Metal Sheet Repair Frame for Single-Sided Automated Welding
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Solution Overview
Problem
Conventional methods for repairing large metal sheets, such as steel belts, are limited by the size of cutouts, require manual welding with a blowtorch, and necessitate welding from both sides, making them time-consuming and prone to defects, especially when dealing with larger defects or complex geometries.
Innovation Solution
An apparatus with a base unit that remains attached to the metal sheet for continuous bracing during cutting and welding, allowing for automatic welding of a replacement metal disc without repositioning, using a cutting unit with rotating cutting blades and a welding unit with a rotating platform for single-sided welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual welding with a blowtorch is used, then welding can be performed on metal sheets, but the repair process becomes time-consuming and labor-intensive
Solution Approach 1:
The patent replaces manual mechanical welding operations with an automated welding system. The welding robot automatically performs welding tasks that were previously done manually with a blowtorch, significantly reducing repair time and eliminating the need for manual repositioning operations.
Solution Approach 2:
The welding system is designed to perform welding operations autonomously without requiring manual intervention. The robot automatically moves along the metal sheet, performs welding, and returns to base, making the system self-sufficient for the welding task.
2Reliability
If welding is performed from both sides of the metal sheet, then complete welding coverage is achieved, but the process complexity and time increase
Solution Approach 1:
Instead of welding from both sides as in conventional methods, the patent inverts the approach by performing welding from only one side. The welding robot is designed to deposit weld material that penetrates through the metal sheet, eliminating the need for second-side welding operations.
Solution Approach 2:
The patent extracts the welding operation to be performed exclusively from one side of the metal sheet. By removing the requirement for dual-sided welding, the process complexity is reduced while maintaining welding quality through controlled material deposition.
3Ease of operation
If the base unit is removed after cutting to allow welding setup, then welding access is improved, but the metal sheet stability is compromised
Solution Approach 1:
The patent merges the base unit functions to serve both cutting and welding operations. The same base unit that provides stability during cutting remains in place during welding, eliminating the need for removal and repositioning while maintaining sheet stability throughout both operations.
Solution Approach 2:
The base unit is designed with multi-functionality, serving as a stable platform for both cutting and welding operations. This universal base unit eliminates the need for separate setup procedures and maintains metal sheet stability throughout the entire repair process.
4Manufacturing precision
If the apparatus is repositioned for welding operations, then welding accuracy can be improved, but the repair time increases
Solution Approach 1:
The patent ensures continuous useful action by keeping the base unit in place throughout both cutting and welding operations. The welding robot moves along the metal sheet without requiring apparatus repositioning, maintaining continuous operation and eliminating time losses associated with moving equipment.
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 larger repair diameters without manual repositioning, reduces repair time, and minimizes defects by maintaining the metal sheet's stability and allowing automatic single-sided welding, improving efficiency and precision.
Implementation Method 1
a cutting unit configured to cut out a damaged portion of the metal sheet, the cutting unit including: an axle bar, a motor for providing a rotating cutting force for the cutting unit
Implementation Method 2
a welding assembly configured to automatically weld a replacement metal piece to the metal sheet, the welding assembly including a torch configured to perform a weld
Data Source
AI summary
An apparatus for repairing a metal sheet and method of operating the same are provided. The apparatus includes: a base unit including: a frame and an attachment feature on the frame, a cutting unit removably attachable to the base unit to cut out a damaged portion of the metal sheet, and a welding unit removably attachable to the base unit. The cutting unit includes: a cutting arm including a cutting blade, and a motor for operating the cutting arm. The welding unit includes: a fixed platform, a weld movement motor for moving a moveable platform on the fixed platform, and a welding assembly, attached to the moveable platform, to automatically weld a replacement piece to the metal sheet. In operation, the frame is continuously attached to the metal sheet during cutting of the damaged portion and welding of the replacement piece, providing a stable and repeatable frame of reference.