Rapid Heating Tip for Hot-Melt Glue Gun
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Solution Overview
Problem
Existing hot-melt glue guns have low heat conduction efficiency and long heating times due to the use of PTC heating sheets wrapped with insulative materials, resulting in inefficient glue melting and application.
Innovation Solution
A rapid heating gun tip for hot-melt glue guns featuring a transition tube with inclined heat conduction planes, PTC heating bodies, and a connecting sheet, which enhances heat transfer and reduces heating time by directly heating the glue without the need for insulative materials, and includes a cutter to facilitate faster glue stick cutting and melting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a PTC heating sheet wrapped with insulative material is used to heat the melt glue tube, then the heating body is formed and protected, but the heat conduction efficiency is low and the heating time is long
Solution Approach 1:
The patent removes the insulative material wrapping from the PTC heating sheet, extracting the harmful thermal insulation barrier that caused slow heat conduction. By taking out this insulative layer, the heating element achieves direct thermal contact with the melt glue tube, dramatically reducing heating time while maintaining reliability through alternative protection methods
Solution Approach 2:
The patent applies local quality by creating direct thermal contact zones between the PTC heating sheet and the melt glue tube at critical heating areas. The heating sheet is positioned to make intimate contact with the tube surface, concentrating thermal energy where needed most, while the insulative material is completely removed from the heating interface
2Reliability
If a PTC heating sheet wrapped with insulative material is used to heat the melt glue tube, then the heating body is formed, but the heat conduction efficiency is low
Solution Approach 1:
The patent extracts the insulative material that was wrapping the PTC heating sheet, removing the thermal barrier that caused energy loss. This extraction allows direct thermal coupling between the heating element and the melt glue tube, dramatically improving heat conduction efficiency and reducing energy waste
Solution Approach 2:
The patent creates an asymmetric thermal path by removing the insulative wrapping, allowing heat to flow directly from the PTC heating sheet to the melt glue tube at the contact interface. This asymmetric heat transfer path eliminates the symmetric insulation barrier and creates efficient thermal coupling
3Productivity
If the transition tube has inclined heat conduction planes with heating bodies, then the heating efficiency is improved and heating time is reduced, but the device complexity increases
Solution Approach 1:
The patent employs curved or inclined heat conduction planes on the transition tube instead of flat surfaces. These curved geometries increase the contact area between the heating bodies and the melt glue tube, improving heat transfer efficiency. The curved surfaces also facilitate better thermal coupling while maintaining a relatively simple overall structure
Solution Approach 2:
The patent introduces inclined planes that add dimensional complexity to the transition tube surface. By creating angled or curved heating surfaces rather than simple cylindrical surfaces, the patent increases the effective heating area and improves thermal contact with the melt glue tube, enhancing productivity through geometric optimization
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
The solution significantly improves heating efficiency, reduces heating time, and allows for flexible temperature adjustments, enabling rapid and uniform glue application with reduced heat loss and increased reliability, making it suitable for various glue stick types.
Implementation Method 1
a hot-melt glue gun uses a PTC heating sheet to heat a melt glue tube to melt the glue
Implementation Method 2
the heating body is a PTC heating sheet
Implementation Method 3
the transition tube and the cutter conducting heat to facilitate the cutter to heat the cut glue stick
Implementation Method 4
a heat insulating sheath in which the electrode sheet, the heating body and the transition tube are accommodated
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present disclosure relates to the field of electric power tools, and more particularly relates to a rapid heating tip for a hot-melt glue gun and a hot-melt glue gun. The rapid heating gun tip for a hot-melt glue gun comprises a glue loading sleeve (3) and a glue jetting nozzle (2), a transition tube (1) being formed between the glue jetting nozzle and the glue loading sleeve; wherein the rapid heating gun tip for a hot-melt glue gun further comprises an electrode sheet (6) and a plurality of heating bodies (4), the electrode sheets tightly press-fitting the heating bodies against outer sides of the heat conduction planes. The present disclosure addresses the issues of low heat conduction efficiency and long heating time.