Hand hot air welding device
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Solution Overview
Problem
Hand hot air welding devices often experience hose twisting during manual operation, leading to reduced performance and increased wear on cables and hoses due to the independent rotation of the handle, metal working part, and hose, which complicates the welding process and affects weld quality.
Innovation Solution
The control electronics are fixedly mounted in a housing with a pivotally attached handle and metal outlet pipe, secured by a split flange and insulating ring, preventing axial displacement and rotation of the air supply hose, ensuring stable positioning during welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the handle and metal working part are rotatably mounted to allow independent rotation during welding, then the welding nozzle can be positioned optimally, but the air supply hose gets twisted and jams
Solution Approach 1:
The patent combines the handle and metal working part into a single rotatable assembly that moves together as one unit. The handle is fixedly connected to the metal working part, so when the user rotates the assembly, both components rotate simultaneously, preventing the air supply hose from twisting while still allowing optimal positioning of the welding nozzle.
2Adaptability or versatility
If the hose is pivotally mounted in the handle to allow rotation, then the handle and metal part can rotate independently, but the hose jams frequently
Solution Approach 1:
The patent eliminates the pivotal mounting of the hose by fixing the handle to the metal working part. This merging of components ensures they rotate together, preventing hose jamming while maintaining the ability to position the welding nozzle optimally through unified rotation of the entire assembly.
3Adaptability or versatility
If the handle, metal part, and hose can rotate independently, then flexibility is improved, but the supply cable and hose are damaged more quickly
Solution Approach 1:
By fixingly connecting the handle to the metal working part, the patent ensures they rotate as one unit, preventing unnecessary twisting of the hose and cable. This reduces mechanical stress and wear on these components, extending their service life while maintaining the flexibility needed for welding operations.
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a hand hot air welding device comprising a handle (1), in which control electronics are mounted, wherein the rear part of the handle (1) is associated with an air hose (5) in which is arranged a power supply to the control electronics and further to a heating element arranged in a metal outlet pipe (8) terminated by a hot air outlet (82). The control electronics are fixedly and airtightly mounted in an electronics housing (2) to which a cover (4) is fixedly attached for connecting the air hose (5), wherein on the electronics housing (2) is pivotally mounted the handle (1), which is fixedly connected to the metal outlet pipe (8).