Painting Robot Backward Path Nozzle Control
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Solution Overview
Problem
Current painting robot systems are limited to performing painting only in a forward path, lacking the capability to efficiently paint in a backward path, which restricts their productivity and painting quality.
Innovation Solution
A painting robot system equipped with a painting head featuring obliquely arranged nozzle columns and a piezoelectric substrate, controlled by an image processing device that creates and stores image data for both forward and backward paths, allowing the robot to eject droplets in a coordinated manner to ensure consistent painting on both paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If painting is performed only in the forward path using an inclined nozzle column arrangement, then droplet landing positions remain consistent and painting quality is maintained, but painting efficiency is reduced due to inability to utilize the backward path
Solution Approach 1:
The patent applies inversion by creating separate image data specifically for the backward path with reversed nozzle activation sequences. Instead of attempting to use the same forward-path image data for backward painting (which causes landing position deviations), the system inverts the approach by generating dedicated backward-path image data that accounts for the reversed movement direction, thereby enabling consistent painting quality on both paths
Solution Approach 2:
The patent segments the painting process into distinct forward path and backward path operations with separate image data for each. The image processing device creates and stores different image data sets tailored to each path's specific requirements, allowing independent optimization of droplet ejection timing and positioning for forward and backward movements, thus resolving the contradiction between efficiency and precision
2Manufacturing precision
If the painting head is equipped with multiple layers of inclined nozzle columns, then high-quality painting with higher resolution image data is achieved, but the system can still only paint in the forward path
Solution Approach 1:
The patent applies dynamics by making the nozzle activation sequence adaptable to the movement direction. The system dynamically adjusts which nozzles are activated and in what sequence based on whether the painting head is moving forward or backward. This dynamic control enables the static multi-layer inclined nozzle column structure to perform optimally in both directions, maintaining high painting quality while doubling productivity
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 high-quality painting on both forward and backward paths, improving painting efficiency and productivity by preventing position deviations and maintaining consistent film thickness, while preventing the formation of gaps or excessive overlap.
Implementation Method 1
a piezoelectric substrate for driving the nozzles to eject the droplets
Data Source
AI summary
Provided are a painting robot system that may perform painting well not only on a forward path but also on a backward path, and a painting method. An image processing portion (210) included in a painting robot system (11) creates image data for a forward path in a state of having first strip image data of a strip shape corresponding to nozzles (54A) in a first nozzle column (55A) and second strip image data of a strip shape corresponding to nozzles (54B) in a second nozzle column (55B), the image processing portion (210) creates the second strip image data as image data for a backward path in a state of deviating relative to the first strip image data, and the amount of position deviation is set as the following position: the Pth nozzle (54B) in the second nozzle column (54B) lands first relative to the Pth nozzle (54A) in the first nozzle column (54A) with an adjacent landing position at a distance of multiplying the number (N) by twice of the distance (L1).