solution Approach 1:
The patent combines cutting means, scraper means, and facing means into a single integrated device that can perform all three operations on tubular elements. The device includes a cup member with motion transmission means that drives all three functional components, eliminating the need for multiple separate instruments and reducing both equipment costs and complexity while maintaining specialized functionality for each operation
Solution Approach 2:
The integrated device is designed to perform multiple functions (cutting, scraping, and facing) through a single multi-functional tool. The cup member can be configured with different operational modes to execute various preparation operations on tubular elements, providing universal applicability across different welding preparation tasks without requiring separate specialized equipment for each operation
2Manufacturing precision
If multiple separate instruments are used for preparation operations, then each operation has dedicated equipment, but the ease of operation deteriorates in confined spaces
Solution Approach 1:
By merging cutting, scraping, and facing operations into a single device with a compact cup member design, the patent enables all preparation operations to be performed from one location. This integrated approach significantly improves ease of operation in confined spaces where maneuvering multiple separate instruments would be difficult or impossible, while still maintaining the specialized functionality needed for each operation type
3Device complexity
If a single integrated device is used for all preparation operations, then the device complexity is reduced and ease of operation is improved, but the manufacturing precision may deteriorate compared to specialized equipment
Solution Approach 1:
The patent applies local quality by providing different operational characteristics at different locations within the single device. The cutting means, scraper means, and facing means are positioned and configured to perform their specific functions with appropriate precision at their respective locations. Each functional component is optimized for its specific operation while being integrated into the unified device structure, ensuring that manufacturing precision is maintained for each specialized operation
Data Source
AI summary
A multiple tool device, particularly adapted to prepare tubular elements to be welded by electrofusion, comprising a cup member which is associable with the end portion of a tubular element and is provided with motion transmission means adapted to turn the multiple tool device. The particularity of the present invention resides in that it comprises scraper means adapted to remove the outer surface layer of the end portion and facing means which have a working motion that is opposite with respect to the preceding means and are adapted to face the edge of the end portion so as to make it perpendicular to the axis of the tubular element.