Droplet Discharge Head Vertical Position Control
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Solution Overview
Problem
Conventional droplet discharge devices struggle to efficiently discharge droplets into recess parts of storage vessels with deep recesses, as the vertical movement required to adjust for the depth of the recess parts is time-consuming and affects the accuracy of droplet placement.
Innovation Solution
A droplet discharge device equipped with a discharge head that moves in two horizontal directions, a vertical position adjusting mechanism, and detection systems for horizontal and vertical position adjustments, allowing for precise control of the discharge height relative to the recess part bottom surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the discharge head continuously moves between a position facing the recess part and a position not facing the recess part while adjusting vertical position, then the droplet can be discharged into deep recess parts, but the operation time becomes excessively long due to the large amount of vertical movement required
Solution Approach 1:
The discharge head performs preliminary horizontal movement to position itself directly over the target recess part before executing vertical movement for droplet discharge. This preliminary positioning action reduces the total travel time by minimizing unnecessary horizontal movement during the discharge process
Solution Approach 2:
The system dynamically adjusts the discharge head's movement trajectory based on real-time detection of recess part depth and position. The control unit optimizes the sequence and speed of horizontal and vertical movements to minimize total operation time while maintaining precise droplet placement accuracy
2Adaptability or versatility
If the discharge head is adjusted in the vertical direction while being moved in the horizontal direction for a discharge target having a less uneven surface, then slight unevenness can be dealt with, but the control takes too much time when dealing with deep recess parts
Solution Approach 1:
The system transitions from primarily vertical adjustment for slight unevenness to a combined horizontal-vertical movement strategy for deep recess parts. The discharge head moves horizontally to position over the recess, then vertically to discharge, effectively using both spatial dimensions to address varying depths efficiently
Solution Approach 2:
The control unit dynamically changes movement parameters (speed, distance, sequence) based on the detected depth of the recess part. For deep recesses, the system increases vertical movement distance and adjusts horizontal positioning speed to optimize overall discharge efficiency while maintaining adaptability to different surface profiles
Data Source
AI summary
A droplet discharge device for discharging a droplet into recess parts of a storage vessel includes a storage vessel, a discharge head configured to insert a discharge surface into a recess part and discharge droplets while moving in two horizontal directions, a mounting table, a vertical position adjusting part configured to change a relative vertical position between the head and table, a vertical position adjustment control part configured to control the adjusting part, a horizontal position detecting part configured to detect a horizontal position of the storage vessel, and a target position detecting part configured to detect, before starting discharge, a distance from a vertical reference height to a discharge target surface, wherein the control part controls, based on the detected distance, the vertical position of the head or table during the discharge such that a discharge height of the discharge surface relative to the discharge target surface stays constant.