Liquid Discharge Head Dual-Driver Motion for Collision Avoidance
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Solution Overview
Problem
Existing liquid discharge apparatuses face challenges in quickly moving a liquid discharge head away from an object to avoid collisions, particularly when the head is about to collide with projections on the object, necessitating a lengthy movement of the entire unit which may not effectively prevent collisions.
Innovation Solution
The apparatus incorporates a carriage with a liquid discharge head and two drivers: a first driver to move the carriage along intersecting axes, and a second driver to move the head relative to the carriage along the same axis, allowing for rapid repositioning of the head to avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire spray gun head unit is moved away from the object to avoid collision, then collision avoidance is achieved, but the movement time becomes excessively long
Solution Approach 1:
The system divides the spray gun head unit into two independent movable components: the carriage holding multiple spray gun heads and the individual spray gun heads themselves. Each can move independently along the Z-axis through separate drive mechanisms, allowing selective repositioning without moving the entire unit.
Solution Approach 2:
The system implements dynamic control where the carriage and spray gun heads can move at different speeds and distances based on real-time collision risk assessment. When collision is detected or predicted, only the necessary component moves the minimum required distance, optimizing response time while ensuring safety.
2Reliability
If the entire spray gun head unit is moved away from the object, then collision avoidance is achieved, but productivity decreases due to lengthy repositioning
Solution Approach 1:
The system divides the spray gun head unit into two independent movable components: the carriage holding multiple spray gun heads and the individual spray gun heads themselves. Each can move independently along the Z-axis through separate drive mechanisms, allowing selective repositioning without moving the entire unit.
Solution Approach 2:
Instead of moving the entire carriage assembly, the system applies partial action by moving only the specific spray gun head that poses collision risk. This minimal necessary movement maintains safety while preserving overall system productivity and reducing repositioning time.
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
A liquid discharge apparatus includes a carriage (1), a liquid discharge head (300, 300C, 300K, 300M, 300Y, 300S, 300W) having a discharge port (P1, P2), a first driver (92), and a second driver (93). The carriage is movable along at least one of a first axis (X) and a second axis (Y) intersecting the first axis. The liquid discharge head is held by the carriage and discharges a liquid from the discharge port toward an object (100) in a direction along a third axis (Z) intersecting the first axis and the second axis. The first driver moves the carriage along the third axis. The second driver moves the liquid discharge head along the third axis relative to the carriage.