基于PLC的印刷设备样板机电气控制系统设计

 2023-10-12 08:10

论文总字数:10701字

摘 要

关键词:丝网印刷机,plc,变频器,人机交互

Abstract:With the rapid development of domestic industry, labor costs continue to increase, so the screen printing machine to improve the potential, reduce the volume of screen printing presses, improve the accuracy of screen printing machine control, liberate manpower, improve production efficiency is of great significance. This design uses Siemens PLC, the screen printing machine electrical control system design and transformation. High-performance microprocessor, fully meet the design needs of the equipment, through the use of PLC, touch screen, inverter to simplify the line of equipment, the addition of dangerous alarms, downtime. The touch screen, frequency converter and PLC communication interface are designed in detail. In the software aspect program is divided into main program, automatic program, manual program and reset program four parts, the use of modular programming method, in the trapezoidal diagram of the program function has a detailed annotation. In the aspect of man-machine interface, the various functional interfaces in the touch screen are developed by using the corresponding software, which improves the operation performance and facilitates the operator"s operation experience. Through this design to achieve a one-click Start, automatic completion of production, the liberation of manpower, greatly increased the safety performance of the equipment; high-performance processors make computing faster, allow faster implementation of complex logic, and improve product productivity and product accuracy.

Key words: screen print , plc, frequency transformer, The human-computer interaction

目录

1 绪论 4

1.1 丝网印刷及丝网印刷机 4

1.2 丝网印刷机在国内外的发展趋势 4

1.3 研究课题的意义和目的 5

1.4本文的研究内容 6

2 丝网印刷机的控制方案设计 6

2.1丝网印刷的工作原理 6

2.2 丝网印刷机的设计要求 7

2.3 丝网印刷机的控制结构 7

3 丝网印刷机系统的硬件设计 8

3.1 PLC的选型 8

3.2 PLC的 I/O地址分配变量表 9

3.3 变频器的选型 10

3.4 触摸屏选型 11

3.5 丝网印刷机的主电路 13

3.6 丝网印刷机的PLC接线图 13

3.7 丝网印刷机的触摸屏设计 14

4 丝网印刷机控制系统的软件设计 15

4.1 丝网印刷机的控制流程 15

4.2 丝网印刷机程序设计 17

5 丝网印刷机仿真调试 24

结论 27

参考文献 28

致谢 29

1 绪论

1.1 丝网印刷及丝网印刷机

丝网印刷就是将丝状物绷在网框架上,通过制作网版来进行印刷,相比国外,丝网印刷在中国出现的比较早,夹颉印花方法的出现时间就可以追溯到秦汉时期,在印刷行业有四大印刷方法分别是:凸印、凹印、平印、孔印,印花方法也是丝网印刷,归属于孔版印刷类,是在领域中[1]应用最为广泛的一种。

丝网印刷的特点:

(1)适应性比较好。丝网印刷可以在比较复杂的情况下进行工作,无论是曲面还是球面或者是平面他都能有比较好的表现,它可以被应用在印刷衣服图案,纸张,金属,木料等。

(2)油墨较厚。丝网印刷比别的印刷设备的油墨要厚实很多,可以被用于对立体形状要求比较高,层次比较好的场合。

(3)不易掉色。丝网印刷可以根据现实需求应用特殊颜料和油墨,耐光性比较好,色彩饱和度较高,所以他在广告牌,户外宣传海报应用上有比较好的表现,得到了广泛的应用。

(4)印刷面积大,就其它印刷方法所能达到的科技水平而言,由于受到机械设备的限制,其所能达到的最大印刷面积也不过为全张尺寸,但是丝网印刷可以打破这种限制进行大面积的印刷,现在最大幅度可达到3米×4米,但事实上可印刷的面积不仅限于此,它可以[1]印刷更大的面积。

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