Oblique Spray Coating Arrangement for Complex Workpiece Coverage
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Solution Overview
Problem
Existing coating systems for workpieces, particularly those with complex geometries, face challenges in achieving uniform coating due to the complexity of vertically and horizontally arranged spray devices, which often require manual re-coating and are inefficient in reaching all surfaces.
Innovation Solution
A spray device arrangement with a detachable extension and adjustable angle, allowing for oblique spraying, combined with a horizontally extending guide and drive mechanism, enables comprehensive coating of workpieces by moving the spray devices relative to the object, accommodating various geometries and angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If vertically and horizontally arranged spray devices are used to coat complex workpiece geometries, then comprehensive coating coverage can be achieved, but the system structure becomes relatively complex and requires manual re-coating
Solution Approach 1:
The spray device is configured to move along a horizontal guide axis while the spray nozzle is angled at 30-60 degrees relative to the horizontal, creating an oblique spraying trajectory. This three-dimensional motion path (horizontal movement + angled spray direction) allows a single spray device to cover areas that would traditionally require multiple vertically and horizontally arranged devices, simplifying the overall system structure while maintaining comprehensive coating coverage
Solution Approach 2:
The single spray device with oblique spraying capability performs multiple functions: it can coat vertical surfaces, horizontal surfaces, and angled surfaces of complex workpiece geometries through its combined horizontal movement and angled spray direction. This multi-functional approach replaces the need for multiple specialized spray devices arranged in different orientations, reducing system complexity while achieving uniform coating on all surfaces
2Manufacturing precision
If multiple spray devices are arranged to reach all surfaces of workpieces, then complete coating coverage is achieved, but the cleaning process becomes more difficult
Solution Approach 1:
The spray device is designed with a detachable extension that can be separated from the main body. This segmentation allows the extension (which contacts the workpiece and accumulates coating material) to be easily removed and cleaned independently, while the main body containing the supply lines remains intact. This design simplifies the cleaning process compared to systems with multiple fixed spray devices, as only the detachable extension needs thorough cleaning
3Area of stationary object
If vertically arranged spray devices are used, then lateral coating is achieved, but surfaces unable to be reached by lateral spray devices remain uncoated
Solution Approach 1:
Instead of arranging spray devices only vertically or only horizontally, the invention angles the spray nozzle at 30-60 degrees relative to the horizontal guide axis. This oblique orientation creates a spray trajectory that simultaneously covers lateral surfaces and reaches top/bottom surfaces that would be inaccessible to purely vertical or horizontal spray devices, thereby expanding the effective coating area without adding more devices
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 allows for efficient, automated coating of all sides of workpieces, including hard-to-reach areas, reducing the need for manual re-coating and simplifying the cleaning process by encapsulating supply lines, thus enhancing coating quality and efficiency.
Implementation Method 1
at least one spray device (2) having a spray nozzle (3) via which the coating material is dispensable in a main spraying direction
Data Source
AI summary
An arrangement is disclosed for the preferably automatic coating of objects with a coating material, in particular coating powder. The arrangement includes at least one spray device having a spray nozzle via which the coating material is dispensable in a main spraying direction. An extension is further provided, wherein an end region of the extension facing the spray device is preferably detachably connected to an end region of the spray device associated with the extension opposite from the spray nozzle. The arrangement further includes a preferably horizontally extending guide via which the extension with the spray device connected thereto can be longitudinally moved in the direction of extension of the guide relative to the object to be coated. The main spraying direction of the spray nozzle may be implemented so as to deviate from the direction of extension of the guide by a predefined or definable angle.