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Abstract
Multioperator silk screen printer is automatic silk screen printing equipment. There are many advantages, such as energy saving, reduce the labor intensity and so on. The control system consists of an intermittent movement main motor and eight color working station printing cycle motion motors. The system controls nine frequency converters through protocol macro communication by using PLC. This paper studies the principle and process characteristics of multioperator silk screen printer. Besides, this paper adopts protocol macro sequence generation method for communication between PLC and frequency converter. This method can control the programming of parameters, such as frequency, operation and monitoring. It also can realize the printing of eight color working stations and monitor the printing status in real time. The practical application proves that the method meets the technical requirements and the reliability is good.
Highlights
The silk screen printing technology is to make silk screen plate with various patterns place on the fabric
The active colour paste is added on the silk screen plate when printing
Under the action of the printing scraper and the slurry scraper, the colour paste is applied to the fabric through the gap of silk screen plate
Summary
The silk screen printing technology is to make silk screen plate with various patterns place on the fabric. Under the action of the printing scraper and the slurry scraper, the colour paste is applied to the fabric through the gap of silk screen plate. The shortcomings are labour intensity, pollution, waste of resources and low printing quality. It restricts the development of printing industry in our country more and more [2]. Automatic silk screen printing technology has the advantages of energy saving, environmental protection, labour intensity reduction and so on. In order to meet the needs of multiple colour printing, independent asynchronous motors are used at each working station. The drive uses protocol macros to communicate with multiple frequency converters to control per station printing
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