Design Of Auto-control System For The Plastic-film Packing Machine Of Beer Bottles

The topic’s research object is the machine which is used of packing bear by film ofplastic in Lanzhou yellow river bear company. The machine which is used of packing by filmof plastic has been used too long time, and it’s malfunction is too many (especially electric’smalfunction). The machine can’t meet the requirement of production’s efficiency. For the sakeof decrease the time of the machine break down, raise the production efficiency, reduce thecost of machine’s maintenance, need to rebuild the machine’s control system. As a centraltechnician in the topic, the work as follows:(1) Research the Machine’s craft, work principle and technique parameters.(2) The company’s related technicians, machine operators and I have discussed thetechnical project, and fixed on a perfect technical project.(3) The design of electric blueprint.(4) The design of man and machine’s bridge (HMI).(5) The design of PLC’s program.(6) The whole debug of the machine’s control system.After the rebuilding of the machine’s control system, the failures of the machine aresignificantly reduced, it saves a lot of money for the company, the production’s efficiency hasbeen improved, the practice proved that the rebuilding of the machine’s control system issuccessful. The thesis is the based on the rebuilding of the machine’s control system. Thethesis contains that principles, methods, experience and so on. The thesis’s contents andinnovations are as follows:(1) The introduction part. This part introduced that the research background, thetechnical level of the machine which is used of packing bear by film of plastic, thecomparison of different beer packaging method, and the brief introduction of rebuilding themachine’s control system.(2) The control system’s theory basic of the machine. In this part, it includes that thecontrol’s technology of location’s closed-loop servo control, and programmable controllertechnology.(3) The control of the machine how to divide bottles. The control of the machine how todivide bottles is the key in the entire control system. It includes that Process’s description of divide bottles, describes of driver section of divide bottles, explanation of program and so on.(4) The design of PLC’s program. In this part, it contains that write method of thecontrol program by Siemens’s S7-300PLC, and analysis of critical program and so on.(5) The design of man and machine’s bridge (HMI). It contains that communicationbetween HMI and PLC, the design of HMI’s Interface, simulation and debugging of interfaceand so on.(6) Summary and outlook. In this part, it contains that summing up experience, resultand inadequate of the topic work and outlook of the future.This issue comes from industrial field device’s alteration. The thesis focuses onpracticality. The theory basis, method, experience and what relate to issue are joined to thethesis.