Roofing Welder Extension Marking Tool
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Solution Overview
Problem
Thermoplastic roofing membrane welding machines struggle to efficiently mark the start and stop points of seams, leading to difficulties in locating and sealing open seams, which can result in leaks and increased warranty claims.
Innovation Solution
A thermoplastic welding machine extension marking tool that attaches to the machine and uses a lever-activated pulley system to lower a marker or pen to mark the seam edges during the welding process, allowing for easy identification of welded and unwelded areas without pausing the machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the thermal welding machine moves continuously across the roof to weld seams, then welding productivity is improved, but the ability to mark start and stop points accurately deteriorates
Solution Approach 1:
The marking tool is activated in advance at the exact moments when the welding machine starts and stops along a seam. By pre-marking these critical locations before the welding operation concludes, the system ensures that both productivity and location identification requirements are met without requiring the operator to pause welding for marking.
Solution Approach 2:
A mechanical linkage system connects the welding machine's movement to the marking mechanism. The lever arm with marker acts as an intermediary that translates the welding machine's position and motion into corresponding marks on the roof surface, ensuring accurate marking without interrupting the welding process.
2Loss of information
If the operator pauses the welding machine to mark seam locations, then marking accuracy is improved, but welding productivity deteriorates
Solution Approach 1:
The marking function is merged with the welding operation by integrating the marking mechanism into the welding machine's existing mechanical system. The marker is positioned and activated through the same mechanical movements that drive the welding process, allowing both welding and marking to occur simultaneously without requiring separate operations or pauses.
Solution Approach 2:
The marking action continues uninterrupted throughout the welding process. The lever arm mechanism ensures that the marker remains engaged with the roof surface at the appropriate moments, providing continuous marking action that coincides with the welding movement rather than requiring discrete pauses in the welding operation.
3Measurement precision
If the marking tool is complex with multiple components, then marking precision is improved, but device complexity increases
Solution Approach 1:
The marking tool utilizes the existing welding machine's mechanical components (lever arm, spring, pulley system) to achieve precise marking. By making these existing components serve dual purposes—both welding control and marking actuation—the system avoids adding separate complex marking mechanisms while still achieving the required marking precision through the shared mechanical motion.
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 quick and accurate marking of start and stop points on the roof, reducing the likelihood of missed seams and subsequent leaks, particularly beneficial for large roofs with multiple seam intersections.
Implementation Method 1
a cable or spring connected to the distal end of the hammer arm
Implementation Method 2
a hand lever mounted adjacent to hand controls on the thermal welding machine, wherein the hand lever is connected to the cable or spring such that motion of the hand lever raises or lowers the distal end of the hammer arm
Data Source
AI summary
A thermal welding marking system for attachment to a thermal welding machine including: a hammer arm rotatably connected to a mounting bracket attached to the thermal welding machine, wherein a distal end of the hammer arm is shaped to receive a marker or pen therein; a cable or spring connected to the distal end of the hammer arm; a cable connecting the hammer arm to a hand lever mounted adjacent to hand controls on the thermal welding machine, wherein movement of the hand lever raises or lowers the distal end of the hammer arm and thereby raises or lowers the marker or pen therein. In operation, the thermal welding machine is advanced across the edges of overlapping building roofing material and the marker or pen is intermittently lowered/raised to mark locations along a seam of the edges of overlapping building roofing material where the seam is either open or closed.