The Research And Implementation Of Ultrasonic Coating System By PLC Control

Implant coronary stent is the main solutions to cure the disease of coronary. For decrease the rate of restenosis and improve the curative effect, there is a new solutions that is coating some drug on the surface of the coronary stent. That is drug-eluting stent.This project purpose is design and process an equipment system to coating the drug on the surface of the coronary stent. By compare with some kinds coating technology, I choose the ultrasonic atomize coating process to produce the drug coat on the stent surface.This dissertation introduces how design and process the operation system control the four axis orientation by the KEYENCE's KV-1000 PLC, HITECH's PWS3261 touch screen and YASKAWA's∑-Ⅱseries AC serve unit. It describes how design the ultrasonic atomizing nozzle system base on the theory of the ultrasonic atomizing and how realize the precision coating on the stent by the four axis orientation system with the PLC control.The dissertation is implement the ultrasonic atomizing in the coating process, and realizes the precision coating by the PLC and touch screen technology. It's expanded the coating process and accomplishes the requirement of Tianjin Bestchance co., ltd.