Heated Hot-Melt Adhesive Hose for Stable Spray Application
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing systems for spraying hot-melt adhesive require significant manual effort and struggle to maintain the required temperature, making the process labor-intensive and inefficient, especially in furniture manufacturing where precise application is necessary.
Innovation Solution
A system comprising a melter, air compressor, power and control system, and a gun with a heated hose and nozzle, where the hose is suspended by a flexible system to reduce ergonomic strain and maintain temperature stability, using a composition of hot-melt adhesive with specific viscosity and density ranges, and incorporating temperature sensors and heaters for precise temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a person holds the spray gun above the sprayed surface to maintain temperature, then the temperature stability is improved, but the ergonomic strain and manual effort increase significantly
Solution Approach 1:
A flexible heated hose acts as an intermediary between the adhesive source and the spray gun, allowing the gun to be positioned close to the workpiece without requiring the operator to hold it at a specific distance for temperature maintenance. The hose itself is heated to prevent adhesive cooling during transport.
Solution Approach 2:
The system includes self-heating capabilities through heated hoses and potentially heated components that automatically maintain temperature without requiring manual intervention or specific positioning by the operator. The adhesive system serves itself by maintaining temperature through integrated heating elements.
2Temperature
If the hose is rigid and heavy, then the temperature control is easier, but the ergonomic strain and handling difficulty increase
Solution Approach 1:
The patent employs a flexible hose instead of a rigid pipe to transport the hot-melt adhesive. This flexible hose can be heated to maintain adhesive temperature while being lightweight and easy to maneuver, eliminating the need for heavy rigid insulation or support structures.
3Shape
If the adhesive viscosity is high, then the adhesive holds its shape better, but the spraying efficiency and application precision decrease
Solution Approach 1:
The system controls the temperature of the adhesive within a specific range (150-250°C) to optimize the balance between viscosity and shape retention. By maintaining precise temperature control through heated components, the adhesive achieves the ideal viscosity for spraying while still retaining shape characteristics after application.
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
This solution significantly reduces the workload in applying hot-melt adhesive by allowing for precise and efficient application, maintaining temperature stability, and improving ergonomic handling, thus enhancing the manufacturing process of furniture and other glued surfaces.
Implementation Method 1
The pipe, through which the heated hot melt adhesive flows, and the air pipe are fitted in an insulating layer of a hose
Implementation Method 2
a melter for heating hot-melt adhesive
Implementation Method 3
an air feed mechanism... through which pressurized compressed air flows
Data Source
AI summary
A system for spraying hot-melt adhesive onto glued surfaces comprising a melter to heat hot-melt adhesive, an air compressor, a power and control system and a gun. The gun is connected to the melter by a pipe with screw connectors, through which a hot-melt adhesive being heated flows, and the air compressor by an air pipe with screw connectors through which a pressurized compressed air flows. The gun has a nozzle with a hot-melt adhesive outlet or orifice and a compressed air outlet. The pipe through which flows the hot-melt adhesive having a viscosity between 2500 mPa·s and 7000 mPa·s and a temperature between 120° C. and 200° C., and a density between 0.8 kg/dcm3 and 1.4 kg/dcm3, and the air pipe are fitted in an insulating layer of a hose.