The Research And Design For The Automatic Control System Of Cigarette TRAY Loader

Most of the cigarette machine equipments produced in civil as cigarette machine, splicer, cigarette TRAY Loader, packaging machine etc is mainly based on the foreign advanced technology. The electric control system includes many characteristics: application of computer controlling system, DC motor speed regulating system, costly fee of introduction, making against of batch production in corporation. To gain more profit, the electric control system of cigarette equipments is in dire need of comprehensive homemade research and design.The research and design of the electric control system of cigarette TRAY Loader, the paper presents a new kind of electric control system with SIMATICS7-200 programmable logic controller, frequency converter and AC motor to actualize speed regulating. Comparing with the existing machines, The new control system not only has the same capability but also reduces the cost and homemade production can be realized. At the beginning of the paper, the electric control system constitution of cigarette TRAY Loader and the characteristics of SIMATICS7-200 are introduced, generic system design methods with PLC are presented, the significance of the application of PLC and frequency converter is emphasized.Second, make a thorough cognition about the working process and control request of the cigarette TRAY Loader, selective style of PLC and hardware organization, I/O address distribution and the design for electric connection map of the hardware organization. To improve the reliability of the system, the interference produced from the inductance loaders has also been disposed. The order controlling design method is used in the part of the switch amount controlling, and the flow chart of systematic procedure and function flow chart of the order are designed. The PID Control algorithm is used in the Analog quantity closed loop control, and the PID order method is introduced. Frequency conversion speed adjusting and the application of and frequency converter are in the chapter four: According to the systematic control request, the electrical machineries of conveyer belt and the roller chain driver are needed to speed regulate, and the importance about the direct current speed regulating being replaced with frequency conversion speed regulating is pointed out. The circuit diagram about frequency conversion speed regulating is designed, and the questions that needing paying attention to while using the frequency converter is introduced.