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Numerical Analysis of the Process of Piezoelectric Inkjet and the Ink Supply System Design

Author: WuZuo
Tutor: ZuoFang
School: Zhejiang University of Technology
Course: Mechanical and Electronic Engineering
Keywords: Piezoelectric inkjet Numerical Analysis Ink supply system Microcomputer control
CLC: TS853.5
Type: Master's thesis
Year: 2012
Downloads: 24
Quote: 0
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Abstract


The printing industry is the basis of our national economy, with the continuous development of high-tech, traditional printing industry is also facing the industrial upgrading to digital printing direction, which has a low-cost operation, and environmental advantages of digital inkjet technology is the industry identified as future mainstream printing technology. \Nozzle and ink supply system is to ensure the continuous, reliable and high-quality industrial high-speed inkjet presses running key factor. Inkjet printheads patents have long been the monopoly of foreign technical barriers, the development cycle is longer as important as the technical difficulty of the ink supply system is relatively low, and less research, which will help to get a breakthrough, achieved independent intellectual property rights, which to seize the initiative in the research and development of high-speed inkjet presses. Ink key decisions and restricting the efficiency and quality of inkjet printing. Inkjet ink technology in China has made great progress, but still lacking in key technologies the ink characteristics influenced by environmental factors, poor caused inkjet effects. Demand for inkjet system to carry out the following work: 1) analysis of the inkjet printing works, especially in the industrial inkjet printing using piezoelectric inkjet technology droplet ejection process fluid characteristics. Analysis of the impact of inkjet printing quality factors, combined with the principles of fluid dynamics to study the mechanism of the ink characteristics of piezoelectric inkjet process. 2) the use of the Fluent computational simulation platform, the physical and mathematical models of a piezoelectric inkjet ink characteristics affect the mechanism of ink droplets forming and injection effect analysis, the conclusion of its optimum viscosity range sprinklers work. 3) Piezo for XAAR500, analyze its structure parameters and operating characteristics, functional and structural design of the ink supply system, and the development of 51 microcontroller-based control system, complete assembly, run independently by a mechatronic subsystems . Through the control of the temperature of the ink and the negative pressure, to achieve good ink properties and the ink supply characteristic control performance, and to meet the ink jet system is a continuous, reliable and high-quality operation demand. In this paper, the ink characteristics and piezoelectric inkjet process, using Fluent software simulation analysis the ink characteristics inkjet printing mechanism, based on the design and development of the ink supply system, proposed to be adjusted by controlling the temperature of the ink viscosity and control the ink level adjustment of the pressure of the ink supply method, a good control of the characteristics of the ink properties and the ink supply is completed, and improve the reliability of the high-speed inkjet printing, and printing effects. Achieved good results in practical applications.

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CLC: > Industrial Technology > Light industry,handicrafts > Printing Industry > Special printing > Special printing: process sub- > Inkjet printing
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