Painting Head Vibration Control for Stable Vehicle Body Coating
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Solution Overview
Problem
Existing painting robots experience reduced painting quality due to insufficient paint supply, leading to issues like gaps and blurring, and existing solutions to stabilize paint pressure require time, thereby reducing painting productivity.
Innovation Solution
A painting robot with a painting head and robot arm that applies supply vibration through instant direction-switching controls and inertial forces to ensure consistent paint supply, preventing gaps and blurring without delaying the painting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the speed of movement of the painting head is reduced before the start of painting to stabilize paint pressure, then painting quality is improved, but painting productivity deteriorates due to time loss
Solution Approach 1:
The patent applies preliminary action by moving the painting head in a specific pattern (first movement to first position, then second movement to second position) before actual painting begins. This preliminary movement sequence stabilizes the paint pressure within the painting head without requiring a complete stop or speed reduction, thereby preparing the system for quality painting while minimizing time loss.
Solution Approach 2:
The patent utilizes dynamics by employing dynamic movement patterns of the painting head rather than static positioning. The control unit dynamically adjusts the movement trajectory and timing of the painting head between different positions to optimize paint pressure stabilization, allowing the system to transition smoothly from movement to painting operation.
2Stability of the object's composition
If the painting head is moved to different positions before painting to stabilize pressure, then paint supply consistency is improved, but the time required for preparation increases
Solution Approach 1:
The patent performs the pressure-stabilizing movement sequence as a preliminary action before painting begins. The painting head executes the first movement to the first position and then the second movement to the second position in advance, ensuring paint pressure is stabilized before the actual painting operation starts, thereby eliminating the need for additional stabilization time during painting.
Solution Approach 2:
The patent maintains continuity of useful action by integrating the pressure stabilization movements into the overall operation flow without creating idle time. The control unit seamlessly transitions from the preliminary movements to the painting operation, ensuring that the painting head is ready for immediate painting without unnecessary delays or interruptions.
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
Improves painting quality and productivity by ensuring consistent paint supply to the nozzles, eliminating gaps and blurring, and maintaining efficient operation without the need for additional stabilization time.
Implementation Method 1
an arm control unit for controlling operation of the robot arm, the arm control unit controlling operation of the robot arm so that supply vibration for supplying the paint to the internal flow path is applied to the painting head before the painting area is painted
Data Source
AI summary
A painting robot paints a painting area of a vehicle body, and comprises: includes a painting head having a plurality of nozzles for ejecting drops of paint supplied from an external supply path via an internal flow path; a robot arm which has the painting head mounted on a tip end thereof and causes the painting head to move to a desired position; and an arm control unit for controlling operation of the robot arm. The arm control unit controlling controls operation of the robot arm so that supply vibration for supplying the paint to the internal flow path is applied to the painting head before the painting area is painted.