Detachable Ring Light for Spray Guns in Uniform Coating
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Solution Overview
Problem
Existing spray coating technologies struggle to achieve homogeneous and uniform coating on complex objects with undercuts, openings, or irregular surfaces, particularly under unfavorable lighting conditions, requiring skilled operators and leading to inefficiencies and environmental impact.
Innovation Solution
A retrofit lighting device for spray guns, featuring a ring-shaped light source carrier with LEDs, which can be detachably connected to the gun, providing optimal illumination and optionally incorporating a counter electrode to improve electrostatic coating by absorbing free ions, ensuring uniform coating without structural modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a lighting device is integrated into the spray gun, then the illumination of the coating area is improved, but the device complexity increases
Solution Approach 1:
The lighting device is designed as a separate, detachable module that can be attached to or removed from the spray gun. This segmentation allows the lighting function to be added without permanently modifying the spray gun structure, thus improving illumination while minimizing the increase in device complexity.
Solution Approach 2:
The annular light source carrier serves multiple functions: it provides illumination for the coating area, acts as a mounting structure that can be attached to various spray gun models, and optionally incorporates a counter electrode for electrostatic coating. This multi-functionality reduces the need for additional separate components.
2Manufacturing precision
If the spray gun is modified to include a lighting device, then the coating quality assessment is improved, but the ease of operation deteriorates
Solution Approach 1:
The lighting device is designed to be detachable and replaceable, allowing operators to attach or remove it as needed based on working conditions. This dynamic configuration enables easy adjustment - the lighting device can be attached when coating quality assessment is needed and removed when it interferes with handling, thus maintaining ease of operation while enabling quality assessment when required.
3Illumination intensity
If a ring-shaped light source carrier is used, then the illumination uniformity is improved, but the device complexity increases
Solution Approach 1:
The light source carrier is designed with a ring-shaped (annular) structure that conforms to the cylindrical shape of the spray gun barrel. This curved geometry provides uniform illumination around the coating area by distributing light sources along the circular path, improving illumination uniformity while the simple annular shape keeps the structural complexity low.
4Adaptability or versatility
If the lighting device is detachably connected, then the adaptability is improved, but the reliability deteriorates
Solution Approach 1:
The connection between the lighting device and spray gun is designed as a segmented, modular interface with dedicated mounting elements. This segmentation allows the lighting device to be universally attached to different spray gun models while maintaining a stable and reliable connection through purpose-designed attachment points, thus achieving both adaptability and connection stability.
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 inexperienced operators to achieve uniform coatings by illuminating the coating area, reducing recoating needs, saving time and resources, and improving coating quality by minimizing orange peel effects and enhancing material penetration into recesses.
Implementation Method 1
The lighting device comprises an annular light source carrier with at least one light source, in particular in the form of an LED
Implementation Method 2
optionally incorporating a counter electrode to improve electrostatic coating by absorbing free ions
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a spray gun (1), in particular a powder spray gun, wherein the spray gun (1) has a handle part (2) and a gun barrel (3) connected to the handle part (2). According to the invention, it is in particular provided that the spray gun (1) further comprises an illumination device (4) for continuously or optionally illuminating and/or lighting at least one region of an object (20) to be coated by the spray gun (1). The illumination device (4) is detachably and in particular exchangeably connected to the spray gun (1) and has a ring-shaped lighting means carrier (5) with at least one lighting means (6), in particular in the form of an LED. The lighting means carrier (5) extends around a downstream region of the gun barrel (3), on which it is radially supported.