UV Print Head Height Sensing for Collision-Free Object Printing
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Solution Overview
Problem
Existing UV printers face challenges in accurately determining the distance between the print head and the object to be printed, leading to potential collisions and poor user experience due to manual adjustment difficulties.
Innovation Solution
A printing device equipped with a height measuring assembly using laser through-beam sensors to measure the height of the object, allowing for precise adjustment of the print head distance, ensuring safe operations and improved printing quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the print head is positioned close to the object to improve printing quality, then printing quality is improved, but the risk of collision increases
Solution Approach 1:
The system performs preliminary height measurement of the object using laser sensors before the printing process begins. This advance measurement allows the control system to pre-calculate the optimal print head position and movement parameters, ensuring both high printing quality and collision prevention without requiring manual intervention.
Solution Approach 2:
The system implements a feedback mechanism where height measurement data from the laser sensors is continuously fed back to the control system. The control system uses this feedback to dynamically adjust the print head's position and movement trajectory in real-time, maintaining optimal printing distance while preventing collisions with objects of varying heights.
2Reliability
If manual adjustment of print head distance is used to prevent collision, then collision prevention is achieved, but operation complexity increases
Solution Approach 1:
The system performs self-service by automatically measuring object height using integrated laser sensors and autonomously calculating and adjusting the print head position. This eliminates the need for manual measurement and adjustment operations, reducing operational complexity while maintaining reliable collision prevention through automated safety protocols.
Solution Approach 2:
The system replaces manual mechanical adjustment operations with an automated control system that uses laser measurement and electronic control. The mechanical adjustment process that previously required human operators is substituted with an automated feedback control mechanism that automatically positions the print head at the optimal distance based on measured object dimensions.
3Manufacturing precision
If the mounting platform moves closer to the print head to reduce distance, then printing precision is improved, but the measurement accuracy requirement increases
Solution Approach 1:
The system introduces laser through-beam sensors as an intermediary measurement tool between the mounting platform and the print head. These sensors provide high-precision height measurement capability, enabling the system to accurately determine the optimal print head position even when operating at close distances, thus maintaining both printing precision and measurement accuracy.
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 device accurately adjusts the print head distance to prevent collisions and enhance printing quality, supporting various object heights and transparent materials, providing a better user experience.
Implementation Method 1
a height measuring assembly (30) is provided on the frame, the height measuring assembly (30) including at least one group of laser through-beam sensors (31)
Data Source
AI summary
Disclosed are a printing device and a printing method. The printing device may include a frame, and a mounting assembly, a printing assembly and a height measuring assembly provided on the frame. The mounting assembly may include a mounting platform with a mounting surface configured to mount an object to be printed, in which the mounting surface may have a mounting direction parallel to the mounting surface, and the mounting platform may be operable to reciprocate in a first direction perpendicular to the mounting surface; a printing assembly may include a print head located at a side of the mounting platform with the mounting surface, and a jet of the print head faces the mounting surface; and a height measuring assembly may include at least one group of laser through-beam sensors.