scholarly journals Research on Multioperator silk screen printer Based on Communication Protocol Macro

2018 ◽  
Vol 153 ◽  
pp. 08001
Author(s):  
Zhang Zhiming ◽  
Sun Jun ◽  
Lu Binbin ◽  
Duan Yaoshuai
Keyword(s):  
Screen Printing ◽  
Communication Protocol ◽  
Frequency Converter ◽  
Practical Application ◽  
Frequency Converters ◽  
Sequence Generation ◽  
Process Characteristics ◽  
Technical Requirements ◽  
Silk Screen ◽  
Silk Screen Printing

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.

scholarly journals Graphene spin-coated electrode for polyacrylonitrile acoustic nanogenerators

2021 ◽  
Author(s):  
Sedigheh Aghayari
Keyword(s):  
Nickel Nanoparticles ◽  
In Situ Synthesis ◽  
Coated Electrode ◽  
The Subject ◽  
First Time ◽  
Piezoelectric Nanogenerators ◽  
High Dust ◽  
Screen Ink

Abstract In recent years piezoelectric nanogenerators, due to their more durability in high dust or humidity are more attractive than triboelectric ones. So, increasing their outputs is the subject of much researches. I focused on electrodes of the acoustic nanofibers nanogenerators for the first time. Here, I introduced a new electrode that is cheaper and does not result in lower outputs. Here for the first time graphene spin-coated ink was used for polyacrylonitrile-based acoustic nanogenerator. The results of the tests compared with the in-situ synthesis of nickel nanoparticles on the layer and using graphene spin-coated screen ink and conductive tapes. Finally, producing sound by this graphene ink was done too.

Silk-Screen

2011 ◽  
pp. 666-666
Author(s):  
Jan W. Gooch
Keyword(s):  
Silk Screen

scholarly journals Towards a Better Understanding of Screen Print Thickness Control

1974 ◽  
Vol 1 (2) ◽  
pp. 129-136 ◽  
Author(s):  
R. J. Horwood
Keyword(s):  
Screen Printing ◽  
Physical Processes ◽  
Thickness Control ◽  
Scientific Approach ◽  
Silk Screen ◽  
Screen Print ◽  
Silk Screen Printing

In recent years, a more scientific approach to the age-old craft of silk screen printing has resulted in the evolution of complex precision-built printing machines for use in the electronics micro-circuit industry. Even so, our knowledge of the physical processes involved in screen printing is still far from complete. An attempt is made here to provide a better understanding of the screen printing mechanism and more specifically of print thickness control. Two different printing modes are described and the effect of and interaction between some of the more important machine parameters in this respect are discussed. A simple pillar theory is offered which allows a prediction to be made of the quantity of ink fundamentally deposited by a given screen.

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