Multi-Nozzle Line Drawing for Faster Accurate Liquid Deposition
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Solution Overview
Problem
Existing technologies do not effectively address the need to increase the speed of line-drawing applications, particularly in the manufacturing of electronic devices, while maintaining discharge amount and position accuracy.
Innovation Solution
An application device and method utilizing a nozzle with multiple discharge ports aligned along a straight line, where discharge timing is set to a constant interval, allowing simultaneous discharge of liquid droplets to form a continuous line on an application object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single discharge port is used to discharge liquid material droplets sequentially, then discharge amount accuracy can be maintained, but the line-drawing application speed is slow
Solution Approach 1:
The nozzle is divided into multiple discharge ports (first discharge port and second discharge port) arranged along the movement direction. Each port discharges droplets independently, allowing parallel operation to double the application speed while maintaining accuracy through controlled discharge timing intervals.
Solution Approach 2:
By arranging multiple discharge ports and controlling them to discharge at constant intervals, the system achieves continuous line-drawing operation without idle time between droplet discharges. The workpiece moves continuously while droplets are discharged from multiple ports in sequence, creating an uninterrupted application process.
2Productivity
If multiple discharge ports are used to increase application speed, then productivity improves, but discharge position accuracy may deteriorate
Solution Approach 1:
The control unit discharges droplets from multiple discharge ports at constant time intervals. This periodic control ensures that each discharge port operates in a coordinated sequence, maintaining precise spacing between droplets and ensuring accurate line formation despite the increased number of ports.
3Productivity
If discharge timing interval is reduced to increase application speed, then productivity improves, but discharge amount accuracy may worsen
Solution Approach 1:
The control unit precisely controls the discharge timing interval between droplets from adjacent discharge ports. By regulating the time interval to match the workpiece movement speed and maintain optimal droplet spacing, the system achieves both high application speed and accurate discharge amount control.
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 method and device enable faster line-drawing applications with improved discharge amount and position accuracy, enabling droplets to join seamlessly on the application object, forming a uniform line.
Implementation Method 1
a plunger driving means is then abruptly stopped to apply an inertial force to the liquid material, thereby discharging the liquid material
Implementation Method 2
the liquid material is discharged from the nozzle in a droplet state
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
An application device and an application method capable of increasing the speed of a line-drawing application are provided. The application device includes a discharge device, a worktable, a drive device, and a control unit. A discharge member gives an inertial force to a liquid material inside a liquid chamber, thereby discharging the liquid material from a plurality of discharge ports at the same time and forming a plurality of droplets on an application object. The plurality of discharge ports are arranged in a nozzle along a straight nozzle arrangement line, and the nozzle arrangement line is aligned with a drawing direction in which a drawing line is to be drawn. The application device performs the line-drawing application by discharging the liquid material such that a plurality of liquid masses discharged from the plurality of discharge ports do not contact with each other prior to landing on the application object, and that the liquid material having landed along the nozzle arrangement line join together on the application object.