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Abstract

The traditional mechanical device and the product, many are by the machinery primarily, is electrical, the hydraulic pressure or the pneumatic control mechanical device. Along with the industry level's unceasing development, mechanical device oneself changes the automatic control gradually by the manual operation, the equipment itself also develops into the integration of machinery complex compound. Programmable controller (PLC) is take the microprocessor as a core, the comprehensive computer technology, the automated technology and the communication develop one new industry automatic control device. After more than 30 years development, at present, the programmable controller has become in the industrial automation domain to be most important, to apply most control devices, oneself leaps to the industrial production automation four big props (programmable controller, numerically-controlled machine tool, robot, computer-aided design and manufacture) the first place. Its application's depth and the breadth have become weigh a national industry to be advanced and automaticity height symbol.

This thesis consists of four chapters, from the programmable logic controller (PLC) based planning and design of the entire system, and PLC control system hardware, software development, give full and detailed design ideas. The core of the system is Palletizing automatic production line control system, the control system is mainly based on programmable logic controller (PLC) as the basis for integrated control.

Automatic Palletizing production line is mainly used in chemical, food, food and pharmaceutical industries in the flour, grain, bulk materials (such as plastics, fertilizers, synthetic rubber, food, etc.) of the automatic packaging, ie packaging process weight for bags, bagging, folding, envelope, plastic bags down, batch printing, testing, transfer grouping, stacking, pallets, and stack operations such as disk full automated transmission. With PLC based fully automatic palletizing packaging production line, control system is simple, easy maintenance, strong adaptability, high automation, saving manpower, can greatly increase productivity.

Key word:PLC;Control System;Palletizing automatic production line

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