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丝网 印花 系统 设计 CAD 图纸

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内容简介：

Screen printing system designStudent Name: Cheng zhoubo Class: 0781053Supervisor: Gao yanfengAbstract: The structural design of the automatic printing equipment used when driving outside the geneva mechanism rotating table, and network printing agencies and institutions to promote the use of screw drive bodies. Finally forming the main component is included in the base, tank rounds, pin, screw, nut, rail, shaft, table, etc. Need to check the strength of some important parts. Traditional relay control system to achieve motor control and protection features, because a lot of mechanical contacts, terminal complex, the traditional control methods have become increasingly complex production process can not meet the control requirements. Application of PLC to achieve the motor start and stop, rotating, and the order of start, step-down start and interlock protection features, you can give full play to PLC soft take control of the merits, by the logic becomes complex control functions; another , the application of PLC soft touch to replace the relay control circuit in the self-locking contact, interlock relay contacts and other contacts, and time to make the hardware connection PLC control system has been largely simplified, improve the reliability of the system. Therefore, motor control, the application of PLC control system to replace relay as inevitable. In the design of PLC control system is divided into circuit design, PLC and external wiring diagram flow chart, and the ladder and procedures of design.The automatic printing equipment can be transferred from the position of the table, can be up and down, move around in the printing sector, and can move around the push net institutions. Coordinated action by all agencies of the circuit and control system, the logical table and printing action, automatic printing process. High degree of automation, simple structure, easy to control with high practical value and the market space.Keywords