阵列双模式喷印平台的数控系统设计

目的为了使喷印设备趋向高密度、高精度、立体化,研究并设计喷印平台的数字系统控制。方法采用矢量控制、自动控制和数控系统方法,以FPGA实现主控模块,配合DSP的定位圆图像采集及参数提取,并采用CNC和CCD等技术进行实时定位,整体操纵交错排列、斜装组合的喷头,喷头有平移、旋转运动控制和图像识别辅助控制,又有喷墨头的温度、流量等过程控制。结果实现阵列双模式喷印平台的数字控制,可在基材上方高速并列喷印。对多排喷嘴的数据进行处理及分配,实现实时喷射控制、装置控制逻辑与状态管理,多排喷嘴收发一次数据,能喷印一行完整的像素点矩阵,并能根据平台的偏移量,精确调整喷印图线,重新设定控制程序可改变布线。结论设计的平台能简化传统工艺流程,解决了内部传输速度的瓶颈问题,不需要为新产品的每一次改动而制作网版。

CNC System Design of Array Dual-mode Jet Printing Platform

The aim of this study was to achieve the high-density, high-precision, and three-dimensional objectives of the jet printing device, we studied and designed the digital control system for the jet printing platform. Using the general methods of the vector control, automatic control and numerical control system, implementing the master circuit module with FPGA, and matching the image acquisition positioning and parameter extraction with DSP, using the technology of CNC and CCD to conduct real-time position, the nozzle compositing the staggered array and angle mount mode could be controlled. The nozzle was subjected to control of the translation, rotation motion and image recognition, and the temperature and flow process control of the ink jet head. Numerical control of the array dual-mode jet printing platform was realized, which could print with paralleling paste and high speed above the substrate. Through data processing and distribution of the multiple-row nozzles, real-time injection control, device logic control and state management could be realized. By one data sending and receiving of the multiple-row nozzles, a complete row of pixel matrix could be printed. And the arrangement could be changed by accurately adjusting the printing lines according to the offset of platform and resetting of the control program. The platform designed could simplify the traditional technological process, solve the bottleneck of internal transmission speed, and there was no need to change the printing plate for every change of the new products.