Printing Device Coating Scooping Width Adaptation
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Solution Overview
Problem
Conventional printing devices with coating material scooping units fail to account for the actual width of the coating material, leading to insufficient movement and potential failure in the scooping operation, which can result in increased operation time and unnecessary movement.
Innovation Solution
Incorporating a coating material width measuring unit and a controller to determine the optimal start and end positions and amount of movement for the scooping unit based on the actual width of the coating material, along with a mask mover to ensure the coating material is within the operating range, and a scooping state detector to prevent defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coating material scooping unit moves from a fixed design start position to a design end position, then the scooping operation can be performed, but the operation may fail due to insufficient movement amount caused by not considering the actual coating material width
Solution Approach 1:
The coating material width measuring unit measures the actual width of the coating material before the scooping operation begins. The controller then uses this measured width to determine the appropriate start position, end position, and movement amount for the coating material scooping unit, ensuring the scooping operation is properly configured in advance to prevent failure
Solution Approach 2:
The system implements a feedback mechanism where the actual coating material width is measured and fed back to the controller. The controller adjusts the scooping operation parameters (start position, end position, movement amount) based on this feedback, creating a closed-loop control system that adapts to variations in coating material dimensions
2Reliability
If the coating material scooping unit moves a larger amount to ensure complete scooping, then scooping failure is prevented, but unnecessary movement increases operation time
Solution Approach 1:
The system dynamically changes the movement parameters (start position, end position, movement amount) of the coating material scooping unit based on the measured coating material width. By adjusting these parameters to match the actual coating material dimensions, the system achieves complete scooping without unnecessary movement, optimizing both reliability and operation time
3Device complexity
If the operating range of the coating material scooping unit is reduced, then device downsizing is achieved, but the ability to handle coating material outside the original operating range is lost
Solution Approach 1:
The system introduces dynamic adjustability to the operating range through the mask mover. While the coating material scooping unit has a fixed operating range, the mask mover can dynamically reposition the mask to bring coating material located outside the original operating range into the scooping unit's working area, maintaining versatility without increasing the scooping unit's size
Data Source
AI summary
A printing device includes a controller configured or programmed to acquire, based on a width of a coating material that has been measured, at least one of a start position, an end position, or an amount of movement of a coating material scooping unit in coating material scooping operation.