Recessed-Surface Coating Head Control for Uniform Coverage
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Solution Overview
Problem
Existing coating devices struggle to effectively coat objects with recessed portions, leading to poor coating quality and potential peeling of the coating layer due to air flow interference and uneven discharge of coating material.
Innovation Solution
A coating device with a head that adjusts its posture and movement direction relative to the object's recessed portions, using multiple heads with varying discharge capabilities and controlled discharge gaps to ensure uniform coating, and a controller that manages the head's movement to improve coating quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional coating device is used to coat objects with recessed portions, then the coating process is simple, but the coating quality deteriorates due to air flow interference and uneven discharge
Solution Approach 1:
The head is designed to dynamically adjust its posture and movement trajectory in real-time based on the three-dimensional shape of the object surface. The controller modifies the head's orientation and position during the coating process to maintain optimal discharge gap and perpendicular angle relative to the surface, enabling high-quality coating on both flat and recessed areas without requiring multiple fixed coating heads
Solution Approach 2:
The system incorporates surface shape detection capability that provides feedback to the controller. Based on the detected three-dimensional surface information, the controller automatically adjusts the head's posture and movement parameters to compensate for surface variations, ensuring consistent coating quality across complex geometries including recessed portions
2Productivity
If the head moves at high speed to improve productivity, then the coating efficiency increases, but the coating uniformity deteriorates due to air flow interference
Solution Approach 1:
The head's movement speed is dynamically adjusted based on real-time feedback regarding coating uniformity and air flow conditions. The controller modulates the discharge gap and movement velocity to maintain optimal coating deposition, allowing high productivity while preventing coating defects caused by excessive air flow interference at high speeds
Solution Approach 2:
The system changes operating parameters including discharge gap distance and head movement speed based on the specific coating requirements and surface characteristics. By optimizing these parameters dynamically, the system achieves both high coating efficiency and uniform coating quality without the trade-off present in conventional fixed-parameter systems
3Manufacturing precision
If multiple coating heads are used to cover recessed portions, then the coating coverage improves, but the device complexity and cost increase
Solution Approach 1:
A single coating head is designed to perform multiple functions by dynamically adjusting its posture and movement trajectory. The head can effectively coat both flat surfaces and recessed portions through controlled orientation changes and adaptive path planning, eliminating the need for multiple specialized coating heads while achieving complete coverage
Solution Approach 2:
The single head achieves versatile coating capability through dynamic posture adjustment and adaptive movement control. By modifying its orientation and trajectory in real-time based on surface geometry, one head replaces what would traditionally require multiple fixed-position heads, reducing system complexity while maintaining comprehensive coating coverage
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 device achieves high-quality coating on both flat and recessed areas, reducing peeling and improving environmental strength by optimizing discharge amounts and angles, ensuring uniform coverage and enhanced appearance.
Implementation Method 1
A head 10 including a nozzle surface 12 coats a to-be-coated object 30 by discharging a coating material onto a surface 30a of the to-be-coated object 30
Data Source
AI summary
A coating device coats a to-be-coated object including a recessed portion extending in a first direction. The coating device includes a head, an arm, and a controller. The head includes a nozzle surface. The arm holds the head. The controller controls movement of the head via the arm. The controller moves the head in the first direction while causing the nozzle surface and the recessed portion to face each other in a posture in which a length of a first component along the first direction of the head is larger than a length of a second component of the head intersecting the first component.