Hot Glue Gun Temperature Presetting Mechanism

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Solution Overview

Problem

Existing hot glue guns can only select between a limited number of temperature settings, leading to inefficient heating and viscosity control for glues with varying melting temperatures, making it difficult to apply different glues effectively.

Innovation Solution

A hot glue gun with presetting means connected to the control unit allowing for individual temperature adjustment, enabling precise viscosity control of the molten glue through a rotatable handwheel and interface for flexible temperature setting, and visual display for temperature indication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If only a limited number of temperature settings are provided, then the device structure remains simple, but the ability to process glues with different melting temperatures is limited and heating efficiency decreases

Engineering Contradiction:
Improvetemperature setting rangeVSAvoidpresetting means complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by enabling continuous temperature presetting instead of fixed discrete values. The presetting means allows the temperature parameter to be adjusted continuously within a range, transforming the heating element's operation from fixed-parameter to variable-parameter mode, thereby achieving versatile glue processing without excessive complexity

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention implements dynamics by making the temperature setting dynamic and adjustable rather than static and fixed. The control unit responds to user input from the presetting means and dynamically adjusts the heating element's temperature, allowing the system to adapt to different glue types and viscosity requirements in real-time

Inventive Principle:
Principle #15Dynamics

2Temperature

If the heater section is heated to a high temperature, then glues with high melting temperatures can be processed, but glues with lower melting temperatures are heated unnecessarily and their viscosity becomes too low for controlled dispensing

Engineering Contradiction:
Improveheating temperature precisionVSAvoidviscosity control
Core Design Contradiction:
TemperatureVSEase of operation

Solution Approach 1:

The patent uses parameter changes to precisely control the heating temperature according to the specific glue type. By allowing continuous temperature adjustment, the system can set the heating temperature parameter to match the melting temperature of different glues, avoiding excessive heating that would reduce viscosity too much and making dispensing difficult

Inventive Principle:
Principle #35Parameter changes

3Loss of time

If a detachable heater section is used to quickly change between different glues, then setup time is reduced, but the heater section may cool down and require reheating

Engineering Contradiction:
Improvesetup timeVSAvoidheater section temperature stability
Core Design Contradiction:
Loss of timeVSTemperature

Solution Approach 1:

The patent applies preliminary action by pre-heating the heater section before the glue stick is inserted. The control unit activates the heating element in advance, so when the glue is loaded, the heater is already at the required temperature, eliminating cooling time and maintaining temperature stability during glue changes

Inventive Principle:
Principle #10Preliminary action

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 efficient and precise application of different glues by allowing multiple temperature settings, improving viscosity control and dispensing accuracy, and simplifying the use of various glue types.

Implementation Method 1

For heating the solid glue or the glue stick, the hot glue gun has a heater section with a heating element

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

heating the solid glue and for dispensing the glue in a molten state

Methodology Applied
Scientific EffectMelting: Melting

Data Source

PatentEP4353366A1Hot glue gun with temperature setting
Publication Date: 2024.04.17 HENKEL KGAA
  • EP4353366A1 patent drawingFigure 1~2
  • EP4353366A1 patent drawingFigure 3~4
  • EP4353366A1 patent drawingFigure 5~6

AI summary

The invention relates to a hot glue gun (1) for receiving a solid glue, in particular in the form of a glue stick (2), for heating the solid glue and for dispensing the glue in a molten state, the hot glue gun (1) comprising a gun housing (10), which forms a handle (12), a heater section (11) with a heating element for heating the solid glue, the heater section (11) being detachably connected to the gun housing (10), and a control unit by which the heating element is controlled. The invention is characterized in that presetting means are provided which are connected to the control unit and by means of which a temperature to which the glue is heated can be individually preset.